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lvm2/tools/toollib.c
David Teigland 83fe6e720f device usage based on devices file 
The LVM devices file lists devices that lvm can use.  The default
file is /etc/lvm/devices/system.devices, and the lvmdevices(8)
command is used to add or remove device entries.  If the file
does not exist, or if lvm.conf includes use_devicesfile=0, then
lvm will not use a devices file.  When the devices file is in use,
the regex filter is not used, and the filter settings in lvm.conf
or on the command line are ignored.

LVM records devices in the devices file using hardware-specific
IDs, such as the WWID, and attempts to use subsystem-specific
IDs for virtual device types.  These device IDs are also written
in the VG metadata.  When no hardware or virtual ID is available,
lvm falls back using the unstable device name as the device ID.
When devnames are used, lvm performs extra scanning to find
devices if their devname changes, e.g. after reboot.

When proper device IDs are used, an lvm command will not look
at devices outside the devices file, but when devnames are used
as a fallback, lvm will scan devices outside the devices file
to locate PVs on renamed devices.  A config setting
search_for_devnames can be used to control the scanning for
renamed devname entries.

Related to the devices file, the new command option
--devices <devnames> allows a list of devices to be specified for
the command to use, overriding the devices file.  The listed
devices act as a sort of devices file in terms of limiting which
devices lvm will see and use.  Devices that are not listed will
appear to be missing to the lvm command.

Multiple devices files can be kept in /etc/lvm/devices, which
allows lvm to be used with different sets of devices, e.g.
system devices do not need to be exposed to a specific application,
and the application can use lvm on its own set of devices that are
not exposed to the system.  The option --devicesfile <filename> is
used to select the devices file to use with the command.  Without
the option set, the default system devices file is used.

Setting --devicesfile "" causes lvm to not use a devices file.

An existing, empty devices file means lvm will see no devices.

The new command vgimportdevices adds PVs from a VG to the devices
file and updates the VG metadata to include the device IDs.
vgimportdevices -a will import all VGs into the system devices file.

LVM commands run by dmeventd not use a devices file by default,
and will look at all devices on the system.  A devices file can
be created for dmeventd (/etc/lvm/devices/dmeventd.devices)  If
this file exists, lvm commands run by dmeventd will use it.

Internal implementaion:

- device_ids_read - read the devices file
  . add struct dev_use (du) to cmd->use_devices for each devices file entry
- dev_cache_scan - get /dev entries
  . add struct device (dev) to dev_cache for each device on the system
- device_ids_match - match devices file entries to /dev entries
  . match each du on cmd->use_devices to a dev in dev_cache, using device ID
  . on match, set du->dev, dev->id, dev->flags MATCHED_USE_ID
- label_scan - read lvm headers and metadata from devices
  . filters are applied, those that do not need data from the device
  . filter-deviceid skips devs without MATCHED_USE_ID, i.e.
    skips /dev entries that are not listed in the devices file
  . read lvm label from dev
  . filters are applied, those that use data from the device
  . read lvm metadata from dev
  . add info/vginfo structs for PVs/VGs (info is "lvmcache")
- device_ids_find_renamed_devs - handle devices with unstable devname ID
  where devname changed
  . this step only needed when devs do not have proper device IDs,
    and their dev names change, e.g. after reboot sdb becomes sdc.
  . detect incorrect match because PVID in the devices file entry
    does not match the PVID found when the device was read above
  . undo incorrect match between du and dev above
  . search system devices for new location of PVID
  . update devices file with new devnames for PVIDs on renamed devices
  . label_scan the renamed devs
- continue with command processing
2021-02-23 16:43:32 -06:00

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/*
* Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
* Copyright (C) 2004-2017 Red Hat, Inc. All rights reserved.
*
* This file is part of LVM2.
*
* This copyrighted material is made available to anyone wishing to use,
* modify, copy, or redistribute it subject to the terms and conditions
* of the GNU Lesser General Public License v.2.1.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "tools.h"
#include "lib/format_text/format-text.h"
#include "lib/label/hints.h"
#include "lib/device/device_id.h"
#include <sys/stat.h>
#include <signal.h>
#include <sys/wait.h>
#include <sys/utsname.h>
#define report_log_ret_code(ret_code) report_current_object_cmdlog(REPORT_OBJECT_CMDLOG_NAME, \
((ret_code) == ECMD_PROCESSED) ? REPORT_OBJECT_CMDLOG_SUCCESS \
: REPORT_OBJECT_CMDLOG_FAILURE, (ret_code))
const char *command_name(struct cmd_context *cmd)
{
return cmd->command->name;
}
static void _sigchld_handler(int sig __attribute__((unused)))
{
while (wait4(-1, NULL, WNOHANG | WUNTRACED, NULL) > 0) ;
}
/*
* returns:
* -1 if the fork failed
* 0 if the parent
* 1 if the child
*/
int become_daemon(struct cmd_context *cmd, int skip_lvm)
{
static const char devnull[] = "/dev/null";
int null_fd;
pid_t pid;
struct sigaction act = {
{_sigchld_handler},
.sa_flags = SA_NOCLDSTOP,
};
log_verbose("Forking background process from command: %s", cmd->cmd_line);
if (sigaction(SIGCHLD, &act, NULL))
log_warn("WARNING: Failed to set SIGCHLD action.");
if (!skip_lvm)
if (!sync_local_dev_names(cmd)) { /* Flush ops and reset dm cookie */
log_error("Failed to sync local devices before forking.");
return -1;
}
if ((pid = fork()) == -1) {
log_error("fork failed: %s", strerror(errno));
return -1;
}
/* Parent */
if (pid > 0)
return 0;
/* Child */
if (setsid() == -1)
log_error("Background process failed to setsid: %s",
strerror(errno));
/* Set this to avoid discarding output from background process */
// #define DEBUG_CHILD
#ifndef DEBUG_CHILD
if ((null_fd = open(devnull, O_RDWR)) == -1) {
log_sys_error("open", devnull);
_exit(ECMD_FAILED);
}
if ((dup2(null_fd, STDIN_FILENO) < 0) || /* reopen stdin */
(dup2(null_fd, STDOUT_FILENO) < 0) || /* reopen stdout */
(dup2(null_fd, STDERR_FILENO) < 0)) { /* reopen stderr */
log_sys_error("dup2", "redirect");
(void) close(null_fd);
_exit(ECMD_FAILED);
}
if (null_fd > STDERR_FILENO)
(void) close(null_fd);
init_verbose(VERBOSE_BASE_LEVEL);
#endif /* DEBUG_CHILD */
strncpy(*cmd->argv, "(lvm2)", strlen(*cmd->argv));
if (!skip_lvm) {
reset_locking();
lvmcache_destroy(cmd, 1, 1);
if (!lvmcache_init(cmd))
/* FIXME Clean up properly here */
_exit(ECMD_FAILED);
}
return 1;
}
/*
* Strip dev_dir if present
*/
const char *skip_dev_dir(struct cmd_context *cmd, const char *vg_name,
unsigned *dev_dir_found)
{
size_t devdir_len = strlen(cmd->dev_dir);
const char *dmdir = dm_dir() + devdir_len;
size_t dmdir_len = strlen(dmdir), vglv_sz;
char *vgname, *lvname, *layer, *vglv;
/* FIXME Do this properly */
if (*vg_name == '/')
while (vg_name[1] == '/')
vg_name++;
if (strncmp(vg_name, cmd->dev_dir, devdir_len)) {
if (dev_dir_found)
*dev_dir_found = 0;
} else {
if (dev_dir_found)
*dev_dir_found = 1;
vg_name += devdir_len;
while (*vg_name == '/')
vg_name++;
/* Reformat string if /dev/mapper found */
if (!strncmp(vg_name, dmdir, dmdir_len) && vg_name[dmdir_len] == '/') {
vg_name += dmdir_len + 1;
while (*vg_name == '/')
vg_name++;
if (!dm_split_lvm_name(cmd->mem, vg_name, &vgname, &lvname, &layer) ||
*layer) {
log_error("skip_dev_dir: Couldn't split up device name %s.",
vg_name);
return vg_name;
}
vglv_sz = strlen(vgname) + strlen(lvname) + 2;
if (!(vglv = dm_pool_alloc(cmd->mem, vglv_sz)) ||
dm_snprintf(vglv, vglv_sz, "%s%s%s", vgname,
*lvname ? "/" : "",
lvname) < 0) {
log_error("vg/lv string alloc failed.");
return vg_name;
}
return vglv;
}
}
return vg_name;
}
static int _printed_clustered_vg_advice = 0;
/*
* Three possible results:
* a) return 0, skip 0: take the VG, and cmd will end in success
* b) return 0, skip 1: skip the VG, and cmd will end in success
* c) return 1, skip *: skip the VG, and cmd will end in failure
*
* Case b is the special case, and includes the following:
* . The VG is inconsistent, and the command allows for inconsistent VGs.
* . The VG is clustered, the host cannot access clustered VG's,
* and the command option has been used to ignore clustered vgs.
*
* Case c covers the other errors returned when reading the VG.
* If *skip is 1, it's OK for the caller to read the list of PVs in the VG.
*/
static int _ignore_vg(struct cmd_context *cmd,
uint32_t error_flags, struct volume_group *error_vg,
const char *vg_name, struct dm_list *arg_vgnames,
uint32_t read_flags, int *skip, int *notfound)
{
uint32_t read_error = error_flags;
*skip = 0;
*notfound = 0;
if ((read_error & FAILED_NOTFOUND) && (read_flags & READ_OK_NOTFOUND)) {
*notfound = 1;
return 0;
}
if (read_error & FAILED_CLUSTERED) {
if (arg_vgnames && str_list_match_item(arg_vgnames, vg_name)) {
log_error("Cannot access clustered VG %s.", vg_name);
if (!_printed_clustered_vg_advice) {
_printed_clustered_vg_advice = 1;
log_error("See lvmlockd(8) for changing a clvm/clustered VG to a shared VG.");
}
return 1;
} else {
log_warn("Skipping clustered VG %s.", vg_name);
if (!_printed_clustered_vg_advice) {
_printed_clustered_vg_advice = 1;
log_error("See lvmlockd(8) for changing a clvm/clustered VG to a shared VG.");
}
*skip = 1;
return 0;
}
}
if (read_error & FAILED_EXPORTED) {
if (arg_vgnames && str_list_match_item(arg_vgnames, vg_name)) {
log_error("Volume group %s is exported", vg_name);
return 1;
} else {
read_error &= ~FAILED_EXPORTED; /* Check for other errors */
log_verbose("Skipping exported volume group %s", vg_name);
*skip = 1;
}
}
/*
* Commands that operate on "all vgs" shouldn't be bothered by
* skipping a foreign VG, and the command shouldn't fail when
* one is skipped. But, if the command explicitly asked to
* operate on a foreign VG and it's skipped, then the command
* would expect to fail.
*/
if (read_error & FAILED_SYSTEMID) {
if (arg_vgnames && str_list_match_item(arg_vgnames, vg_name)) {
log_error("Cannot access VG %s with system ID %s with %slocal system ID%s%s.",
vg_name,
error_vg ? error_vg->system_id : "unknown ",
cmd->system_id ? "" : "unknown ",
cmd->system_id ? " " : "",
cmd->system_id ? cmd->system_id : "");
return 1;
} else {
read_error &= ~FAILED_SYSTEMID; /* Check for other errors */
log_verbose("Skipping foreign volume group %s", vg_name);
*skip = 1;
}
}
/*
* Accessing a lockd VG when lvmlockd is not used is similar
* to accessing a foreign VG.
* This is also the point where a command fails if it failed
* to acquire the necessary lock from lvmlockd.
* The two cases are distinguished by FAILED_LOCK_TYPE (the
* VG lock_type requires lvmlockd), and FAILED_LOCK_MODE (the
* command failed to acquire the necessary lock.)
*/
if (read_error & (FAILED_LOCK_TYPE | FAILED_LOCK_MODE)) {
if (arg_vgnames && str_list_match_item(arg_vgnames, vg_name)) {
if (read_error & FAILED_LOCK_TYPE)
log_error("Cannot access VG %s with lock type %s that requires lvmlockd.",
vg_name,
error_vg ? error_vg->lock_type : "unknown");
/* For FAILED_LOCK_MODE, the error is printed in vg_read. */
return 1;
} else {
read_error &= ~FAILED_LOCK_TYPE; /* Check for other errors */
read_error &= ~FAILED_LOCK_MODE;
log_verbose("Skipping volume group %s", vg_name);
*skip = 1;
}
}
if (read_error != SUCCESS) {
*skip = 0;
if (is_orphan_vg(vg_name))
log_error("Cannot process standalone physical volumes");
else
log_error("Cannot process volume group %s", vg_name);
return 1;
}
return 0;
}
/*
* This functiona updates the "selected" arg only if last item processed
* is selected so this implements the "whole structure is selected if
* at least one of its items is selected".
*/
static void _update_selection_result(struct processing_handle *handle, int *selected)
{
if (!handle || !handle->selection_handle)
return;
if (handle->selection_handle->selected)
*selected = 1;
}
static void _set_final_selection_result(struct processing_handle *handle, int selected)
{
if (!handle || !handle->selection_handle)
return;
handle->selection_handle->selected = selected;
}
/*
* Metadata iteration functions
*/
int process_each_segment_in_pv(struct cmd_context *cmd,
struct volume_group *vg,
struct physical_volume *pv,
struct processing_handle *handle,
process_single_pvseg_fn_t process_single_pvseg)
{
struct pv_segment *pvseg;
int whole_selected = 0;
int ret_max = ECMD_PROCESSED;
int ret;
struct pv_segment _free_pv_segment = { .pv = pv };
if (dm_list_empty(&pv->segments)) {
ret = process_single_pvseg(cmd, NULL, &_free_pv_segment, handle);
if (ret != ECMD_PROCESSED)
stack;
if (ret > ret_max)
ret_max = ret;
} else {
dm_list_iterate_items(pvseg, &pv->segments) {
if (sigint_caught())
return_ECMD_FAILED;
ret = process_single_pvseg(cmd, vg, pvseg, handle);
_update_selection_result(handle, &whole_selected);
if (ret != ECMD_PROCESSED)
stack;
if (ret > ret_max)
ret_max = ret;
}
}
/* the PV is selected if at least one PV segment is selected */
_set_final_selection_result(handle, whole_selected);
return ret_max;
}
int process_each_segment_in_lv(struct cmd_context *cmd,
struct logical_volume *lv,
struct processing_handle *handle,
process_single_seg_fn_t process_single_seg)
{
struct lv_segment *seg;
int whole_selected = 0;
int ret_max = ECMD_PROCESSED;
int ret;
dm_list_iterate_items(seg, &lv->segments) {
if (sigint_caught())
return_ECMD_FAILED;
ret = process_single_seg(cmd, seg, handle);
_update_selection_result(handle, &whole_selected);
if (ret != ECMD_PROCESSED)
stack;
if (ret > ret_max)
ret_max = ret;
}
/* the LV is selected if at least one LV segment is selected */
_set_final_selection_result(handle, whole_selected);
return ret_max;
}
static const char *_extract_vgname(struct cmd_context *cmd, const char *lv_name,
const char **after)
{
const char *vg_name = lv_name;
char *st, *pos;
/* Strip dev_dir (optional) */
if (!(vg_name = skip_dev_dir(cmd, vg_name, NULL)))
return_0;
/* Require exactly one set of consecutive slashes */
if ((st = pos = strchr(vg_name, '/')))
while (*st == '/')
st++;
if (!st || strchr(st, '/')) {
log_error("\"%s\": Invalid path for Logical Volume.",
lv_name);
return 0;
}
if (!(vg_name = dm_pool_strndup(cmd->mem, vg_name, pos - vg_name))) {
log_error("Allocation of vg_name failed.");
return 0;
}
if (after)
*after = st;
return vg_name;
}
/*
* Extract default volume group name from environment
*/
static const char *_default_vgname(struct cmd_context *cmd)
{
const char *vg_path;
/* Take default VG from environment? */
vg_path = getenv("LVM_VG_NAME");
if (!vg_path)
return 0;
vg_path = skip_dev_dir(cmd, vg_path, NULL);
if (strchr(vg_path, '/')) {
log_error("\"%s\": Invalid environment var LVM_VG_NAME set for Volume Group.",
vg_path);
return 0;
}
return dm_pool_strdup(cmd->mem, vg_path);
}
/*
* Determine volume group name from a logical volume name
*/
const char *extract_vgname(struct cmd_context *cmd, const char *lv_name)
{
const char *vg_name = lv_name;
/* Path supplied? */
if (vg_name && strchr(vg_name, '/')) {
if (!(vg_name = _extract_vgname(cmd, lv_name, NULL)))
return_NULL;
return vg_name;
}
if (!(vg_name = _default_vgname(cmd))) {
if (lv_name)
log_error("Path required for Logical Volume \"%s\".",
lv_name);
return NULL;
}
return vg_name;
}
const char _pe_size_may_not_be_negative_msg[] = "Physical extent size may not be negative.";
int vgcreate_params_set_defaults(struct cmd_context *cmd,
struct vgcreate_params *vp_def,
struct volume_group *vg)
{
int64_t extent_size;
/* Only vgsplit sets vg */
if (vg) {
vp_def->vg_name = NULL;
vp_def->extent_size = vg->extent_size;
vp_def->max_pv = vg->max_pv;
vp_def->max_lv = vg->max_lv;
vp_def->alloc = vg->alloc;
vp_def->vgmetadatacopies = vg->mda_copies;
vp_def->system_id = vg->system_id; /* No need to clone this */
} else {
vp_def->vg_name = NULL;
extent_size = find_config_tree_int64(cmd,
allocation_physical_extent_size_CFG, NULL) * 2;
if (extent_size < 0) {
log_error(_pe_size_may_not_be_negative_msg);
return 0;
}
vp_def->extent_size = (uint32_t) extent_size;
vp_def->max_pv = DEFAULT_MAX_PV;
vp_def->max_lv = DEFAULT_MAX_LV;
vp_def->alloc = DEFAULT_ALLOC_POLICY;
vp_def->vgmetadatacopies = DEFAULT_VGMETADATACOPIES;
vp_def->system_id = cmd->system_id;
}
return 1;
}
/*
* Set members of struct vgcreate_params from cmdline arguments.
* Do preliminary validation with arg_*() interface.
* Further, more generic validation is done in validate_vgcreate_params().
* This function is to remain in tools directory.
*/
int vgcreate_params_set_from_args(struct cmd_context *cmd,
struct vgcreate_params *vp_new,
struct vgcreate_params *vp_def)
{
const char *system_id_arg_str;
const char *lock_type = NULL;
int use_lvmlockd;
lock_type_t lock_type_num;
if (arg_is_set(cmd, clustered_ARG)) {
log_error("The clustered option is deprecated, see --shared.");
return 0;
}
vp_new->vg_name = skip_dev_dir(cmd, vp_def->vg_name, NULL);
vp_new->max_lv = arg_uint_value(cmd, maxlogicalvolumes_ARG,
vp_def->max_lv);
vp_new->max_pv = arg_uint_value(cmd, maxphysicalvolumes_ARG,
vp_def->max_pv);
vp_new->alloc = (alloc_policy_t) arg_uint_value(cmd, alloc_ARG, vp_def->alloc);
/* Units of 512-byte sectors */
vp_new->extent_size =
arg_uint_value(cmd, physicalextentsize_ARG, vp_def->extent_size);
if (arg_sign_value(cmd, physicalextentsize_ARG, SIGN_NONE) == SIGN_MINUS) {
log_error(_pe_size_may_not_be_negative_msg);
return 0;
}
if (arg_uint64_value(cmd, physicalextentsize_ARG, 0) > MAX_EXTENT_SIZE) {
log_error("Physical extent size must be smaller than %s.",
display_size(cmd, (uint64_t) MAX_EXTENT_SIZE));
return 0;
}
if (arg_sign_value(cmd, maxlogicalvolumes_ARG, SIGN_NONE) == SIGN_MINUS) {
log_error("Max Logical Volumes may not be negative.");
return 0;
}
if (arg_sign_value(cmd, maxphysicalvolumes_ARG, SIGN_NONE) == SIGN_MINUS) {
log_error("Max Physical Volumes may not be negative.");
return 0;
}
if (arg_is_set(cmd, vgmetadatacopies_ARG))
vp_new->vgmetadatacopies = arg_int_value(cmd, vgmetadatacopies_ARG,
DEFAULT_VGMETADATACOPIES);
else
vp_new->vgmetadatacopies = find_config_tree_int(cmd, metadata_vgmetadatacopies_CFG, NULL);
if (!(system_id_arg_str = arg_str_value(cmd, systemid_ARG, NULL))) {
vp_new->system_id = vp_def->system_id;
} else {
if (!(vp_new->system_id = system_id_from_string(cmd, system_id_arg_str)))
return_0;
/* FIXME Take local/extra_system_ids into account */
if (vp_new->system_id && cmd->system_id &&
strcmp(vp_new->system_id, cmd->system_id)) {
if (*vp_new->system_id)
log_warn("VG with system ID %s might become inaccessible as local system ID is %s",
vp_new->system_id, cmd->system_id);
else
log_warn("WARNING: A VG without a system ID allows unsafe access from other hosts.");
}
}
if ((system_id_arg_str = arg_str_value(cmd, systemid_ARG, NULL))) {
vp_new->system_id = system_id_from_string(cmd, system_id_arg_str);
} else {
vp_new->system_id = vp_def->system_id;
}
if (system_id_arg_str) {
if (!vp_new->system_id || !vp_new->system_id[0])
log_warn("WARNING: A VG without a system ID allows unsafe access from other hosts.");
if (vp_new->system_id && cmd->system_id &&
strcmp(vp_new->system_id, cmd->system_id)) {
log_warn("VG with system ID %s might become inaccessible as local system ID is %s",
vp_new->system_id, cmd->system_id);
}
}
/*
* Locking: what kind of locking should be used for the
* new VG, and is it compatible with current lvm.conf settings.
*
* The end result is to set vp_new->lock_type to:
* none | clvm | dlm | sanlock.
*
* If 'vgcreate --lock-type <arg>' is set, the answer is given
* directly by <arg> which is one of none|clvm|dlm|sanlock.
*
* 'vgcreate --clustered y' is the way to create clvm VGs.
*
* 'vgcreate --shared' is the way to create lockd VGs.
* lock_type of sanlock or dlm is selected based on
* which lock manager is running.
*
*
* 1. Using neither clvmd nor lvmlockd.
* ------------------------------------------------
* lvm.conf:
* global/use_lvmlockd = 0
* global/locking_type = 1
*
* - no locking is enabled
* - clvmd is not used
* - lvmlockd is not used
* - VGs with CLUSTERED set are ignored (requires clvmd)
* - VGs with lockd type are ignored (requires lvmlockd)
* - vgcreate can create new VGs with lock_type none
* - 'vgcreate --clustered y' fails
* - 'vgcreate --shared' fails
* - 'vgcreate' (neither option) creates a local VG
*
* 2. Using clvmd.
* ------------------------------------------------
* lvm.conf:
* global/use_lvmlockd = 0
* global/locking_type = 3
*
* - locking through clvmd is enabled (traditional clvm config)
* - clvmd is used
* - lvmlockd is not used
* - VGs with CLUSTERED set can be used
* - VGs with lockd type are ignored (requires lvmlockd)
* - vgcreate can create new VGs with CLUSTERED status flag
* - 'vgcreate --clustered y' works
* - 'vgcreate --shared' fails
* - 'vgcreate' (neither option) creates a clvm VG
*
* 3. Using lvmlockd.
* ------------------------------------------------
* lvm.conf:
* global/use_lvmlockd = 1
* global/locking_type = 1
*
* - locking through lvmlockd is enabled
* - clvmd is not used
* - lvmlockd is used
* - VGs with CLUSTERED set are ignored (requires clvmd)
* - VGs with lockd type can be used
* - vgcreate can create new VGs with lock_type sanlock or dlm
* - 'vgcreate --clustered y' fails
* - 'vgcreate --shared' works
* - 'vgcreate' (neither option) creates a local VG
*/
use_lvmlockd = find_config_tree_bool(cmd, global_use_lvmlockd_CFG, NULL);
if (arg_is_set(cmd, locktype_ARG)) {
lock_type = arg_str_value(cmd, locktype_ARG, "");
if (arg_is_set(cmd, shared_ARG) && !is_lockd_type(lock_type)) {
log_error("The --shared option requires lock type sanlock or dlm.");
return 0;
}
} else if (arg_is_set(cmd, shared_ARG)) {
int found_multiple = 0;
if (use_lvmlockd) {
if (!(lock_type = lockd_running_lock_type(cmd, &found_multiple))) {
if (found_multiple)
log_error("Found multiple lock managers, select one with --lock-type.");
else
log_error("Failed to detect a running lock manager to select lock type.");
return 0;
}
} else {
log_error("Using a shared lock type requires lvmlockd.");
return 0;
}
} else {
lock_type = "none";
}
/*
* Check that the lock_type is recognized, and is being
* used with the correct lvm.conf settings.
*/
lock_type_num = get_lock_type_from_string(lock_type);
switch (lock_type_num) {
case LOCK_TYPE_INVALID:
case LOCK_TYPE_CLVM:
log_error("lock_type %s is invalid", lock_type);
return 0;
case LOCK_TYPE_SANLOCK:
case LOCK_TYPE_DLM:
if (!use_lvmlockd) {
log_error("Using a shared lock type requires lvmlockd.");
return 0;
}
break;
case LOCK_TYPE_NONE:
break;
};
/*
* The vg is not owned by one host/system_id.
* Locking coordinates access from multiple hosts.
*/
if (lock_type_num == LOCK_TYPE_DLM || lock_type_num == LOCK_TYPE_SANLOCK)
vp_new->system_id = NULL;
vp_new->lock_type = lock_type;
log_debug("Setting lock_type to %s", vp_new->lock_type);
return 1;
}
/* Shared code for changing activation state for vgchange/lvchange */
int lv_change_activate(struct cmd_context *cmd, struct logical_volume *lv,
activation_change_t activate)
{
int r = 1;
int integrity_recalculate;
struct logical_volume *snapshot_lv;
if (lv_is_cache_pool(lv)) {
if (is_change_activating(activate)) {
log_verbose("Skipping activation of cache pool %s.",
display_lvname(lv));
return 1;
}
if (!dm_list_empty(&lv->segs_using_this_lv)) {
log_verbose("Skipping deactivation of used cache pool %s.",
display_lvname(lv));
return 1;
}
/*
* Allow to pass only deactivation of unused cache pool.
* Useful only for recovery of failed zeroing of metadata LV.
*/
}
if (lv_is_merging_origin(lv)) {
/*
* For merging origin, its snapshot must be inactive.
* If it's still active and cannot be deactivated
* activation or deactivation of origin fails!
*
* When origin is deactivated and merging snapshot is thin
* it allows to deactivate origin, but still report error,
* since the thin snapshot remains active.
*
* User could retry to deactivate it with another
* deactivation of origin, which is the only visible LV
*/
snapshot_lv = find_snapshot(lv)->lv;
if (lv_is_thin_type(snapshot_lv) && !deactivate_lv(cmd, snapshot_lv)) {
if (is_change_activating(activate)) {
log_error("Refusing to activate merging volume %s while "
"snapshot volume %s is still active.",
display_lvname(lv), display_lvname(snapshot_lv));
return 0;
}
log_error("Cannot fully deactivate merging origin volume %s while "
"snapshot volume %s is still active.",
display_lvname(lv), display_lvname(snapshot_lv));
r = 0; /* and continue to deactivate origin... */
}
}
if (is_change_activating(activate) &&
lvmcache_has_duplicate_devs() &&
vg_has_duplicate_pvs(lv->vg) &&
!find_config_tree_bool(cmd, devices_allow_changes_with_duplicate_pvs_CFG, NULL)) {
log_error("Cannot activate LVs in VG %s while PVs appear on duplicate devices.",
lv->vg->name);
return 0;
}
if ((integrity_recalculate = lv_has_integrity_recalculate_metadata(lv))) {
/* Don't want pvscan to write VG while running from systemd service. */
if (!strcmp(cmd->name, "pvscan")) {
log_error("Cannot activate uninitialized integrity LV %s from pvscan.",
display_lvname(lv));
return 0;
}
if (vg_is_shared(lv->vg)) {
uint32_t lockd_state = 0;
if (!lockd_vg(cmd, lv->vg->name, "ex", 0, &lockd_state)) {
log_error("Cannot activate uninitialized integrity LV %s without lock.",
display_lvname(lv));
return 0;
}
}
}
if (!lv_active_change(cmd, lv, activate))
return_0;
/* Write VG metadata to clear the integrity recalculate flag. */
if (integrity_recalculate && lv_is_active(lv)) {
log_print_unless_silent("Updating VG to complete initialization of integrity LV %s.",
display_lvname(lv));
lv_clear_integrity_recalculate_metadata(lv);
}
set_lv_notify(lv->vg->cmd);
return r;
}
int lv_refresh(struct cmd_context *cmd, struct logical_volume *lv)
{
struct logical_volume *snapshot_lv;
if (lv_is_merging_origin(lv)) {
snapshot_lv = find_snapshot(lv)->lv;
if (lv_is_thin_type(snapshot_lv) && !deactivate_lv(cmd, snapshot_lv))
log_print_unless_silent("Delaying merge for origin volume %s since "
"snapshot volume %s is still active.",
display_lvname(lv), display_lvname(snapshot_lv));
}
if (!lv_refresh_suspend_resume(lv))
return_0;
/*
* check if snapshot merge should be polled
* - unfortunately: even though the dev_manager will clear
* the lv's merge attributes if a merge is not possible;
* it is clearing a different instance of the lv (as
* retrieved with lv_from_lvid)
* - fortunately: polldaemon will immediately shutdown if the
* origin doesn't have a status with a snapshot percentage
*/
if (background_polling() && lv_is_merging_origin(lv) && lv_is_active(lv))
lv_spawn_background_polling(cmd, lv);
return 1;
}
int vg_refresh_visible(struct cmd_context *cmd, struct volume_group *vg)
{
struct lv_list *lvl;
int r = 1;
sigint_allow();
dm_list_iterate_items(lvl, &vg->lvs) {
if (sigint_caught()) {
r = 0;
stack;
break;
}
if (lv_is_visible(lvl->lv) && !lv_refresh(cmd, lvl->lv)) {
r = 0;
stack;
}
}
sigint_restore();
return r;
}
void lv_spawn_background_polling(struct cmd_context *cmd,
struct logical_volume *lv)
{
const char *pvname;
const struct logical_volume *lv_mirr = NULL;
if (lv_is_pvmove(lv))
lv_mirr = lv;
else if (lv_is_locked(lv))
lv_mirr = find_pvmove_lv_in_lv(lv);
if (lv_mirr &&
(pvname = get_pvmove_pvname_from_lv_mirr(lv_mirr))) {
log_verbose("Spawning background pvmove process for %s.",
pvname);
pvmove_poll(cmd, pvname, lv_mirr->lvid.s, lv_mirr->vg->name, lv_mirr->name, 1);
}
if (lv_is_converting(lv) || lv_is_merging(lv)) {
log_verbose("Spawning background lvconvert process for %s.",
lv->name);
lvconvert_poll(cmd, lv, 1);
}
}
int get_activation_monitoring_mode(struct cmd_context *cmd,
int *monitoring_mode)
{
*monitoring_mode = DEFAULT_DMEVENTD_MONITOR;
if (arg_is_set(cmd, monitor_ARG) &&
(arg_is_set(cmd, ignoremonitoring_ARG) ||
arg_is_set(cmd, sysinit_ARG))) {
log_error("--ignoremonitoring or --sysinit option not allowed with --monitor option.");
return 0;
}
if (arg_is_set(cmd, monitor_ARG))
*monitoring_mode = arg_int_value(cmd, monitor_ARG,
DEFAULT_DMEVENTD_MONITOR);
else if (is_static() || arg_is_set(cmd, ignoremonitoring_ARG) ||
arg_is_set(cmd, sysinit_ARG) ||
!find_config_tree_bool(cmd, activation_monitoring_CFG, NULL))
*monitoring_mode = DMEVENTD_MONITOR_IGNORE;
return 1;
}
/*
* Read pool options from cmdline
*/
int get_pool_params(struct cmd_context *cmd,
const struct segment_type *segtype,
uint64_t *pool_metadata_size,
int *pool_metadata_spare,
uint32_t *chunk_size,
thin_discards_t *discards,
thin_zero_t *zero_new_blocks)
{
if (segtype_is_thin_pool(segtype) || segtype_is_thin(segtype)) {
if (arg_is_set(cmd, zero_ARG)) {
*zero_new_blocks = arg_int_value(cmd, zero_ARG, 0) ? THIN_ZERO_YES : THIN_ZERO_NO;
log_very_verbose("%s pool zeroing.",
(*zero_new_blocks == THIN_ZERO_YES) ? "Enabling" : "Disabling");
} else
*zero_new_blocks = THIN_ZERO_UNSELECTED;
if (arg_is_set(cmd, discards_ARG)) {
*discards = (thin_discards_t) arg_uint_value(cmd, discards_ARG, 0);
log_very_verbose("Setting pool discards to %s.",
get_pool_discards_name(*discards));
} else
*discards = THIN_DISCARDS_UNSELECTED;
}
if (arg_from_list_is_negative(cmd, "may not be negative",
chunksize_ARG,
pooldatasize_ARG,
poolmetadatasize_ARG,
-1))
return_0;
if (arg_from_list_is_zero(cmd, "may not be zero",
chunksize_ARG,
pooldatasize_ARG,
poolmetadatasize_ARG,
-1))
return_0;
if (arg_is_set(cmd, chunksize_ARG)) {
*chunk_size = arg_uint_value(cmd, chunksize_ARG, 0);
if (!validate_pool_chunk_size(cmd, segtype, *chunk_size))
return_0;
log_very_verbose("Setting pool chunk size to %s.",
display_size(cmd, *chunk_size));
} else
*chunk_size = 0;
if (arg_is_set(cmd, poolmetadatasize_ARG)) {
if (arg_is_set(cmd, poolmetadata_ARG)) {
log_error("Please specify either metadata logical volume or its size.");
return 0;
}
*pool_metadata_size = arg_uint64_value(cmd, poolmetadatasize_ARG,
UINT64_C(0));
} else
*pool_metadata_size = 0;
/* TODO: default in lvm.conf and metadata profile ? */
*pool_metadata_spare = arg_int_value(cmd, poolmetadataspare_ARG,
DEFAULT_POOL_METADATA_SPARE);
return 1;
}
/*
* Generic stripe parameter checks.
*/
static int _validate_stripe_params(struct cmd_context *cmd, const struct segment_type *segtype,
uint32_t *stripes, uint32_t *stripe_size)
{
if (*stripes < 1 || *stripes > MAX_STRIPES) {
log_error("Number of stripes (%d) must be between %d and %d.",
*stripes, 1, MAX_STRIPES);
return 0;
}
if (!segtype_supports_stripe_size(segtype)) {
if (*stripe_size) {
log_print_unless_silent("Ignoring stripesize argument for %s devices.",
segtype->name);
*stripe_size = 0;
}
} else if (*stripes == 1) {
if (*stripe_size) {
log_print_unless_silent("Ignoring stripesize argument with single stripe.");
*stripe_size = 0;
}
} else {
if (!*stripe_size) {
*stripe_size = find_config_tree_int(cmd, metadata_stripesize_CFG, NULL) * 2;
log_print_unless_silent("Using default stripesize %s.",
display_size(cmd, (uint64_t) *stripe_size));
}
if (*stripe_size > STRIPE_SIZE_LIMIT * 2) {
log_error("Stripe size cannot be larger than %s.",
display_size(cmd, (uint64_t) STRIPE_SIZE_LIMIT));
return 0;
} else if (*stripe_size < STRIPE_SIZE_MIN || !is_power_of_2(*stripe_size)) {
log_error("Invalid stripe size %s.",
display_size(cmd, (uint64_t) *stripe_size));
return 0;
}
}
return 1;
}
/*
* The stripe size is limited by the size of a uint32_t, but since the
* value given by the user is doubled, and the final result must be a
* power of 2, we must divide UINT_MAX by four and add 1 (to round it
* up to the power of 2)
*/
int get_stripe_params(struct cmd_context *cmd, const struct segment_type *segtype,
uint32_t *stripes, uint32_t *stripe_size,
unsigned *stripes_supplied, unsigned *stripe_size_supplied)
{
/* stripes_long_ARG takes precedence (for lvconvert) */
/* FIXME Cope with relative +/- changes for lvconvert. */
if (arg_is_set(cmd, stripes_long_ARG)) {
*stripes = arg_uint_value(cmd, stripes_long_ARG, 0);
*stripes_supplied = 1;
} else if (arg_is_set(cmd, stripes_ARG)) {
*stripes = arg_uint_value(cmd, stripes_ARG, 0);
*stripes_supplied = 1;
} else {
/*
* FIXME add segtype parameter for min_stripes and remove logic for this
* from all other places
*/
if (segtype_is_any_raid6(segtype))
*stripes = 3;
else if (segtype_is_striped_raid(segtype))
*stripes = 2;
else
*stripes = 1;
*stripes_supplied = 0;
}
if ((*stripe_size = arg_uint_value(cmd, stripesize_ARG, 0))) {
if (arg_sign_value(cmd, stripesize_ARG, SIGN_NONE) == SIGN_MINUS) {
log_error("Negative stripesize is invalid.");
return 0;
}
}
*stripe_size_supplied = arg_is_set(cmd, stripesize_ARG);
return _validate_stripe_params(cmd, segtype, stripes, stripe_size);
}
static int _validate_cachepool_params(const char *policy_name, cache_mode_t cache_mode)
{
/*
* FIXME: it might be nice if cmd def rules could check option values,
* then a rule could do this.
*/
if ((cache_mode == CACHE_MODE_WRITEBACK) && policy_name && !strcmp(policy_name, "cleaner")) {
log_error("Cache mode \"writeback\" is not compatible with cache policy \"cleaner\".");
return 0;
}
return 1;
}
int get_cache_params(struct cmd_context *cmd,
uint32_t *chunk_size,
cache_metadata_format_t *cache_metadata_format,
cache_mode_t *cache_mode,
const char **name,
struct dm_config_tree **settings)
{
const char *str;
struct arg_value_group_list *group;
struct dm_config_tree *result = NULL, *prev = NULL, *current = NULL;
struct dm_config_node *cn;
int ok = 0;
if (arg_is_set(cmd, chunksize_ARG)) {
*chunk_size = arg_uint_value(cmd, chunksize_ARG, 0);
if (!validate_cache_chunk_size(cmd, *chunk_size))
return_0;
log_very_verbose("Setting pool chunk size to %s.",
display_size(cmd, *chunk_size));
}
*cache_metadata_format = (cache_metadata_format_t)
arg_uint_value(cmd, cachemetadataformat_ARG, CACHE_METADATA_FORMAT_UNSELECTED);
*cache_mode = (cache_mode_t) arg_uint_value(cmd, cachemode_ARG, CACHE_MODE_UNSELECTED);
*name = arg_str_value(cmd, cachepolicy_ARG, NULL);
if (!_validate_cachepool_params(*name, *cache_mode))
goto_out;
dm_list_iterate_items(group, &cmd->arg_value_groups) {
if (!grouped_arg_is_set(group->arg_values, cachesettings_ARG))
continue;
if (!(current = dm_config_create()))
goto_out;
if (prev)
current->cascade = prev;
prev = current;
if (!(str = grouped_arg_str_value(group->arg_values,
cachesettings_ARG,
NULL)))
goto_out;
if (!dm_config_parse_without_dup_node_check(current, str, str + strlen(str)))
goto_out;
}
if (current) {
if (!(result = dm_config_flatten(current)))
goto_out;
if (result->root) {
if (!(cn = dm_config_create_node(result, "policy_settings")))
goto_out;
cn->child = result->root;
result->root = cn;
}
}
ok = 1;
out:
if (!ok && result) {
dm_config_destroy(result);
result = NULL;
}
while (prev) {
current = prev->cascade;
dm_config_destroy(prev);
prev = current;
}
*settings = result;
return ok;
}
static int _get_one_writecache_setting(struct cmd_context *cmd, struct writecache_settings *settings,
char *key, char *val, uint32_t *block_size_sectors)
{
/* special case: block_size is not a setting but is set with the --cachesettings option */
if (!strncmp(key, "block_size", strlen("block_size"))) {
uint32_t block_size = 0;
if (sscanf(val, "%u", &block_size) != 1)
goto_bad;
if (block_size == 512)
*block_size_sectors = 1;
else if (block_size == 4096)
*block_size_sectors = 8;
else
goto_bad;
return 1;
}
if (!strncmp(key, "high_watermark", strlen("high_watermark"))) {
if (sscanf(val, "%llu", (unsigned long long *)&settings->high_watermark) != 1)
goto_bad;
if (settings->high_watermark > 100)
goto_bad;
settings->high_watermark_set = 1;
return 1;
}
if (!strncmp(key, "low_watermark", strlen("low_watermark"))) {
if (sscanf(val, "%llu", (unsigned long long *)&settings->low_watermark) != 1)
goto_bad;
if (settings->low_watermark > 100)
goto_bad;
settings->low_watermark_set = 1;
return 1;
}
if (!strncmp(key, "writeback_jobs", strlen("writeback_jobs"))) {
if (sscanf(val, "%llu", (unsigned long long *)&settings->writeback_jobs) != 1)
goto_bad;
settings->writeback_jobs_set = 1;
return 1;
}
if (!strncmp(key, "autocommit_blocks", strlen("autocommit_blocks"))) {
if (sscanf(val, "%llu", (unsigned long long *)&settings->autocommit_blocks) != 1)
goto_bad;
settings->autocommit_blocks_set = 1;
return 1;
}
if (!strncmp(key, "autocommit_time", strlen("autocommit_time"))) {
if (sscanf(val, "%llu", (unsigned long long *)&settings->autocommit_time) != 1)
goto_bad;
settings->autocommit_time_set = 1;
return 1;
}
if (!strncmp(key, "fua", strlen("fua"))) {
if (settings->nofua_set) {
log_error("Setting fua and nofua cannot both be set.");
return 0;
}
if (sscanf(val, "%u", &settings->fua) != 1)
goto_bad;
settings->fua_set = 1;
return 1;
}
if (!strncmp(key, "nofua", strlen("nofua"))) {
if (settings->fua_set) {
log_error("Setting fua and nofua cannot both be set.");
return 0;
}
if (sscanf(val, "%u", &settings->nofua) != 1)
goto_bad;
settings->nofua_set = 1;
return 1;
}
if (!strncmp(key, "cleaner", strlen("cleaner"))) {
if (sscanf(val, "%u", &settings->cleaner) != 1)
goto_bad;
settings->cleaner_set = 1;
return 1;
}
if (!strncmp(key, "max_age", strlen("max_age"))) {
if (sscanf(val, "%u", &settings->max_age) != 1)
goto_bad;
settings->max_age_set = 1;
return 1;
}
if (settings->new_key) {
log_error("Setting %s is not recognized. Only one unrecognized setting is allowed.", key);
return 0;
}
log_warn("Unrecognized writecache setting \"%s\" may cause activation failure.", key);
if (yes_no_prompt("Use unrecognized writecache setting? [y/n]: ") == 'n') {
log_error("Aborting writecache conversion.");
return 0;
}
log_warn("Using unrecognized writecache setting: %s = %s.", key, val);
settings->new_key = dm_pool_strdup(cmd->mem, key);
settings->new_val = dm_pool_strdup(cmd->mem, val);
return 1;
bad:
log_error("Invalid setting: %s", key);
return 0;
}
int get_writecache_settings(struct cmd_context *cmd, struct writecache_settings *settings,
uint32_t *block_size_sectors)
{
struct arg_value_group_list *group;
const char *str;
char key[64];
char val[64];
int num;
int pos;
/*
* "grouped" means that multiple --cachesettings options can be used.
* Each option is also allowed to contain multiple key = val pairs.
*/
dm_list_iterate_items(group, &cmd->arg_value_groups) {
if (!grouped_arg_is_set(group->arg_values, cachesettings_ARG))
continue;
if (!(str = grouped_arg_str_value(group->arg_values, cachesettings_ARG, NULL)))
break;
pos = 0;
while (pos < strlen(str)) {
/* scan for "key1=val1 key2 = val2 key3= val3" */
memset(key, 0, sizeof(key));
memset(val, 0, sizeof(val));
if (sscanf(str + pos, " %63[^=]=%63s %n", key, val, &num) != 2) {
log_error("Invalid setting at: %s", str+pos);
return 0;
}
pos += num;
if (!_get_one_writecache_setting(cmd, settings, key, val, block_size_sectors))
return_0;
}
}
if (settings->high_watermark_set && settings->low_watermark_set &&
(settings->high_watermark <= settings->low_watermark)) {
log_error("High watermark must be greater than low watermark.");
return 0;
}
return 1;
}
/* FIXME move to lib */
static int _pv_change_tag(struct physical_volume *pv, const char *tag, int addtag)
{
if (addtag) {
if (!str_list_add(pv->fmt->cmd->mem, &pv->tags, tag)) {
log_error("Failed to add tag %s to physical volume %s.",
tag, pv_dev_name(pv));
return 0;
}
} else
str_list_del(&pv->tags, tag);
return 1;
}
/* Set exactly one of VG, LV or PV */
int change_tag(struct cmd_context *cmd, struct volume_group *vg,
struct logical_volume *lv, struct physical_volume *pv, int arg)
{
const char *tag;
struct arg_value_group_list *current_group;
dm_list_iterate_items(current_group, &cmd->arg_value_groups) {
if (!grouped_arg_is_set(current_group->arg_values, arg))
continue;
if (!(tag = grouped_arg_str_value(current_group->arg_values, arg, NULL))) {
log_error("Failed to get tag.");
return 0;
}
if (vg && !vg_change_tag(vg, tag, arg == addtag_ARG))
return_0;
else if (lv && !lv_change_tag(lv, tag, arg == addtag_ARG))
return_0;
else if (pv && !_pv_change_tag(pv, tag, arg == addtag_ARG))
return_0;
}
return 1;
}
/*
* FIXME: replace process_each_label() with process_each_vg() which is
* based on performing vg_read(), which provides a correct representation
* of VGs/PVs, that is not provided by lvmcache_label_scan().
*/
int process_each_label(struct cmd_context *cmd, int argc, char **argv,
struct processing_handle *handle,
process_single_label_fn_t process_single_label)
{
log_report_t saved_log_report_state = log_get_report_state();
struct label *label;
struct dev_iter *iter;
struct device *dev;
struct lvmcache_info *info;
struct dm_list process_duplicates;
struct device_list *devl;
int ret_max = ECMD_PROCESSED;
int ret;
int opt = 0;
dm_list_init(&process_duplicates);
log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_LABEL);
lvmcache_label_scan(cmd);
if (argc) {
for (; opt < argc; opt++) {
if (!(dev = dev_cache_get(cmd, argv[opt], cmd->filter))) {
log_error("Failed to find device "
"\"%s\".", argv[opt]);
ret_max = ECMD_FAILED;
continue;
}
if (!(label = lvmcache_get_dev_label(dev))) {
if (!lvmcache_dev_is_unused_duplicate(dev)) {
log_error("No physical volume label read from %s.", argv[opt]);
ret_max = ECMD_FAILED;
} else {
if (!(devl = malloc(sizeof(*devl))))
return_0;
devl->dev = dev;
dm_list_add(&process_duplicates, &devl->list);
}
continue;
}
log_set_report_object_name_and_id(dev_name(dev), NULL);
ret = process_single_label(cmd, label, handle);
report_log_ret_code(ret);
if (ret > ret_max)
ret_max = ret;
log_set_report_object_name_and_id(NULL, NULL);
if (sigint_caught())
break;
}
dm_list_iterate_items(devl, &process_duplicates) {
/*
* remove the existing dev for this pvid from lvmcache
* so that the duplicate dev can replace it.
*/
if ((info = lvmcache_info_from_pvid(devl->dev->pvid, NULL, 0)))
lvmcache_del(info);
/*
* add info to lvmcache from the duplicate dev.
*/
label_scan_dev(devl->dev);
/*
* the info/label should now be found because
* the label_read should have added it.
*/
if (!(label = lvmcache_get_dev_label(devl->dev)))
continue;
log_set_report_object_name_and_id(dev_name(devl->dev), NULL);
ret = process_single_label(cmd, label, handle);
report_log_ret_code(ret);
if (ret > ret_max)
ret_max = ret;
log_set_report_object_name_and_id(NULL, NULL);
if (sigint_caught())
break;
}
goto out;
}
if (!(iter = dev_iter_create(cmd->filter, 1))) {
log_error("dev_iter creation failed.");
ret_max = ECMD_FAILED;
goto out;
}
while ((dev = dev_iter_get(cmd, iter)))
{
if (!(label = lvmcache_get_dev_label(dev)))
continue;
log_set_report_object_name_and_id(dev_name(label->dev), NULL);
ret = process_single_label(cmd, label, handle);
report_log_ret_code(ret);
if (ret > ret_max)
ret_max = ret;
log_set_report_object_name_and_id(NULL, NULL);
if (sigint_caught())
break;
}
dev_iter_destroy(iter);
out:
log_restore_report_state(saved_log_report_state);
return ret_max;
}
/*
* Parse persistent major minor parameters.
*
* --persistent is unspecified => state is deduced
* from presence of options --minor or --major.
*
* -Mn => --minor or --major not allowed.
*
* -My => --minor is required (and also --major on <=2.4)
*/
int get_and_validate_major_minor(const struct cmd_context *cmd,
const struct format_type *fmt,
int32_t *major, int32_t *minor)
{
if (arg_count(cmd, minor_ARG) > 1) {
log_error("Option --minor may not be repeated.");
return 0;
}
if (arg_count(cmd, major_ARG) > 1) {
log_error("Option -j|--major may not be repeated.");
return 0;
}
/* Check with default 'y' */
if (!arg_int_value(cmd, persistent_ARG, 1)) { /* -Mn */
if (arg_is_set(cmd, minor_ARG) || arg_is_set(cmd, major_ARG)) {
log_error("Options --major and --minor are incompatible with -Mn.");
return 0;
}
*major = *minor = -1;
return 1;
}
/* -1 cannot be entered as an argument for --major, --minor */
*major = arg_int_value(cmd, major_ARG, -1);
*minor = arg_int_value(cmd, minor_ARG, -1);
if (arg_is_set(cmd, persistent_ARG)) { /* -My */
if (*minor == -1) {
log_error("Please specify minor number with --minor when using -My.");
return 0;
}
}
if (!strncmp(cmd->kernel_vsn, "2.4.", 4)) {
/* Major is required for 2.4 */
if (arg_is_set(cmd, persistent_ARG) && *major < 0) {
log_error("Please specify major number with --major when using -My.");
return 0;
}
} else {
if (*major != -1) {
log_warn("WARNING: Ignoring supplied major number %d - "
"kernel assigns major numbers dynamically. "
"Using major number %d instead.",
*major, cmd->dev_types->device_mapper_major);
}
/* Stay with dynamic major:minor if minor is not specified. */
*major = (*minor == -1) ? -1 : cmd->dev_types->device_mapper_major;
}
if ((*minor != -1) && !validate_major_minor(cmd, fmt, *major, *minor))
return_0;
return 1;
}
/*
* Validate lvname parameter
*
* If it contains vgname, it is extracted from lvname.
* If there is passed vgname, it is compared whether its the same name.
*/
int validate_lvname_param(struct cmd_context *cmd, const char **vg_name,
const char **lv_name)
{
const char *vgname;
const char *lvname;
if (!lv_name || !*lv_name)
return 1; /* NULL lvname is ok */
/* If contains VG name, extract it. */
if (strchr(*lv_name, (int) '/')) {
if (!(vgname = _extract_vgname(cmd, *lv_name, &lvname)))
return_0;
if (!*vg_name)
*vg_name = vgname;
else if (strcmp(vgname, *vg_name)) {
log_error("Please use a single volume group name "
"(\"%s\" or \"%s\").", vgname, *vg_name);
return 0;
}
*lv_name = lvname;
}
if (!validate_name(*lv_name)) {
log_error("Logical volume name \"%s\" is invalid.",
*lv_name);
return 0;
}
return 1;
}
/*
* Validate lvname parameter
* This name must follow restriction rules on prefixes and suffixes.
*
* If it contains vgname, it is extracted from lvname.
* If there is passed vgname, it is compared whether its the same name.
*/
int validate_restricted_lvname_param(struct cmd_context *cmd, const char **vg_name,
const char **lv_name)
{
if (!validate_lvname_param(cmd, vg_name, lv_name))
return_0;
if (lv_name && *lv_name && !apply_lvname_restrictions(*lv_name))
return_0;
return 1;
}
/*
* Extract list of VG names and list of tags from command line arguments.
*/
static int _get_arg_vgnames(struct cmd_context *cmd,
int argc, char **argv,
const char *one_vgname,
struct dm_list *use_vgnames,
struct dm_list *arg_vgnames,
struct dm_list *arg_tags)
{
int opt = 0;
int ret_max = ECMD_PROCESSED;
const char *vg_name;
if (one_vgname) {
if (!str_list_add(cmd->mem, arg_vgnames,
dm_pool_strdup(cmd->mem, one_vgname))) {
log_error("strlist allocation failed.");
return ECMD_FAILED;
}
return ret_max;
}
if (use_vgnames && !dm_list_empty(use_vgnames)) {
dm_list_splice(arg_vgnames, use_vgnames);
return ret_max;
}
for (; opt < argc; opt++) {
vg_name = argv[opt];
if (*vg_name == '@') {
if (!validate_tag(vg_name + 1)) {
log_error("Skipping invalid tag: %s", vg_name);
if (ret_max < EINVALID_CMD_LINE)
ret_max = EINVALID_CMD_LINE;
continue;
}
if (!str_list_add(cmd->mem, arg_tags,
dm_pool_strdup(cmd->mem, vg_name + 1))) {
log_error("strlist allocation failed.");
return ECMD_FAILED;
}
continue;
}
vg_name = skip_dev_dir(cmd, vg_name, NULL);
if (strchr(vg_name, '/')) {
log_error("Invalid volume group name %s.", vg_name);
if (ret_max < EINVALID_CMD_LINE)
ret_max = EINVALID_CMD_LINE;
continue;
}
if (!str_list_add(cmd->mem, arg_vgnames,
dm_pool_strdup(cmd->mem, vg_name))) {
log_error("strlist allocation failed.");
return ECMD_FAILED;
}
}
return ret_max;
}
struct processing_handle *init_processing_handle(struct cmd_context *cmd, struct processing_handle *parent_handle)
{
struct processing_handle *handle;
if (!(handle = dm_pool_zalloc(cmd->mem, sizeof(struct processing_handle)))) {
log_error("_init_processing_handle: failed to allocate memory for processing handle");
return NULL;
}
handle->parent = parent_handle;
/*
* For any reporting tool, the internal_report_for_select is reset to 0
* automatically because the internal reporting/selection is simply not
* needed - the reporting/selection is already a part of the code path
* used there.
*
* *The internal report for select is only needed for non-reporting tools!*
*/
handle->internal_report_for_select = arg_is_set(cmd, select_ARG);
handle->include_historical_lvs = cmd->include_historical_lvs;
if (!parent_handle && !cmd->cmd_report.report_group) {
if (!report_format_init(cmd)) {
dm_pool_free(cmd->mem, handle);
return NULL;
}
} else
cmd->cmd_report.saved_log_report_state = log_get_report_state();
log_set_report_context(LOG_REPORT_CONTEXT_PROCESSING);
return handle;
}
int init_selection_handle(struct cmd_context *cmd, struct processing_handle *handle,
report_type_t initial_report_type)
{
struct selection_handle *sh;
const char *selection;
if (!(sh = dm_pool_zalloc(cmd->mem, sizeof(struct selection_handle)))) {
log_error("_init_selection_handle: failed to allocate memory for selection handle");
return 0;
}
if (!report_get_single_selection(cmd, initial_report_type, &selection))
return_0;
sh->report_type = initial_report_type;
if (!(sh->selection_rh = report_init_for_selection(cmd, &sh->report_type, selection))) {
dm_pool_free(cmd->mem, sh);
return_0;
}
handle->selection_handle = sh;
return 1;
}
void destroy_processing_handle(struct cmd_context *cmd, struct processing_handle *handle)
{
if (handle) {
if (handle->selection_handle && handle->selection_handle->selection_rh)
dm_report_free(handle->selection_handle->selection_rh);
log_restore_report_state(cmd->cmd_report.saved_log_report_state);
if (!cmd->is_interactive) {
if (!dm_report_group_destroy(cmd->cmd_report.report_group))
stack;
cmd->cmd_report.report_group = NULL;
if (cmd->cmd_report.log_rh) {
dm_report_free(cmd->cmd_report.log_rh);
cmd->cmd_report.log_rh = NULL;
}
}
/*
* TODO: think about better alternatives:
* handle mempool, dm_alloc for handle memory...
*/
memset(handle, 0, sizeof(*handle));
}
}
int select_match_vg(struct cmd_context *cmd, struct processing_handle *handle,
struct volume_group *vg)
{
int r;
if (!handle->internal_report_for_select)
return 1;
handle->selection_handle->orig_report_type = VGS;
if (!(r = report_for_selection(cmd, handle, NULL, vg, NULL)))
log_error("Selection failed for VG %s.", vg->name);
handle->selection_handle->orig_report_type = 0;
return r;
}
int select_match_lv(struct cmd_context *cmd, struct processing_handle *handle,
struct volume_group *vg, struct logical_volume *lv)
{
int r;
if (!handle->internal_report_for_select)
return 1;
handle->selection_handle->orig_report_type = LVS;
if (!(r = report_for_selection(cmd, handle, NULL, vg, lv)))
log_error("Selection failed for LV %s.", lv->name);
handle->selection_handle->orig_report_type = 0;
return r;
}
int select_match_pv(struct cmd_context *cmd, struct processing_handle *handle,
struct volume_group *vg, struct physical_volume *pv)
{
int r;
if (!handle->internal_report_for_select)
return 1;
handle->selection_handle->orig_report_type = PVS;
if (!(r = report_for_selection(cmd, handle, pv, vg, NULL)))
log_error("Selection failed for PV %s.", dev_name(pv->dev));
handle->selection_handle->orig_report_type = 0;
return r;
}
static int _select_matches(struct processing_handle *handle)
{
if (!handle->internal_report_for_select)
return 1;
return handle->selection_handle->selected;
}
static int _process_vgnameid_list(struct cmd_context *cmd, uint32_t read_flags,
struct dm_list *vgnameids_to_process,
struct dm_list *arg_vgnames,
struct dm_list *arg_tags,
struct processing_handle *handle,
process_single_vg_fn_t process_single_vg)
{
log_report_t saved_log_report_state = log_get_report_state();
char uuid[64] __attribute__((aligned(8)));
struct volume_group *vg;
struct volume_group *error_vg = NULL;
struct vgnameid_list *vgnl;
const char *vg_name;
const char *vg_uuid;
uint32_t lockd_state = 0;
uint32_t error_flags = 0;
int whole_selected = 0;
int ret_max = ECMD_PROCESSED;
int ret;
int skip;
int notfound;
int process_all = 0;
int do_report_ret_code = 1;
log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_VG);
/*
* If no VG names or tags were supplied, then process all VGs.
*/
if (dm_list_empty(arg_vgnames) && dm_list_empty(arg_tags))
process_all = 1;
/*
* FIXME If one_vgname, only proceed if exactly one VG matches tags or selection.
*/
dm_list_iterate_items(vgnl, vgnameids_to_process) {
vg_name = vgnl->vg_name;
vg_uuid = vgnl->vgid;
skip = 0;
notfound = 0;
uuid[0] = '\0';
if (is_orphan_vg(vg_name)) {
log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_ORPHAN);
log_set_report_object_name_and_id(vg_name + sizeof(VG_ORPHANS), uuid);
} else {
if (vg_uuid && !id_write_format((const struct id*)vg_uuid, uuid, sizeof(uuid)))
stack;
log_set_report_object_name_and_id(vg_name, uuid);
}
if (sigint_caught()) {
ret_max = ECMD_FAILED;
goto_out;
}
log_very_verbose("Processing VG %s %s", vg_name, uuid);
if (!lockd_vg(cmd, vg_name, NULL, 0, &lockd_state)) {
stack;
ret_max = ECMD_FAILED;
report_log_ret_code(ret_max);
continue;
}
vg = vg_read(cmd, vg_name, vg_uuid, read_flags, lockd_state, &error_flags, &error_vg);
if (_ignore_vg(cmd, error_flags, error_vg, vg_name, arg_vgnames, read_flags, &skip, &notfound)) {
stack;
ret_max = ECMD_FAILED;
report_log_ret_code(ret_max);
if (error_vg)
unlock_and_release_vg(cmd, error_vg, vg_name);
goto endvg;
}
if (error_vg)
unlock_and_release_vg(cmd, error_vg, vg_name);
if (skip || notfound)
goto endvg;
/* Process this VG? */
if ((process_all ||
(!dm_list_empty(arg_vgnames) && str_list_match_item(arg_vgnames, vg_name)) ||
(!dm_list_empty(arg_tags) && str_list_match_list(arg_tags, &vg->tags, NULL))) &&
select_match_vg(cmd, handle, vg) && _select_matches(handle)) {
log_very_verbose("Running command for VG %s %s", vg_name, vg_uuid ? uuid : "");
ret = process_single_vg(cmd, vg_name, vg, handle);
_update_selection_result(handle, &whole_selected);
if (ret != ECMD_PROCESSED)
stack;
report_log_ret_code(ret);
if (ret > ret_max)
ret_max = ret;
}
unlock_vg(cmd, vg, vg_name);
endvg:
release_vg(vg);
if (!lockd_vg(cmd, vg_name, "un", 0, &lockd_state))
stack;
log_set_report_object_name_and_id(NULL, NULL);
}
/* the VG is selected if at least one LV is selected */
_set_final_selection_result(handle, whole_selected);
do_report_ret_code = 0;
out:
if (do_report_ret_code)
report_log_ret_code(ret_max);
log_restore_report_state(saved_log_report_state);
return ret_max;
}
/*
* Check if a command line VG name is ambiguous, i.e. there are multiple VGs on
* the system that have the given name. If *one* VG with the given name is
* local and the rest are foreign, then use the local VG (removing foreign VGs
* with the same name from the vgnameids_on_system list). If multiple VGs with
* the given name are local, we don't know which VG is intended, so remove the
* ambiguous name from the list of args.
*/
static int _resolve_duplicate_vgnames(struct cmd_context *cmd,
struct dm_list *arg_vgnames,
struct dm_list *vgnameids_on_system)
{
struct dm_str_list *sl, *sl2;
struct vgnameid_list *vgnl, *vgnl2;
char uuid[64] __attribute__((aligned(8)));
int found;
int ret = ECMD_PROCESSED;
dm_list_iterate_items_safe(sl, sl2, arg_vgnames) {
found = 0;
dm_list_iterate_items(vgnl, vgnameids_on_system) {
if (strcmp(sl->str, vgnl->vg_name))
continue;
found++;
}
if (found < 2)
continue;
/*
* More than one VG match the given name.
* If only one is local, use that one.
*/
found = 0;
dm_list_iterate_items_safe(vgnl, vgnl2, vgnameids_on_system) {
if (strcmp(sl->str, vgnl->vg_name))
continue;
/*
* label scan has already populated lvmcache vginfo with
* this information.
*/
if (lvmcache_vg_is_foreign(cmd, vgnl->vg_name, vgnl->vgid)) {
if (!id_write_format((const struct id*)vgnl->vgid, uuid, sizeof(uuid)))
stack;
dm_list_del(&vgnl->list);
} else {
found++;
}
}
if (found < 2)
continue;
/*
* More than one VG with this name is local so the intended VG
* is unknown.
*/
log_error("Multiple VGs found with the same name: skipping %s", sl->str);
log_error("Use --select vg_uuid=<uuid> in place of the VG name.");
dm_list_del(&sl->list);
ret = ECMD_FAILED;
}
return ret;
}
/*
* For each arg_vgname, move the corresponding entry from
* vgnameids_on_system to vgnameids_to_process. If an
* item in arg_vgnames doesn't exist in vgnameids_on_system,
* then add a new entry for it to vgnameids_to_process.
*/
static void _choose_vgs_to_process(struct cmd_context *cmd,
struct dm_list *arg_vgnames,
struct dm_list *vgnameids_on_system,
struct dm_list *vgnameids_to_process)
{
char uuid[64] __attribute__((aligned(8)));
struct dm_str_list *sl, *sl2;
struct vgnameid_list *vgnl, *vgnl2;
struct id id;
int arg_is_uuid = 0;
int found;
dm_list_iterate_items_safe(sl, sl2, arg_vgnames) {
found = 0;
dm_list_iterate_items_safe(vgnl, vgnl2, vgnameids_on_system) {
if (strcmp(sl->str, vgnl->vg_name))
continue;
dm_list_del(&vgnl->list);
dm_list_add(vgnameids_to_process, &vgnl->list);
found = 1;
break;
}
/*
* If the VG name arg looks like a UUID, then check if it
* matches the UUID of a VG. (--select should generally
* be used to select a VG by uuid instead.)
*/
if (!found && (cmd->cname->flags & ALLOW_UUID_AS_NAME))
arg_is_uuid = id_read_format_try(&id, sl->str);
if (!found && arg_is_uuid) {
dm_list_iterate_items_safe(vgnl, vgnl2, vgnameids_on_system) {
if (!(id_write_format((const struct id*)vgnl->vgid, uuid, sizeof(uuid))))
continue;
if (strcmp(sl->str, uuid))
continue;
log_print("Processing VG %s because of matching UUID %s",
vgnl->vg_name, uuid);
dm_list_del(&vgnl->list);
dm_list_add(vgnameids_to_process, &vgnl->list);
/* Make the arg_vgnames entry use the actual VG name. */
sl->str = dm_pool_strdup(cmd->mem, vgnl->vg_name);
found = 1;
break;
}
}
/*
* If the name arg was not found in the list of all VGs, then
* it probably doesn't exist, but we want the "VG not found"
* failure to be handled by the existing vg_read() code for
* that error. So, create an entry with just the VG name so
* that the processing loop will attempt to process it and use
* the vg_read() error path.
*/
if (!found) {
log_verbose("VG name on command line not found in list of VGs: %s", sl->str);
if (!(vgnl = dm_pool_alloc(cmd->mem, sizeof(*vgnl))))
continue;
vgnl->vgid = NULL;
if (!(vgnl->vg_name = dm_pool_strdup(cmd->mem, sl->str)))
continue;
dm_list_add(vgnameids_to_process, &vgnl->list);
}
}
}
/*
* Call process_single_vg() for each VG selected by the command line arguments.
* If one_vgname is set, process only that VG and ignore argc/argv (which should be 0/NULL).
* If one_vgname is not set, get VG names to process from argc/argv.
*/
int process_each_vg(struct cmd_context *cmd,
int argc, char **argv,
const char *one_vgname,
struct dm_list *use_vgnames,
uint32_t read_flags,
int include_internal,
struct processing_handle *handle,
process_single_vg_fn_t process_single_vg)
{
log_report_t saved_log_report_state = log_get_report_state();
int handle_supplied = handle != NULL;
struct dm_list arg_tags; /* str_list */
struct dm_list arg_vgnames; /* str_list */
struct dm_list vgnameids_on_system; /* vgnameid_list */
struct dm_list vgnameids_to_process; /* vgnameid_list */
int enable_all_vgs = (cmd->cname->flags & ALL_VGS_IS_DEFAULT);
int process_all_vgs_on_system = 0;
int ret_max = ECMD_PROCESSED;
int ret;
log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_VG);
log_debug("Processing each VG");
/* Disable error in vg_read so we can print it from ignore_vg. */
cmd->vg_read_print_access_error = 0;
dm_list_init(&arg_tags);
dm_list_init(&arg_vgnames);
dm_list_init(&vgnameids_on_system);
dm_list_init(&vgnameids_to_process);
/*
* Find any VGs or tags explicitly provided on the command line.
*/
if ((ret = _get_arg_vgnames(cmd, argc, argv, one_vgname, use_vgnames, &arg_vgnames, &arg_tags)) != ECMD_PROCESSED) {
ret_max = ret;
goto_out;
}
/*
* Process all VGs on the system when:
* . tags are specified and all VGs need to be read to
* look for matching tags.
* . no VG names are specified and the command defaults
* to processing all VGs when none are specified.
*/
if ((dm_list_empty(&arg_vgnames) && enable_all_vgs) || !dm_list_empty(&arg_tags))
process_all_vgs_on_system = 1;
/*
* Needed for a current listing of the global VG namespace.
*/
if (process_all_vgs_on_system && !lock_global(cmd, "sh")) {
ret_max = ECMD_FAILED;
goto_out;
}
/*
* Scan all devices to populate lvmcache with initial
* list of PVs and VGs.
*/
if (!(read_flags & PROCESS_SKIP_SCAN))
lvmcache_label_scan(cmd);
/*
* A list of all VGs on the system is needed when:
* . processing all VGs on the system
* . A VG name is specified which may refer to one
* of multiple VGs on the system with that name.
*/
log_very_verbose("Obtaining the complete list of VGs to process");
if (!lvmcache_get_vgnameids(cmd, &vgnameids_on_system, NULL, include_internal)) {
ret_max = ECMD_FAILED;
goto_out;
}
if (!dm_list_empty(&arg_vgnames)) {
/* This may remove entries from arg_vgnames or vgnameids_on_system. */
ret = _resolve_duplicate_vgnames(cmd, &arg_vgnames, &vgnameids_on_system);
if (ret > ret_max)
ret_max = ret;
if (dm_list_empty(&arg_vgnames) && dm_list_empty(&arg_tags)) {
ret_max = ECMD_FAILED;
goto out;
}
}
if (dm_list_empty(&arg_vgnames) && dm_list_empty(&vgnameids_on_system)) {
/* FIXME Should be log_print, but suppressed for reporting cmds */
log_verbose("No volume groups found.");
ret_max = ECMD_PROCESSED;
goto out;
}
if (dm_list_empty(&arg_vgnames))
read_flags |= READ_OK_NOTFOUND;
/*
* When processing all VGs, vgnameids_on_system simply becomes
* vgnameids_to_process.
* When processing only specified VGs, then for each item in
* arg_vgnames, move the corresponding entry from
* vgnameids_on_system to vgnameids_to_process.
*/
if (process_all_vgs_on_system)
dm_list_splice(&vgnameids_to_process, &vgnameids_on_system);
else
_choose_vgs_to_process(cmd, &arg_vgnames, &vgnameids_on_system, &vgnameids_to_process);
if (!handle && !(handle = init_processing_handle(cmd, NULL))) {
ret_max = ECMD_FAILED;
goto_out;
}
if (handle->internal_report_for_select && !handle->selection_handle &&
!init_selection_handle(cmd, handle, VGS)) {
ret_max = ECMD_FAILED;
goto_out;
}
ret = _process_vgnameid_list(cmd, read_flags, &vgnameids_to_process,
&arg_vgnames, &arg_tags, handle, process_single_vg);
if (ret > ret_max)
ret_max = ret;
out:
if (!handle_supplied)
destroy_processing_handle(cmd, handle);
log_restore_report_state(saved_log_report_state);
return ret_max;
}
static struct dm_str_list *_str_list_match_item_with_prefix(const struct dm_list *sll, const char *prefix, const char *str)
{
struct dm_str_list *sl;
size_t prefix_len = strlen(prefix);
dm_list_iterate_items(sl, sll) {
if (!strncmp(prefix, sl->str, prefix_len) &&
!strcmp(sl->str + prefix_len, str))
return sl;
}
return NULL;
}
/*
* Dummy LV, segment type and segment to represent all historical LVs.
*/
static struct logical_volume _historical_lv = {
.name = "",
.major = -1,
.minor = -1,
.snapshot_segs = DM_LIST_HEAD_INIT(_historical_lv.snapshot_segs),
.segments = DM_LIST_HEAD_INIT(_historical_lv.segments),
.tags = DM_LIST_HEAD_INIT(_historical_lv.tags),
.segs_using_this_lv = DM_LIST_HEAD_INIT(_historical_lv.segs_using_this_lv),
.indirect_glvs = DM_LIST_HEAD_INIT(_historical_lv.indirect_glvs),
.hostname = "",
};
static struct segment_type _historical_segment_type = {
.name = "historical",
.flags = SEG_VIRTUAL | SEG_CANNOT_BE_ZEROED,
};
static struct lv_segment _historical_lv_segment = {
.lv = &_historical_lv,
.segtype = &_historical_segment_type,
.len = 0,
.tags = DM_LIST_HEAD_INIT(_historical_lv_segment.tags),
.origin_list = DM_LIST_HEAD_INIT(_historical_lv_segment.origin_list),
};
int opt_in_list_is_set(struct cmd_context *cmd, int *opts, int count,
int *match_count, int *unmatch_count)
{
int match = 0;
int unmatch = 0;
int i;
for (i = 0; i < count; i++) {
if (arg_is_set(cmd, opts[i]))
match++;
else
unmatch++;
}
if (match_count)
*match_count = match;
if (unmatch_count)
*unmatch_count = unmatch;
return match ? 1 : 0;
}
void opt_array_to_str(struct cmd_context *cmd, int *opts, int count,
char *buf, int len)
{
int pos = 0;
int ret;
int i;
for (i = 0; i < count; i++) {
ret = snprintf(buf + pos, len - pos, "%s ", arg_long_option_name(opts[i]));
if (ret >= len - pos)
break;
pos += ret;
}
buf[len - 1] = '\0';
}
static void _lvp_bits_to_str(uint64_t bits, char *buf, int len)
{
struct lv_prop *prop;
int lvp_enum;
int pos = 0;
int ret;
for (lvp_enum = 0; lvp_enum < LVP_COUNT; lvp_enum++) {
if (!(prop = get_lv_prop(lvp_enum)))
continue;
if (lvp_bit_is_set(bits, lvp_enum)) {
ret = snprintf(buf + pos, len - pos, "%s ", prop->name);
if (ret >= len - pos)
break;
pos += ret;
}
}
buf[len - 1] = '\0';
}
static void _lvt_bits_to_str(uint64_t bits, char *buf, int len)
{
struct lv_type *type;
int lvt_enum;
int pos = 0;
int ret;
for (lvt_enum = 0; lvt_enum < LVT_COUNT; lvt_enum++) {
if (!(type = get_lv_type(lvt_enum)))
continue;
if (lvt_bit_is_set(bits, lvt_enum)) {
ret = snprintf(buf + pos, len - pos, "%s ", type->name);
if (ret >= len - pos)
break;
pos += ret;
}
}
buf[len - 1] = '\0';
}
/*
* This is the lv_prop function pointer used for lv_is_foo() #defines.
* Alternatively, lv_is_foo() could all be turned into functions.
*/
static int _lv_is_prop(struct cmd_context *cmd, struct logical_volume *lv, int lvp_enum)
{
switch (lvp_enum) {
case is_locked_LVP:
return lv_is_locked(lv);
case is_partial_LVP:
return lv_is_partial(lv);
case is_virtual_LVP:
return lv_is_virtual(lv);
case is_merging_LVP:
return lv_is_merging(lv);
case is_merging_origin_LVP:
return lv_is_merging_origin(lv);
case is_converting_LVP:
return lv_is_converting(lv);
case is_external_origin_LVP:
return lv_is_external_origin(lv);
case is_virtual_origin_LVP:
return lv_is_virtual_origin(lv);
case is_not_synced_LVP:
return lv_is_not_synced(lv);
case is_pending_delete_LVP:
return lv_is_pending_delete(lv);
case is_error_when_full_LVP:
return lv_is_error_when_full(lv);
case is_pvmove_LVP:
return lv_is_pvmove(lv);
case is_removed_LVP:
return lv_is_removed(lv);
case is_vg_writable_LVP:
return (lv->vg->status & LVM_WRITE) ? 1 : 0;
case is_thinpool_data_LVP:
return lv_is_thin_pool_data(lv);
case is_thinpool_metadata_LVP:
return lv_is_thin_pool_metadata(lv);
case is_cachepool_data_LVP:
return lv_is_cache_pool_data(lv);
case is_cachepool_metadata_LVP:
return lv_is_cache_pool_metadata(lv);
case is_mirror_image_LVP:
return lv_is_mirror_image(lv);
case is_mirror_log_LVP:
return lv_is_mirror_log(lv);
case is_raid_image_LVP:
return lv_is_raid_image(lv);
case is_raid_metadata_LVP:
return lv_is_raid_metadata(lv);
case is_origin_LVP: /* use lv_is_thick_origin */
return lv_is_origin(lv);
case is_thick_origin_LVP:
return lv_is_thick_origin(lv);
case is_thick_snapshot_LVP:
return lv_is_thick_snapshot(lv);
case is_thin_origin_LVP:
return lv_is_thin_origin(lv, NULL);
case is_thin_snapshot_LVP:
return lv_is_thin_snapshot(lv);
case is_cache_origin_LVP:
return lv_is_cache_origin(lv);
case is_merging_cow_LVP:
return lv_is_merging_cow(lv);
case is_cow_covering_origin_LVP:
return lv_is_cow_covering_origin(lv);
case is_visible_LVP:
return lv_is_visible(lv);
case is_historical_LVP:
return lv_is_historical(lv);
case is_raid_with_tracking_LVP:
return lv_is_raid_with_tracking(lv);
case is_raid_with_integrity_LVP:
return lv_raid_has_integrity(lv);
default:
log_error(INTERNAL_ERROR "unknown lv property value lvp_enum %d", lvp_enum);
}
return 0;
}
/*
* Check if an LV matches a given LV type enum.
*/
static int _lv_is_type(struct cmd_context *cmd, struct logical_volume *lv, int lvt_enum)
{
struct lv_segment *seg = first_seg(lv);
switch (lvt_enum) {
case striped_LVT:
return seg_is_striped(seg) && !lv_is_cow(lv);
case linear_LVT:
return seg_is_linear(seg) && !lv_is_cow(lv);
case snapshot_LVT:
return lv_is_cow(lv);
case thin_LVT:
return lv_is_thin_volume(lv);
case thinpool_LVT:
return lv_is_thin_pool(lv);
case cache_LVT:
return lv_is_cache(lv);
case cachepool_LVT:
return lv_is_cache_pool(lv);
case vdo_LVT:
return lv_is_vdo(lv);
case vdopool_LVT:
return lv_is_vdo_pool(lv);
case vdopooldata_LVT:
return lv_is_vdo_pool_data(lv);
case mirror_LVT:
return lv_is_mirror(lv);
case raid_LVT:
return lv_is_raid(lv);
case raid0_LVT:
return seg_is_any_raid0(seg);
case raid1_LVT:
return seg_is_raid1(seg);
case raid4_LVT:
return seg_is_raid4(seg);
case raid5_LVT:
return seg_is_any_raid5(seg);
case raid6_LVT:
return seg_is_any_raid6(seg);
case raid10_LVT:
return seg_is_raid10(seg);
case writecache_LVT:
return seg_is_writecache(seg);
case integrity_LVT:
return seg_is_integrity(seg);
case error_LVT:
return !strcmp(seg->segtype->name, SEG_TYPE_NAME_ERROR);
case zero_LVT:
return !strcmp(seg->segtype->name, SEG_TYPE_NAME_ZERO);
default:
log_error(INTERNAL_ERROR "unknown lv type value lvt_enum %d", lvt_enum);
}
return 0;
}
int get_lvt_enum(struct logical_volume *lv)
{
struct lv_segment *seg = first_seg(lv);
/*
* The order these are checked is important, because a snapshot LV has
* a linear seg type.
*/
if (lv_is_cow(lv))
return snapshot_LVT;
if (seg_is_linear(seg))
return linear_LVT;
if (seg_is_striped(seg))
return striped_LVT;
if (lv_is_thin_volume(lv))
return thin_LVT;
if (lv_is_thin_pool(lv))
return thinpool_LVT;
if (lv_is_cache(lv))
return cache_LVT;
if (lv_is_cache_pool(lv))
return cachepool_LVT;
if (lv_is_vdo(lv))
return vdo_LVT;
if (lv_is_vdo_pool(lv))
return vdopool_LVT;
if (lv_is_vdo_pool_data(lv))
return vdopooldata_LVT;
if (lv_is_mirror(lv))
return mirror_LVT;
if (lv_is_raid(lv))
return raid_LVT;
if (seg_is_any_raid0(seg))
return raid0_LVT;
if (seg_is_raid1(seg))
return raid1_LVT;
if (seg_is_raid4(seg))
return raid4_LVT;
if (seg_is_any_raid5(seg))
return raid5_LVT;
if (seg_is_any_raid6(seg))
return raid6_LVT;
if (seg_is_raid10(seg))
return raid10_LVT;
if (seg_is_writecache(seg))
return writecache_LVT;
if (seg_is_integrity(seg))
return integrity_LVT;
if (!strcmp(seg->segtype->name, SEG_TYPE_NAME_ERROR))
return error_LVT;
if (!strcmp(seg->segtype->name, SEG_TYPE_NAME_ZERO))
return zero_LVT;
return 0;
}
/*
* Call lv_is_<type> for each <type>_LVT bit set in lvt_bits.
* If lv matches one of the specified lv types, then return 1.
*/
static int _lv_types_match(struct cmd_context *cmd, struct logical_volume *lv, uint64_t lvt_bits,
uint64_t *match_bits, uint64_t *unmatch_bits)
{
struct lv_type *type;
int lvt_enum;
int found_a_match = 0;
int match;
if (match_bits)
*match_bits = 0;
if (unmatch_bits)
*unmatch_bits = 0;
for (lvt_enum = 1; lvt_enum < LVT_COUNT; lvt_enum++) {
if (!lvt_bit_is_set(lvt_bits, lvt_enum))
continue;
if (!(type = get_lv_type(lvt_enum)))
continue;
/*
* All types are currently handled by _lv_is_type()
* because lv_is_type() are #defines and not exposed
* in tools.h
*/
if (!type->fn)
match = _lv_is_type(cmd, lv, lvt_enum);
else
match = type->fn(cmd, lv);
if (match)
found_a_match = 1;
if (match_bits && match)
*match_bits |= lvt_enum_to_bit(lvt_enum);
if (unmatch_bits && !match)
*unmatch_bits |= lvt_enum_to_bit(lvt_enum);
}
return found_a_match;
}
/*
* Call lv_is_<prop> for each <prop>_LVP bit set in lvp_bits.
* If lv matches all of the specified lv properties, then return 1.
*/
static int _lv_props_match(struct cmd_context *cmd, struct logical_volume *lv, uint64_t lvp_bits,
uint64_t *match_bits, uint64_t *unmatch_bits)
{
struct lv_prop *prop;
int lvp_enum;
int found_a_mismatch = 0;
int match;
if (match_bits)
*match_bits = 0;
if (unmatch_bits)
*unmatch_bits = 0;
for (lvp_enum = 1; lvp_enum < LVP_COUNT; lvp_enum++) {
if (!lvp_bit_is_set(lvp_bits, lvp_enum))
continue;
if (!(prop = get_lv_prop(lvp_enum)))
continue;
if (!prop->fn)
match = _lv_is_prop(cmd, lv, lvp_enum);
else
match = prop->fn(cmd, lv);
if (!match)
found_a_mismatch = 1;
if (match_bits && match)
*match_bits |= lvp_enum_to_bit(lvp_enum);
if (unmatch_bits && !match)
*unmatch_bits |= lvp_enum_to_bit(lvp_enum);
}
return !found_a_mismatch;
}
static int _check_lv_types(struct cmd_context *cmd, struct logical_volume *lv, int pos)
{
int ret;
if (!pos)
return 1;
if (!cmd->command->required_pos_args[pos-1].def.lvt_bits)
return 1;
if (!val_bit_is_set(cmd->command->required_pos_args[pos-1].def.val_bits, lv_VAL)) {
log_error(INTERNAL_ERROR "Command %d:%s arg position %d does not permit an LV (%llx)",
cmd->command->command_index, cmd->command->command_id,
pos, (unsigned long long)cmd->command->required_pos_args[pos-1].def.val_bits);
return 0;
}
ret = _lv_types_match(cmd, lv, cmd->command->required_pos_args[pos-1].def.lvt_bits, NULL, NULL);
if (!ret) {
int lvt_enum = get_lvt_enum(lv);
struct lv_type *type = get_lv_type(lvt_enum);
if (!type) {
log_warn("Command on LV %s does not accept LV type unknown (%d).",
display_lvname(lv), lvt_enum);
} else {
log_warn("Command on LV %s does not accept LV type %s.",
display_lvname(lv), type->name);
}
}
return ret;
}
/* Check if LV passes each rule specified in command definition. */
static int _check_lv_rules(struct cmd_context *cmd, struct logical_volume *lv)
{
char buf[64];
struct cmd_rule *rule;
struct lv_type *lvtype = NULL;
uint64_t lv_props_match_bits = 0, lv_props_unmatch_bits = 0;
uint64_t lv_types_match_bits = 0, lv_types_unmatch_bits = 0;
int opts_match_count = 0, opts_unmatch_count = 0;
int lvt_enum;
int ret = 1;
int i;
lvt_enum = get_lvt_enum(lv);
if (lvt_enum)
lvtype = get_lv_type(lvt_enum);
for (i = 0; i < cmd->command->rule_count; i++) {
rule = &cmd->command->rules[i];
/*
* RULE: <conditions> INVALID|REQUIRE <checks>
*
* If all the conditions apply to the command+LV, then
* the checks are performed. If all conditions are zero
* (!opts_count, !lvt_bits, !lvp_bits), then the check
* is always performed.
*
* Conditions:
*
* 1. options (opts): if any of the specified options are set,
* then the checks may apply.
*
* 2. LV types (lvt_bits): if any of the specified LV types
* match the LV, then the checks may apply.
*
* 3. LV properties (lvp_bits): if all of the specified
* LV properties match the LV, then the checks may apply.
*
* If conditions 1, 2, 3 all pass, then the checks apply.
*
* Checks:
*
* 1. options (check_opts):
* INVALID: if any of the specified options are set,
* then the command fails.
* REQUIRE: if any of the specified options are not set,
* then the command fails.
*
* 2. LV types (check_lvt_bits):
* INVALID: if any of the specified LV types match the LV,
* then the command fails.
* REQUIRE: if none of the specified LV types match the LV,
* then the command fails.
*
* 3. LV properties (check_lvp_bits):
* INVALID: if any of the specified LV properties match
* the LV, then the command fails.
* REQUIRE: if any of the specified LV properties do not match
* the LV, then the command fails.
*/
if (rule->opts_count && !opt_in_list_is_set(cmd, rule->opts, rule->opts_count, NULL, NULL))
continue;
/* If LV matches one type in lvt_bits, this returns 1. */
if (rule->lvt_bits && !_lv_types_match(cmd, lv, rule->lvt_bits, NULL, NULL))
continue;
/* If LV matches all properties in lvp_bits, this returns 1. */
if (rule->lvp_bits && !_lv_props_match(cmd, lv, rule->lvp_bits, NULL, NULL))
continue;
/*
* Check the options, LV types, LV properties.
*/
if (rule->check_opts)
opt_in_list_is_set(cmd, rule->check_opts, rule->check_opts_count,
&opts_match_count, &opts_unmatch_count);
if (rule->check_lvt_bits)
_lv_types_match(cmd, lv, rule->check_lvt_bits,
&lv_types_match_bits, &lv_types_unmatch_bits);
if (rule->check_lvp_bits)
_lv_props_match(cmd, lv, rule->check_lvp_bits,
&lv_props_match_bits, &lv_props_unmatch_bits);
/*
* Evaluate if the check results pass based on the rule.
* The options are checked again here because the previous
* option validation (during command matching) does not cover
* cases where the option is combined with conditions of LV types
* or properties.
*/
/* Fail if any invalid options are set. */
if (rule->check_opts && (rule->rule == RULE_INVALID) && opts_match_count) {
memset(buf, 0, sizeof(buf));
opt_array_to_str(cmd, rule->check_opts, rule->check_opts_count, buf, sizeof(buf));
log_warn("Command on LV %s has invalid use of option %s.",
display_lvname(lv), buf);
ret = 0;
}
/* Fail if any required options are not set. */
if (rule->check_opts && (rule->rule == RULE_REQUIRE) && opts_unmatch_count) {
memset(buf, 0, sizeof(buf));
opt_array_to_str(cmd, rule->check_opts, rule->check_opts_count, buf, sizeof(buf));
log_warn("Command on LV %s requires option %s.",
display_lvname(lv), buf);
ret = 0;
}
/* Fail if the LV matches any of the invalid LV types. */
if (rule->check_lvt_bits && (rule->rule == RULE_INVALID) && lv_types_match_bits) {
if (rule->opts_count)
log_warn("Command on LV %s uses options invalid with LV type %s.",
display_lvname(lv), lvtype ? lvtype->name : "unknown");
else
log_warn("Command on LV %s with invalid LV type %s.",
display_lvname(lv), lvtype ? lvtype->name : "unknown");
ret = 0;
}
/* Fail if the LV does not match any of the required LV types. */
if (rule->check_lvt_bits && (rule->rule == RULE_REQUIRE) && !lv_types_match_bits) {
memset(buf, 0, sizeof(buf));
_lvt_bits_to_str(rule->check_lvt_bits, buf, sizeof(buf));
if (rule->opts_count)
log_warn("Command on LV %s uses options that require LV types %s.",
display_lvname(lv), buf);
else
log_warn("Command on LV %s does not accept LV type %s. Required LV types are %s.",
display_lvname(lv), lvtype ? lvtype->name : "unknown", buf);
ret = 0;
}
/* Fail if the LV matches any of the invalid LV properties. */
if (rule->check_lvp_bits && (rule->rule == RULE_INVALID) && lv_props_match_bits) {
memset(buf, 0, sizeof(buf));
_lvp_bits_to_str(lv_props_match_bits, buf, sizeof(buf));
if (rule->opts_count)
log_warn("Command on LV %s uses options that are invalid with LV properties: %s.",
display_lvname(lv), buf);
else
log_warn("Command on LV %s is invalid on LV with properties: %s.",
display_lvname(lv), buf);
ret = 0;
}
/* Fail if the LV does not match any of the required LV properties. */
if (rule->check_lvp_bits && (rule->rule == RULE_REQUIRE) && lv_props_unmatch_bits) {
memset(buf, 0, sizeof(buf));
_lvp_bits_to_str(lv_props_unmatch_bits, buf, sizeof(buf));
if (rule->opts_count)
log_warn("Command on LV %s uses options that require LV properties: %s.",
display_lvname(lv), buf);
else
log_warn("Command on LV %s requires LV with properties: %s.",
display_lvname(lv), buf);
ret = 0;
}
}
return ret;
}
/*
* Return which arg position the given LV is at,
* where 1 represents the first position arg.
* When the first position arg is repeatable,
* return 1 for all.
*
* Return 0 when the command has no required
* position args. (optional position args are
* not considered.)
*/
static int _find_lv_arg_position(struct cmd_context *cmd, struct logical_volume *lv)
{
const char *sep, *lvname;
int i;
if (cmd->command->rp_count == 0)
return 0;
if (cmd->command->rp_count == 1)
return 1;
for (i = 0; i < cmd->position_argc; i++) {
if (i == cmd->command->rp_count)
break;
if (!val_bit_is_set(cmd->command->required_pos_args[i].def.val_bits, lv_VAL))
continue;
if ((sep = strstr(cmd->position_argv[i], "/")))
lvname = sep + 1;
else
lvname = cmd->position_argv[i];
if (!strcmp(lvname, lv->name))
return i + 1;
}
/*
* If the last position arg is an LV and this
* arg is beyond that position, then the last
* LV position arg is repeatable, so return
* that position.
*/
if (i == cmd->command->rp_count) {
int last_pos = cmd->command->rp_count;
if (val_bit_is_set(cmd->command->required_pos_args[last_pos-1].def.val_bits, lv_VAL))
return last_pos;
}
return 0;
}
int process_each_lv_in_vg(struct cmd_context *cmd, struct volume_group *vg,
struct dm_list *arg_lvnames, const struct dm_list *tags_in,
int stop_on_error,
struct processing_handle *handle,
check_single_lv_fn_t check_single_lv,
process_single_lv_fn_t process_single_lv)
{
log_report_t saved_log_report_state = log_get_report_state();
char lv_uuid[64] __attribute__((aligned(8)));
char vg_uuid[64] __attribute__((aligned(8)));
int ret_max = ECMD_PROCESSED;
int ret = 0;
int whole_selected = 0;
int handle_supplied = handle != NULL;
unsigned process_lv;
unsigned process_all = 0;
unsigned tags_supplied = 0;
unsigned lvargs_supplied = 0;
int lv_is_named_arg;
int lv_arg_pos;
struct lv_list *lvl;
struct dm_str_list *sl;
struct dm_list final_lvs;
struct lv_list *final_lvl;
struct dm_list found_arg_lvnames;
struct glv_list *glvl, *tglvl;
int do_report_ret_code = 1;
log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_LV);
vg_uuid[0] = '\0';
if (!id_write_format(&vg->id, vg_uuid, sizeof(vg_uuid)))
stack;
dm_list_init(&final_lvs);
dm_list_init(&found_arg_lvnames);
if (tags_in && !dm_list_empty(tags_in))
tags_supplied = 1;
if (arg_lvnames && !dm_list_empty(arg_lvnames))
lvargs_supplied = 1;
if (!handle && !(handle = init_processing_handle(cmd, NULL))) {
ret_max = ECMD_FAILED;
goto_out;
}
if (handle->internal_report_for_select && !handle->selection_handle &&
!init_selection_handle(cmd, handle, LVS)) {
ret_max = ECMD_FAILED;
goto_out;
}
/* Process all LVs in this VG if no restrictions given
* or if VG tags match. */
if ((!tags_supplied && !lvargs_supplied) ||
(tags_supplied && str_list_match_list(tags_in, &vg->tags, NULL)))
process_all = 1;
log_set_report_object_group_and_group_id(vg->name, vg_uuid);
dm_list_iterate_items(lvl, &vg->lvs) {
lv_uuid[0] = '\0';
if (!id_write_format(&lvl->lv->lvid.id[1], lv_uuid, sizeof(lv_uuid)))
stack;
log_set_report_object_name_and_id(lvl->lv->name, lv_uuid);
if (sigint_caught()) {
ret_max = ECMD_FAILED;
goto_out;
}
if (lv_is_snapshot(lvl->lv))
continue;
/* Skip availability change for non-virt snaps when processing all LVs */
/* FIXME: pass process_all to process_single_lv() */
if (process_all && arg_is_set(cmd, activate_ARG) &&
lv_is_cow(lvl->lv) && !lv_is_virtual_origin(origin_from_cow(lvl->lv)))
continue;
if (lv_is_virtual_origin(lvl->lv) && !arg_is_set(cmd, all_ARG)) {
if (lvargs_supplied &&
str_list_match_item(arg_lvnames, lvl->lv->name))
log_print_unless_silent("Ignoring virtual origin logical volume %s.",
display_lvname(lvl->lv));
continue;
}
/*
* Only let hidden LVs through if --all was used or the LVs
* were specifically named on the command line.
*/
if (!lvargs_supplied && !lv_is_visible(lvl->lv) && !arg_is_set(cmd, all_ARG) &&
(!cmd->process_component_lvs || !lv_is_component(lvl->lv)))
continue;
/*
* Only let sanlock LV through if --all was used or if
* it is named on the command line.
*/
if (lv_is_lockd_sanlock_lv(lvl->lv)) {
if (arg_is_set(cmd, all_ARG) ||
(lvargs_supplied && str_list_match_item(arg_lvnames, lvl->lv->name))) {
log_very_verbose("Processing lockd_sanlock_lv %s/%s.", vg->name, lvl->lv->name);
} else {
continue;
}
}
/*
* process the LV if one of the following:
* - process_all is set
* - LV name matches a supplied LV name
* - LV tag matches a supplied LV tag
* - LV matches the selection
*/
process_lv = process_all;
if (lvargs_supplied && str_list_match_item(arg_lvnames, lvl->lv->name)) {
/* Remove LV from list of unprocessed LV names */
str_list_del(arg_lvnames, lvl->lv->name);
if (!str_list_add(cmd->mem, &found_arg_lvnames, lvl->lv->name)) {
log_error("strlist allocation failed.");
ret_max = ECMD_FAILED;
goto out;
}
process_lv = 1;
}
if (!process_lv && tags_supplied && str_list_match_list(tags_in, &lvl->lv->tags, NULL))
process_lv = 1;
process_lv = process_lv && select_match_lv(cmd, handle, vg, lvl->lv) && _select_matches(handle);
if (sigint_caught()) {
ret_max = ECMD_FAILED;
goto_out;
}
if (!process_lv)
continue;
log_very_verbose("Adding %s/%s to the list of LVs to be processed.", vg->name, lvl->lv->name);
if (!(final_lvl = dm_pool_zalloc(cmd->mem, sizeof(struct lv_list)))) {
log_error("Failed to allocate final LV list item.");
ret_max = ECMD_FAILED;
goto out;
}
final_lvl->lv = lvl->lv;
dm_list_add(&final_lvs, &final_lvl->list);
}
log_set_report_object_name_and_id(NULL, NULL);
/*
* If a PV is stacked on an LV, then the LV is kept open
* in bcache, and needs to be closed so the open fd doesn't
* interfere with processing the LV.
*/
dm_list_iterate_items(lvl, &final_lvs)
label_scan_invalidate_lv(cmd, lvl->lv);
dm_list_iterate_items(lvl, &final_lvs) {
lv_uuid[0] = '\0';
if (!id_write_format(&lvl->lv->lvid.id[1], lv_uuid, sizeof(lv_uuid)))
stack;
log_set_report_object_name_and_id(lvl->lv->name, lv_uuid);
if (sigint_caught()) {
ret_max = ECMD_FAILED;
goto_out;
}
/*
* FIXME: Once we have index over vg->removed_lvs, check directly
* LV presence there and remove LV_REMOVE flag/lv_is_removed fn
* as they won't be needed anymore.
*/
if (lv_is_removed(lvl->lv))
continue;
lv_is_named_arg = str_list_match_item(&found_arg_lvnames, lvl->lv->name);
lv_arg_pos = _find_lv_arg_position(cmd, lvl->lv);
/*
* The command definition may include restrictions on the
* types and properties of LVs that can be processed.
*/
if (!_check_lv_types(cmd, lvl->lv, lv_arg_pos)) {
/* FIXME: include this result in report log? */
if (lv_is_named_arg) {
log_error("Command not permitted on LV %s.", display_lvname(lvl->lv));
ret_max = ECMD_FAILED;
}
continue;
}
if (!_check_lv_rules(cmd, lvl->lv)) {
/* FIXME: include this result in report log? */
if (lv_is_named_arg) {
log_error("Command not permitted on LV %s.", display_lvname(lvl->lv));
ret_max = ECMD_FAILED;
}
continue;
}
if (check_single_lv && !check_single_lv(cmd, lvl->lv, handle, lv_is_named_arg)) {
if (lv_is_named_arg)
ret_max = ECMD_FAILED;
continue;
}
log_very_verbose("Processing LV %s in VG %s.", lvl->lv->name, vg->name);
ret = process_single_lv(cmd, lvl->lv, handle);
if (handle_supplied)
_update_selection_result(handle, &whole_selected);
if (ret != ECMD_PROCESSED)
stack;
report_log_ret_code(ret);
if (ret > ret_max)
ret_max = ret;
if (stop_on_error && ret != ECMD_PROCESSED) {
do_report_ret_code = 0;
goto_out;
}
}
log_set_report_object_name_and_id(NULL, NULL);
if (handle->include_historical_lvs && !tags_supplied) {
if (!dm_list_size(&_historical_lv.segments))
dm_list_add(&_historical_lv.segments, &_historical_lv_segment.list);
_historical_lv.vg = vg;
dm_list_iterate_items_safe(glvl, tglvl, &vg->historical_lvs) {
lv_uuid[0] = '\0';
if (!id_write_format(&glvl->glv->historical->lvid.id[1], lv_uuid, sizeof(lv_uuid)))
stack;
log_set_report_object_name_and_id(glvl->glv->historical->name, lv_uuid);
process_lv = process_all;
if (lvargs_supplied &&
(sl = _str_list_match_item_with_prefix(arg_lvnames, HISTORICAL_LV_PREFIX, glvl->glv->historical->name))) {
str_list_del(arg_lvnames, glvl->glv->historical->name);
dm_list_del(&sl->list);
process_lv = 1;
}
process_lv = process_lv && select_match_lv(cmd, handle, vg, lvl->lv) && _select_matches(handle);
if (sigint_caught()) {
ret_max = ECMD_FAILED;
goto_out;
}
if (!process_lv)
continue;
_historical_lv.this_glv = glvl->glv;
_historical_lv.name = glvl->glv->historical->name;
log_very_verbose("Processing historical LV %s in VG %s.", glvl->glv->historical->name, vg->name);
ret = process_single_lv(cmd, &_historical_lv, handle);
if (handle_supplied)
_update_selection_result(handle, &whole_selected);
if (ret != ECMD_PROCESSED)
stack;
report_log_ret_code(ret);
if (ret > ret_max)
ret_max = ret;
if (stop_on_error && ret != ECMD_PROCESSED) {
do_report_ret_code = 0;
goto_out;
}
}
log_set_report_object_name_and_id(NULL, NULL);
}
if (lvargs_supplied) {
/*
* FIXME: lvm supports removal of LV with all its dependencies
* this leads to miscalculation that depends on the order of args.
*/
dm_list_iterate_items(sl, arg_lvnames) {
log_set_report_object_name_and_id(sl->str, NULL);
log_error("Failed to find logical volume \"%s/%s\"",
vg->name, sl->str);
if (ret_max < ECMD_FAILED)
ret_max = ECMD_FAILED;
report_log_ret_code(ret_max);
}
}
do_report_ret_code = 0;
out:
if (do_report_ret_code)
report_log_ret_code(ret_max);
log_set_report_object_name_and_id(NULL, NULL);
log_set_report_object_group_and_group_id(NULL, NULL);
if (!handle_supplied)
destroy_processing_handle(cmd, handle);
else
_set_final_selection_result(handle, whole_selected);
log_restore_report_state(saved_log_report_state);
return ret_max;
}
/*
* If arg is tag, add it to arg_tags
* else the arg is either vgname or vgname/lvname:
* - add the vgname of each arg to arg_vgnames
* - if arg has no lvname, add just vgname arg_lvnames,
* it represents all lvs in the vg
* - if arg has lvname, add vgname/lvname to arg_lvnames
*/
static int _get_arg_lvnames(struct cmd_context *cmd,
int argc, char **argv,
const char *one_vgname, const char *one_lvname,
struct dm_list *arg_vgnames,
struct dm_list *arg_lvnames,
struct dm_list *arg_tags)
{
int opt = 0;
int ret_max = ECMD_PROCESSED;
char *vglv;
size_t vglv_sz;
const char *vgname;
const char *lv_name;
const char *tmp_lv_name;
const char *vgname_def;
unsigned dev_dir_found;
if (one_vgname) {
if (!str_list_add(cmd->mem, arg_vgnames,
dm_pool_strdup(cmd->mem, one_vgname))) {
log_error("strlist allocation failed.");
return ECMD_FAILED;
}
if (!one_lvname) {
if (!str_list_add(cmd->mem, arg_lvnames,
dm_pool_strdup(cmd->mem, one_vgname))) {
log_error("strlist allocation failed.");
return ECMD_FAILED;
}
} else {
vglv_sz = strlen(one_vgname) + strlen(one_lvname) + 2;
if (!(vglv = dm_pool_alloc(cmd->mem, vglv_sz)) ||
dm_snprintf(vglv, vglv_sz, "%s/%s", one_vgname, one_lvname) < 0) {
log_error("vg/lv string alloc failed.");
return ECMD_FAILED;
}
if (!str_list_add(cmd->mem, arg_lvnames, vglv)) {
log_error("strlist allocation failed.");
return ECMD_FAILED;
}
}
return ret_max;
}
for (; opt < argc; opt++) {
lv_name = argv[opt];
dev_dir_found = 0;
/* Do we have a tag or vgname or lvname? */
vgname = lv_name;
if (*vgname == '@') {
if (!validate_tag(vgname + 1)) {
log_error("Skipping invalid tag %s.", vgname);
continue;
}
if (!str_list_add(cmd->mem, arg_tags,
dm_pool_strdup(cmd->mem, vgname + 1))) {
log_error("strlist allocation failed.");
return ECMD_FAILED;
}
continue;
}
/* FIXME Jumbled parsing */
vgname = skip_dev_dir(cmd, vgname, &dev_dir_found);
if (*vgname == '/') {
log_error("\"%s\": Invalid path for Logical Volume.",
argv[opt]);
if (ret_max < ECMD_FAILED)
ret_max = ECMD_FAILED;
continue;
}
lv_name = vgname;
if ((tmp_lv_name = strchr(vgname, '/'))) {
/* Must be an LV */
lv_name = tmp_lv_name;
while (*lv_name == '/')
lv_name++;
if (!(vgname = extract_vgname(cmd, vgname))) {
if (ret_max < ECMD_FAILED) {
stack;
ret_max = ECMD_FAILED;
}
continue;
}
} else if (!dev_dir_found &&
(vgname_def = _default_vgname(cmd)))
vgname = vgname_def;
else
lv_name = NULL;
if (!str_list_add(cmd->mem, arg_vgnames,
dm_pool_strdup(cmd->mem, vgname))) {
log_error("strlist allocation failed.");
return ECMD_FAILED;
}
if (!lv_name) {
if (!str_list_add(cmd->mem, arg_lvnames,
dm_pool_strdup(cmd->mem, vgname))) {
log_error("strlist allocation failed.");
return ECMD_FAILED;
}
} else {
vglv_sz = strlen(vgname) + strlen(lv_name) + 2;
if (!(vglv = dm_pool_alloc(cmd->mem, vglv_sz)) ||
dm_snprintf(vglv, vglv_sz, "%s/%s", vgname, lv_name) < 0) {
log_error("vg/lv string alloc failed.");
return ECMD_FAILED;
}
if (!str_list_add(cmd->mem, arg_lvnames, vglv)) {
log_error("strlist allocation failed.");
return ECMD_FAILED;
}
}
}
return ret_max;
}
/*
* Finding vgname/lvname to process.
*
* When the position arg is a single name without any '/'
* it is treated as an LV name (leaving the VG unknown).
* Other option values, or env var, must be searched for a VG name.
* If one of the option values contains a vgname/lvname value,
* then the VG name is extracted and used for the LV position arg.
* Or, if the env var has the VG name, that is used.
*
* Other option values that are searched for a VG name are:
* --thinpool, --cachepool, --poolmetadata.
*
* . command vg/lv1
* . add vg to arg_vgnames
* . add vg/lv1 to arg_lvnames
*
* command lv1
* . error: no vg name (unless LVM_VG_NAME)
*
* command --option=vg/lv1 vg/lv2
* . verify both vg names match
* . add vg to arg_vgnames
* . add vg/lv2 to arg_lvnames
*
* command --option=lv1 lv2
* . error: no vg name (unless LVM_VG_NAME)
*
* command --option=vg/lv1 lv2
* . add vg to arg_vgnames
* . add vg/lv2 to arg_lvnames
*
* command --option=lv1 vg/lv2
* . add vg to arg_vgnames
* . add vg/lv2 to arg_lvnames
*/
static int _get_arg_lvnames_using_options(struct cmd_context *cmd,
int argc, char **argv,
struct dm_list *arg_vgnames,
struct dm_list *arg_lvnames,
struct dm_list *arg_tags)
{
/* Array with args which may provide vgname */
static const unsigned _opts_with_vgname[] = {
cachepool_ARG, poolmetadata_ARG, thinpool_ARG
};
unsigned i;
const char *pos_name = NULL;
const char *arg_name = NULL;
const char *pos_vgname = NULL;
const char *opt_vgname = NULL;
const char *pos_lvname = NULL;
const char *use_vgname = NULL;
char *vglv;
size_t vglv_sz;
if (argc != 1) {
log_error("One LV position arg is required.");
return ECMD_FAILED;
}
if (!(pos_name = dm_pool_strdup(cmd->mem, argv[0]))) {
log_error("string alloc failed.");
return ECMD_FAILED;
}
if (*pos_name == '@') {
if (!validate_tag(pos_name + 1)) {
log_error("Skipping invalid tag %s.", pos_name);
return ECMD_FAILED;
}
if (!str_list_add(cmd->mem, arg_tags,
dm_pool_strdup(cmd->mem, pos_name + 1))) {
log_error("strlist allocation failed.");
return ECMD_FAILED;
}
return ECMD_PROCESSED;
}
if (strchr(pos_name, '/')) {
/*
* This splits pos_name 'x/y' into pos_vgname 'x' and pos_lvname 'y'
* It skips repeated '/', e.g. x//y
* It also checks and fails for extra '/', e.g. x/y/z
*/
if (!(pos_vgname = _extract_vgname(cmd, pos_name, &pos_lvname)))
return_0;
use_vgname = pos_vgname;
} else
pos_lvname = pos_name;
/* Go through the list of options which can provide vgname */
for (i = 0; i < DM_ARRAY_SIZE(_opts_with_vgname); ++i) {
if ((arg_name = arg_str_value(cmd, _opts_with_vgname[i], NULL)) &&
strchr(arg_name, '/')) {
/* Combined VG/LV */
/* Don't care about opt lvname, only extract vgname. */
if (!(opt_vgname = _extract_vgname(cmd, arg_name, NULL)))
return_0;
/* Compare with already known vgname */
if (use_vgname) {
if (strcmp(use_vgname, opt_vgname)) {
log_error("VG name mismatch from %s arg (%s) and option arg (%s).",
pos_vgname ? "position" : "option",
use_vgname, opt_vgname);
return ECMD_FAILED;
}
} else
use_vgname = opt_vgname;
}
}
/* VG not specified as position nor as optional arg, so check for default VG */
if (!use_vgname && !(use_vgname = _default_vgname(cmd))) {
log_error("Cannot find VG name for LV %s.", pos_lvname);
return ECMD_FAILED;
}
if (!str_list_add(cmd->mem, arg_vgnames, dm_pool_strdup(cmd->mem, use_vgname))) {
log_error("strlist allocation failed.");
return ECMD_FAILED;
}
vglv_sz = strlen(use_vgname) + strlen(pos_lvname) + 2;
if (!(vglv = dm_pool_alloc(cmd->mem, vglv_sz)) ||
dm_snprintf(vglv, vglv_sz, "%s/%s", use_vgname, pos_lvname) < 0) {
log_error("vg/lv string alloc failed.");
return ECMD_FAILED;
}
if (!str_list_add(cmd->mem, arg_lvnames, vglv)) {
log_error("strlist allocation failed.");
return ECMD_FAILED;
}
return ECMD_PROCESSED;
}
static int _process_lv_vgnameid_list(struct cmd_context *cmd, uint32_t read_flags,
struct dm_list *vgnameids_to_process,
struct dm_list *arg_vgnames,
struct dm_list *arg_lvnames,
struct dm_list *arg_tags,
struct processing_handle *handle,
check_single_lv_fn_t check_single_lv,
process_single_lv_fn_t process_single_lv)
{
log_report_t saved_log_report_state = log_get_report_state();
char uuid[64] __attribute__((aligned(8)));
struct volume_group *vg;
struct volume_group *error_vg = NULL;
struct vgnameid_list *vgnl;
struct dm_str_list *sl;
struct dm_list *tags_arg;
struct dm_list lvnames;
uint32_t lockd_state = 0;
uint32_t error_flags = 0;
const char *vg_name;
const char *vg_uuid;
const char *vgn;
const char *lvn;
int ret_max = ECMD_PROCESSED;
int ret;
int skip;
int notfound;
int do_report_ret_code = 1;
log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_VG);
dm_list_iterate_items(vgnl, vgnameids_to_process) {
vg_name = vgnl->vg_name;
vg_uuid = vgnl->vgid;
skip = 0;
notfound = 0;
uuid[0] = '\0';
if (vg_uuid && !id_write_format((const struct id*)vg_uuid, uuid, sizeof(uuid)))
stack;
log_set_report_object_name_and_id(vg_name, uuid);
if (sigint_caught()) {
ret_max = ECMD_FAILED;
goto_out;
}
/*
* arg_lvnames contains some elements that are just "vgname"
* which means process all lvs in the vg. Other elements
* are "vgname/lvname" which means process only the select
* lvs in the vg.
*/
tags_arg = arg_tags;
dm_list_init(&lvnames); /* LVs to be processed in this VG */
dm_list_iterate_items(sl, arg_lvnames) {
vgn = sl->str;
lvn = strchr(vgn, '/');
if (!lvn && !strcmp(vgn, vg_name)) {
/* Process all LVs in this VG */
tags_arg = NULL;
dm_list_init(&lvnames);
break;
}
if (lvn && !strncmp(vgn, vg_name, strlen(vg_name)) &&
strlen(vg_name) == (size_t) (lvn - vgn)) {
if (!str_list_add(cmd->mem, &lvnames,
dm_pool_strdup(cmd->mem, lvn + 1))) {
log_error("strlist allocation failed.");
ret_max = ECMD_FAILED;
goto out;
}
}
}
log_very_verbose("Processing VG %s %s", vg_name, vg_uuid ? uuid : "");
if (!lockd_vg(cmd, vg_name, NULL, 0, &lockd_state)) {
ret_max = ECMD_FAILED;
report_log_ret_code(ret_max);
continue;
}
vg = vg_read(cmd, vg_name, vg_uuid, read_flags, lockd_state, &error_flags, &error_vg);
if (_ignore_vg(cmd, error_flags, error_vg, vg_name, arg_vgnames, read_flags, &skip, &notfound)) {
stack;
ret_max = ECMD_FAILED;
report_log_ret_code(ret_max);
if (error_vg)
unlock_and_release_vg(cmd, error_vg, vg_name);
goto endvg;
}
if (error_vg)
unlock_and_release_vg(cmd, error_vg, vg_name);
if (skip || notfound)
goto endvg;
ret = process_each_lv_in_vg(cmd, vg, &lvnames, tags_arg, 0,
handle, check_single_lv, process_single_lv);
if (ret != ECMD_PROCESSED)
stack;
report_log_ret_code(ret);
if (ret > ret_max)
ret_max = ret;
unlock_vg(cmd, vg, vg_name);
endvg:
release_vg(vg);
if (!lockd_vg(cmd, vg_name, "un", 0, &lockd_state))
stack;
log_set_report_object_name_and_id(NULL, NULL);
}
do_report_ret_code = 0;
out:
if (do_report_ret_code)
report_log_ret_code(ret_max);
log_restore_report_state(saved_log_report_state);
return ret_max;
}
/*
* Call process_single_lv() for each LV selected by the command line arguments.
*/
int process_each_lv(struct cmd_context *cmd,
int argc, char **argv,
const char *one_vgname, const char *one_lvname,
uint32_t read_flags,
struct processing_handle *handle,
check_single_lv_fn_t check_single_lv,
process_single_lv_fn_t process_single_lv)
{
log_report_t saved_log_report_state = log_get_report_state();
int handle_supplied = handle != NULL;
struct dm_list arg_tags; /* str_list */
struct dm_list arg_vgnames; /* str_list */
struct dm_list arg_lvnames; /* str_list */
struct dm_list vgnameids_on_system; /* vgnameid_list */
struct dm_list vgnameids_to_process; /* vgnameid_list */
int enable_all_vgs = (cmd->cname->flags & ALL_VGS_IS_DEFAULT);
int process_all_vgs_on_system = 0;
int ret_max = ECMD_PROCESSED;
int ret;
log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_LV);
/* Disable error in vg_read so we can print it from ignore_vg. */
cmd->vg_read_print_access_error = 0;
dm_list_init(&arg_tags);
dm_list_init(&arg_vgnames);
dm_list_init(&arg_lvnames);
dm_list_init(&vgnameids_on_system);
dm_list_init(&vgnameids_to_process);
/*
* Find any LVs, VGs or tags explicitly provided on the command line.
*/
if (cmd->cname->flags & GET_VGNAME_FROM_OPTIONS)
ret = _get_arg_lvnames_using_options(cmd, argc, argv, &arg_vgnames, &arg_lvnames, &arg_tags);
else
ret = _get_arg_lvnames(cmd, argc, argv, one_vgname, one_lvname, &arg_vgnames, &arg_lvnames, &arg_tags);
if (ret != ECMD_PROCESSED) {
ret_max = ret;
goto_out;
}
if (!handle && !(handle = init_processing_handle(cmd, NULL))) {
ret_max = ECMD_FAILED;
goto_out;
}
if (handle->internal_report_for_select && !handle->selection_handle &&
!init_selection_handle(cmd, handle, LVS)) {
ret_max = ECMD_FAILED;
goto_out;
}
/*
* Process all VGs on the system when:
* . tags are specified and all VGs need to be read to
* look for matching tags.
* . no VG names are specified and the command defaults
* to processing all VGs when none are specified.
* . no VG names are specified and the select option needs
* resolving.
*/
if (!dm_list_empty(&arg_tags))
process_all_vgs_on_system = 1;
else if (dm_list_empty(&arg_vgnames) && enable_all_vgs)
process_all_vgs_on_system = 1;
else if (dm_list_empty(&arg_vgnames) && handle->internal_report_for_select)
process_all_vgs_on_system = 1;
/*
* Needed for a current listing of the global VG namespace.
*/
if (process_all_vgs_on_system && !lock_global(cmd, "sh")) {
ret_max = ECMD_FAILED;
goto_out;
}
/*
* Scan all devices to populate lvmcache with initial
* list of PVs and VGs.
*/
lvmcache_label_scan(cmd);
/*
* A list of all VGs on the system is needed when:
* . processing all VGs on the system
* . A VG name is specified which may refer to one
* of multiple VGs on the system with that name.
*/
log_very_verbose("Obtaining the complete list of VGs before processing their LVs");
if (!lvmcache_get_vgnameids(cmd, &vgnameids_on_system, NULL, 0)) {
ret_max = ECMD_FAILED;
goto_out;
}
if (!dm_list_empty(&arg_vgnames)) {
/* This may remove entries from arg_vgnames or vgnameids_on_system. */
ret = _resolve_duplicate_vgnames(cmd, &arg_vgnames, &vgnameids_on_system);
if (ret > ret_max)
ret_max = ret;
if (dm_list_empty(&arg_vgnames) && dm_list_empty(&arg_tags)) {
ret_max = ECMD_FAILED;
goto_out;
}
}
if (dm_list_empty(&arg_vgnames) && dm_list_empty(&vgnameids_on_system)) {
/* FIXME Should be log_print, but suppressed for reporting cmds */
log_verbose("No volume groups found.");
ret_max = ECMD_PROCESSED;
goto out;
}
if (dm_list_empty(&arg_vgnames))
read_flags |= READ_OK_NOTFOUND;
/*
* When processing all VGs, vgnameids_on_system simply becomes
* vgnameids_to_process.
* When processing only specified VGs, then for each item in
* arg_vgnames, move the corresponding entry from
* vgnameids_on_system to vgnameids_to_process.
*/
if (process_all_vgs_on_system)
dm_list_splice(&vgnameids_to_process, &vgnameids_on_system);
else
_choose_vgs_to_process(cmd, &arg_vgnames, &vgnameids_on_system, &vgnameids_to_process);
ret = _process_lv_vgnameid_list(cmd, read_flags, &vgnameids_to_process, &arg_vgnames, &arg_lvnames,
&arg_tags, handle, check_single_lv, process_single_lv);
if (ret > ret_max)
ret_max = ret;
out:
if (!handle_supplied)
destroy_processing_handle(cmd, handle);
log_restore_report_state(saved_log_report_state);
return ret_max;
}
static int _get_arg_pvnames(struct cmd_context *cmd,
int argc, char **argv,
struct dm_list *arg_pvnames,
struct dm_list *arg_tags)
{
int opt = 0;
char *at_sign, *tagname;
char *arg_name;
int ret_max = ECMD_PROCESSED;
for (; opt < argc; opt++) {
arg_name = argv[opt];
dm_unescape_colons_and_at_signs(arg_name, NULL, &at_sign);
if (at_sign && (at_sign == arg_name)) {
tagname = at_sign + 1;
if (!validate_tag(tagname)) {
log_error("Skipping invalid tag %s.", tagname);
if (ret_max < EINVALID_CMD_LINE)
ret_max = EINVALID_CMD_LINE;
continue;
}
if (!str_list_add(cmd->mem, arg_tags,
dm_pool_strdup(cmd->mem, tagname))) {
log_error("strlist allocation failed.");
return ECMD_FAILED;
}
continue;
}
if (!str_list_add(cmd->mem, arg_pvnames,
dm_pool_strdup(cmd->mem, arg_name))) {
log_error("strlist allocation failed.");
return ECMD_FAILED;
}
}
return ret_max;
}
static int _get_arg_devices(struct cmd_context *cmd,
struct dm_list *arg_pvnames,
struct dm_list *arg_devices)
{
struct dm_str_list *sl;
struct device_id_list *dil;
int ret_max = ECMD_PROCESSED;
dm_list_iterate_items(sl, arg_pvnames) {
if (!(dil = dm_pool_alloc(cmd->mem, sizeof(*dil)))) {
log_error("device_id_list alloc failed.");
return ECMD_FAILED;
}
if (!(dil->dev = dev_cache_get(cmd, sl->str, cmd->filter))) {
log_error("Cannot use %s: %s", sl->str, devname_error_reason(sl->str));
ret_max = ECMD_FAILED;
} else {
strncpy(dil->pvid, dil->dev->pvid, ID_LEN);
dm_list_add(arg_devices, &dil->list);
}
}
return ret_max;
}
static int _get_all_devices(struct cmd_context *cmd,
int process_all_devices,
struct dm_list *all_devices)
{
struct dev_iter *iter;
struct device *dev;
struct device_id_list *dil;
struct hint *hint;
int r = ECMD_FAILED;
/*
* If command is using hints and is only looking for PVs
* (not all devices), then we can use only devs from hints.
*/
if (!process_all_devices && !dm_list_empty(&cmd->hints)) {
log_debug("Getting list of all devices from hints");
dm_list_iterate_items(hint, &cmd->hints) {
if (!(dev = dev_cache_get(cmd, hint->name, NULL)))
continue;
if (!(dil = dm_pool_alloc(cmd->mem, sizeof(*dil)))) {
log_error("device_id_list alloc failed.");
return ECMD_FAILED;
}
strncpy(dil->pvid, hint->pvid, ID_LEN);
dil->dev = dev;
dm_list_add(all_devices, &dil->list);
}
return ECMD_PROCESSED;
}
log_debug("Getting list of all devices from system");
if (!(iter = dev_iter_create(cmd->filter, 1))) {
log_error("dev_iter creation failed.");
return ECMD_FAILED;
}
while ((dev = dev_iter_get(cmd, iter))) {
if (!(dil = dm_pool_alloc(cmd->mem, sizeof(*dil)))) {
log_error("device_id_list alloc failed.");
goto out;
}
strncpy(dil->pvid, dev->pvid, ID_LEN);
dil->dev = dev;
dm_list_add(all_devices, &dil->list);
}
r = ECMD_PROCESSED;
out:
dev_iter_destroy(iter);
return r;
}
static int _device_list_remove(struct dm_list *devices, struct device *dev)
{
struct device_id_list *dil;
dm_list_iterate_items(dil, devices) {
if (dil->dev == dev) {
dm_list_del(&dil->list);
return 1;
}
}
return 0;
}
static struct device_id_list *_device_list_find_dev(struct dm_list *devices, struct device *dev)
{
struct device_id_list *dil;
dm_list_iterate_items(dil, devices) {
if (dil->dev == dev)
return dil;
}
return NULL;
}
static int _process_device_list(struct cmd_context *cmd, struct dm_list *all_devices,
struct processing_handle *handle,
process_single_pv_fn_t process_single_pv)
{
struct physical_volume pv_dummy;
struct physical_volume *pv;
struct device_id_list *dil;
int ret_max = ECMD_PROCESSED;
int ret = 0;
log_debug("Processing devices that are not PVs");
/*
* Pretend that each device is a PV with dummy values.
* FIXME Formalise this extension or find an alternative.
*/
dm_list_iterate_items(dil, all_devices) {
if (sigint_caught())
return_ECMD_FAILED;
memset(&pv_dummy, 0, sizeof(pv_dummy));
dm_list_init(&pv_dummy.tags);
dm_list_init(&pv_dummy.segments);
pv_dummy.dev = dil->dev;
pv = &pv_dummy;
log_very_verbose("Processing device %s.", dev_name(dil->dev));
ret = process_single_pv(cmd, NULL, pv, handle);
if (ret > ret_max)
ret_max = ret;
}
return ECMD_PROCESSED;
}
static int _process_duplicate_pvs(struct cmd_context *cmd,
struct dm_list *all_devices,
struct dm_list *arg_devices,
int process_all_devices,
struct processing_handle *handle,
process_single_pv_fn_t process_single_pv)
{
struct device_id_list *dil;
struct device_list *devl;
struct dm_list unused_duplicate_devs;
struct lvmcache_info *info;
const char *vgname;
const char *vgid;
int ret_max = ECMD_PROCESSED;
int ret = 0;
struct physical_volume dummy_pv = {
.tags = DM_LIST_HEAD_INIT(dummy_pv.tags),
.segments= DM_LIST_HEAD_INIT(dummy_pv.segments),
};
struct format_instance dummy_fid = {
.metadata_areas_in_use = DM_LIST_HEAD_INIT(dummy_fid.metadata_areas_in_use),
.metadata_areas_ignored = DM_LIST_HEAD_INIT(dummy_fid.metadata_areas_ignored),
};
struct volume_group dummy_vg = {
.fid = &dummy_fid,
.name = "",
.system_id = (char *) "",
.pvs = DM_LIST_HEAD_INIT(dummy_vg.pvs),
.lvs = DM_LIST_HEAD_INIT(dummy_vg.lvs),
.historical_lvs = DM_LIST_HEAD_INIT(dummy_vg.historical_lvs),
.tags = DM_LIST_HEAD_INIT(dummy_vg.tags),
};
dm_list_init(&unused_duplicate_devs);
if (!lvmcache_get_unused_duplicates(cmd, &unused_duplicate_devs))
return_ECMD_FAILED;
dm_list_iterate_items(devl, &unused_duplicate_devs) {
/* Duplicates are displayed if -a is used or the dev is named as an arg. */
_device_list_remove(all_devices, devl->dev);
if (!process_all_devices && dm_list_empty(arg_devices))
continue;
if ((dil = _device_list_find_dev(arg_devices, devl->dev)))
_device_list_remove(arg_devices, devl->dev);
if (!process_all_devices && !dil)
continue;
if (!(cmd->cname->flags & ENABLE_DUPLICATE_DEVS))
continue;
/*
* Use the cached VG from the preferred device for the PV,
* the vg is only used to display the VG name.
*
* This VG from lvmcache was not read from the duplicate
* dev being processed here, but from the preferred dev
* in lvmcache.
*
* When a duplicate PV is displayed, the reporting fields
* that come from the VG metadata are not shown, because
* the dev is not a part of the VG, the dev for the
* preferred PV is (also the VG metadata in lvmcache is
* not from the duplicate dev, but from the preferred dev).
*/
log_very_verbose("Processing duplicate device %s.", dev_name(devl->dev));
/*
* Don't pass dev to lvmcache_info_from_pvid because we looking
* for the chosen/preferred dev for this pvid.
*/
if (!(info = lvmcache_info_from_pvid(devl->dev->pvid, NULL, 0))) {
log_error(INTERNAL_ERROR "No info for pvid");
return_ECMD_FAILED;
}
vgname = lvmcache_vgname_from_info(info);
vgid = vgname ? lvmcache_vgid_from_vgname(cmd, vgname) : NULL;
dummy_pv.dev = devl->dev;
dummy_pv.fmt = lvmcache_fmt_from_info(info);
dummy_vg.name = vgname ?: "";
if (vgid)
memcpy(&dummy_vg.id, vgid, ID_LEN);
else
memset(&dummy_vg.id, 0, sizeof(dummy_vg.id));
ret = process_single_pv(cmd, &dummy_vg, &dummy_pv, handle);
if (ret > ret_max)
ret_max = ret;
if (sigint_caught())
return_ECMD_FAILED;
}
return ECMD_PROCESSED;
}
static int _process_pvs_in_vg(struct cmd_context *cmd,
struct volume_group *vg,
struct dm_list *all_devices,
struct dm_list *arg_devices,
struct dm_list *arg_tags,
int process_all_pvs,
int process_all_devices,
int skip,
uint32_t error_flags,
struct processing_handle *handle,
process_single_pv_fn_t process_single_pv)
{
log_report_t saved_log_report_state = log_get_report_state();
char pv_uuid[64] __attribute__((aligned(8)));
char vg_uuid[64] __attribute__((aligned(8)));
int handle_supplied = handle != NULL;
struct physical_volume *pv;
struct pv_list *pvl;
struct device_id_list *dil;
struct device_list *devl;
struct dm_list outdated_devs;
const char *pv_name;
int process_pv;
int do_report_ret_code = 1;
int ret_max = ECMD_PROCESSED;
int ret = 0;
dm_list_init(&outdated_devs);
log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_PV);
vg_uuid[0] = '\0';
if (!id_write_format(&vg->id, vg_uuid, sizeof(vg_uuid)))
stack;
if (!handle && (!(handle = init_processing_handle(cmd, NULL)))) {
ret_max = ECMD_FAILED;
goto_out;
}
if (handle->internal_report_for_select && !handle->selection_handle &&
!init_selection_handle(cmd, handle, PVS)) {
ret_max = ECMD_FAILED;
goto_out;
}
if (!is_orphan_vg(vg->name))
log_set_report_object_group_and_group_id(vg->name, vg_uuid);
dm_list_iterate_items(pvl, &vg->pvs) {
pv = pvl->pv;
pv_name = pv_dev_name(pv);
pv_uuid[0]='\0';
if (!id_write_format(&pv->id, pv_uuid, sizeof(pv_uuid)))
stack;
log_set_report_object_name_and_id(pv_name, pv_uuid);
if (sigint_caught()) {
ret_max = ECMD_FAILED;
goto_out;
}
process_pv = process_all_pvs;
dil = NULL;
/* Remove each arg_devices entry as it is processed. */
if (arg_devices && !dm_list_empty(arg_devices)) {
if ((dil = _device_list_find_dev(arg_devices, pv->dev)))
_device_list_remove(arg_devices, dil->dev);
}
if (!process_pv && dil)
process_pv = 1;
if (!process_pv && !dm_list_empty(arg_tags) &&
str_list_match_list(arg_tags, &pv->tags, NULL))
process_pv = 1;
process_pv = process_pv && select_match_pv(cmd, handle, vg, pv) && _select_matches(handle);
/*
* The command has asked to process a specific PV
* named on the command line, but the VG containing
* that PV cannot be accessed. In this case report
* and return an error. If the inaccessible PV is
* not explicitly named on the command line, it is
* silently skipped.
*/
if (process_pv && skip && dil && error_flags) {
if (error_flags & FAILED_EXPORTED)
log_error("Cannot use PV %s in exported VG %s.", pv_name, vg->name);
if (error_flags & FAILED_SYSTEMID)
log_error("Cannot use PV %s in foreign VG %s.", pv_name, vg->name);
if (error_flags & (FAILED_LOCK_TYPE | FAILED_LOCK_MODE))
log_error("Cannot use PV %s in shared VG %s.", pv_name, vg->name);
ret_max = ECMD_FAILED;
}
if (process_pv) {
if (skip)
log_verbose("Skipping PV %s in VG %s.", pv_name, vg->name);
else
log_very_verbose("Processing PV %s in VG %s.", pv_name, vg->name);
_device_list_remove(all_devices, pv->dev);
/*
* pv->dev should be found in all_devices unless it's a
* case of a "missing device". Previously there have
* been cases where we needed to skip processing the PV
* if pv->dev was not found in all_devices to avoid
* processing a PV twice, i.e. when the PV had no MDAs
* it would be seen once in its real VG and again
* wrongly in the orphan VG. This no longer happens.
*/
if (!skip) {
ret = process_single_pv(cmd, vg, pv, handle);
if (ret != ECMD_PROCESSED)
stack;
report_log_ret_code(ret);
if (ret > ret_max)
ret_max = ret;
}
}
/*
* When processing only specific PVs, we can quit once they've all been found.
*/
if (!process_all_pvs && dm_list_empty(arg_tags) &&
(!arg_devices || dm_list_empty(arg_devices)))
break;
log_set_report_object_name_and_id(NULL, NULL);
}
if (!is_orphan_vg(vg->name))
lvmcache_get_outdated_devs(cmd, vg->name, (const char *)&vg->id, &outdated_devs);
dm_list_iterate_items(devl, &outdated_devs)
_device_list_remove(all_devices, devl->dev);
do_report_ret_code = 0;
out:
if (do_report_ret_code)
report_log_ret_code(ret_max);
log_set_report_object_name_and_id(NULL, NULL);
log_set_report_object_group_and_group_id(NULL, NULL);
if (!handle_supplied)
destroy_processing_handle(cmd, handle);
log_restore_report_state(saved_log_report_state);
return ret_max;
}
/*
* Iterate through all PVs in each listed VG. Process a PV if
* its dev or tag matches arg_devices or arg_tags. If both
* arg_devices and arg_tags are empty, then process all PVs.
* No PV should be processed more than once.
*
* Each PV is removed from arg_devices and all_devices when it is
* processed. Any names remaining in arg_devices were not found, and
* should produce an error. Any devices remaining in all_devices were
* not found and should be processed by process_device_list().
*/
static int _process_pvs_in_vgs(struct cmd_context *cmd, uint32_t read_flags,
struct dm_list *all_vgnameids,
struct dm_list *all_devices,
struct dm_list *arg_devices,
struct dm_list *arg_tags,
int process_all_pvs,
int process_all_devices,
struct processing_handle *handle,
process_single_pv_fn_t process_single_pv)
{
log_report_t saved_log_report_state = log_get_report_state();
char uuid[64] __attribute__((aligned(8)));
struct volume_group *vg;
struct volume_group *error_vg;
struct vgnameid_list *vgnl;
const char *vg_name;
const char *vg_uuid;
uint32_t lockd_state = 0;
uint32_t error_flags = 0;
int ret_max = ECMD_PROCESSED;
int ret;
int skip;
int notfound;
int do_report_ret_code = 1;
log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_VG);
dm_list_iterate_items(vgnl, all_vgnameids) {
vg_name = vgnl->vg_name;
vg_uuid = vgnl->vgid;
skip = 0;
notfound = 0;
uuid[0] = '\0';
if (is_orphan_vg(vg_name)) {
log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_ORPHAN);
log_set_report_object_name_and_id(vg_name + sizeof(VG_ORPHANS), uuid);
} else {
if (vg_uuid && !id_write_format((const struct id*)vg_uuid, uuid, sizeof(uuid)))
stack;
log_set_report_object_name_and_id(vg_name, uuid);
}
if (sigint_caught()) {
ret_max = ECMD_FAILED;
goto_out;
}
if (!lockd_vg(cmd, vg_name, NULL, 0, &lockd_state)) {
ret_max = ECMD_FAILED;
report_log_ret_code(ret_max);
continue;
}
log_debug("Processing PVs in VG %s", vg_name);
error_flags = 0;
vg = vg_read(cmd, vg_name, vg_uuid, read_flags, lockd_state, &error_flags, &error_vg);
if (_ignore_vg(cmd, error_flags, error_vg, vg_name, NULL, read_flags, &skip, &notfound)) {
stack;
ret_max = ECMD_FAILED;
report_log_ret_code(ret_max);
if (!skip)
goto endvg;
/* Drop through to eliminate unmpermitted PVs from the devices list */
}
if (notfound)
goto endvg;
/*
* Don't call "continue" when skip is set, because we need to remove
* error_vg->pvs entries from devices list.
*/
ret = _process_pvs_in_vg(cmd, vg ? vg : error_vg, all_devices, arg_devices, arg_tags,
process_all_pvs, process_all_devices, skip, error_flags,
handle, process_single_pv);
if (ret != ECMD_PROCESSED)
stack;
report_log_ret_code(ret);
if (ret > ret_max)
ret_max = ret;
if (!skip)
unlock_vg(cmd, vg, vg->name);
endvg:
if (error_vg)
unlock_and_release_vg(cmd, error_vg, vg_name);
release_vg(vg);
if (!lockd_vg(cmd, vg_name, "un", 0, &lockd_state))
stack;
/* Quit early when possible. */
if (!process_all_pvs && dm_list_empty(arg_tags) && dm_list_empty(arg_devices)) {
do_report_ret_code = 0;
goto out;
}
log_set_report_object_name_and_id(NULL, NULL);
}
do_report_ret_code = 0;
out:
if (do_report_ret_code)
report_log_ret_code(ret_max);
log_restore_report_state(saved_log_report_state);
return ret_max;
}
int process_each_pv(struct cmd_context *cmd,
int argc, char **argv, const char *only_this_vgname,
int all_is_set, uint32_t read_flags,
struct processing_handle *handle,
process_single_pv_fn_t process_single_pv)
{
log_report_t saved_log_report_state = log_get_report_state();
struct dm_list arg_tags; /* str_list */
struct dm_list arg_pvnames; /* str_list */
struct dm_list arg_devices; /* device_id_list */
struct dm_list all_vgnameids; /* vgnameid_list */
struct dm_list all_devices; /* device_id_list */
struct device_id_list *dil;
int process_all_pvs;
int process_all_devices;
int ret_max = ECMD_PROCESSED;
int ret;
log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_PV);
log_debug("Processing each PV");
/*
* When processing a specific VG name, warn if it's inconsistent and
* print an error if it's not found. Otherwise we're processing all
* VGs, in which case the command doesn't care if the VG is inconsisent
* or not found; it just wants to skip that VG. (It may be not found
* if it was removed between creating the list of all VGs and then
* processing each VG.
*/
if (only_this_vgname)
read_flags |= READ_WARN_INCONSISTENT;
else
read_flags |= READ_OK_NOTFOUND;
/* Disable error in vg_read so we can print it from ignore_vg. */
cmd->vg_read_print_access_error = 0;
dm_list_init(&arg_tags);
dm_list_init(&arg_pvnames);
dm_list_init(&arg_devices);
dm_list_init(&all_vgnameids);
dm_list_init(&all_devices);
/*
* Create two lists from argv:
* arg_pvnames: pvs explicitly named in argv
* arg_tags: tags explicitly named in argv
*
* Then convert arg_pvnames, which are free-form, user-specified,
* names/paths into arg_devices which can be used to match below.
*/
if ((ret = _get_arg_pvnames(cmd, argc, argv, &arg_pvnames, &arg_tags)) != ECMD_PROCESSED) {
ret_max = ret;
goto_out;
}
if ((cmd->cname->flags & DISALLOW_TAG_ARGS) && !dm_list_empty(&arg_tags)) {
log_error("Tags cannot be used with this command.");
return ECMD_FAILED;
}
process_all_pvs = dm_list_empty(&arg_pvnames) && dm_list_empty(&arg_tags);
process_all_devices = process_all_pvs && (cmd->cname->flags & ENABLE_ALL_DEVS) && all_is_set;
/* Needed for a current listing of the global VG namespace. */
if (!only_this_vgname && !lock_global(cmd, "sh")) {
ret_max = ECMD_FAILED;
goto_out;
}
if (!(read_flags & PROCESS_SKIP_SCAN))
lvmcache_label_scan(cmd);
if (!lvmcache_get_vgnameids(cmd, &all_vgnameids, only_this_vgname, 1)) {
ret_max = ret;
goto_out;
}
/*
* If the caller wants to process all devices (not just PVs), then all PVs
* from all VGs are processed first, removing them from all_devices. Then
* any devs remaining in all_devices are processed.
*/
if ((ret = _get_all_devices(cmd, process_all_devices, &all_devices)) != ECMD_PROCESSED) {
ret_max = ret;
goto_out;
}
if ((ret = _get_arg_devices(cmd, &arg_pvnames, &arg_devices)) != ECMD_PROCESSED)
/* get_arg_devices reports the error for any PV names not found. */
ret_max = ECMD_FAILED;
ret = _process_pvs_in_vgs(cmd, read_flags, &all_vgnameids, &all_devices,
&arg_devices, &arg_tags,
process_all_pvs, process_all_devices,
handle, process_single_pv);
if (ret != ECMD_PROCESSED)
stack;
if (ret > ret_max)
ret_max = ret;
/*
* Process the list of unused duplicate devs so they can be shown by
* report/display commands. These are the devices that were not chosen
* to be used in lvmcache because another device with the same PVID was
* preferred. The unused duplicate devs are not seen by
* _process_pvs_in_vgs, which only sees the preferred device for the
* PVID.
*
* The main purpose in reporting/displaying the unused duplicate PVs
* here is so that they do not appear to be unused/free devices or
* orphans.
*
* We do not allow modifying the unused duplicate PVs. To modify a
* non-preferred duplicate PV, e.g. pvchange -u, a filter needs to be
* used with the command to exclude the other devices with the same
* PVID. This results in the command seeing only the one device with
* the PVID and allows it to be changed. (If the duplicates actually
* represent the same underlying storage, these precautions are
* unnecessary, but lvm can't tell when the duplicates are different
* paths to the same storage or different underlying storage.)
*
* Even the preferred duplicate PV in lvmcache is limitted from being
* modified (by allow_changes_with_duplicate_pvs setting), because lvm
* cannot be sure that the preferred duplicate device is the correct one,
* e.g. if a VG has two PVs, and both PVs are cloned, lvm might prefer
* one of the original PVs and one of the cloned PVs, pairing them
* together as the VG. Any changes on the VG or PVs in that state would
* end up changing one of the original PVs and one of the cloned PVs.
*
* vgimportclone of the two cloned PVs changes their PV UUIDs and gives
* them a new VG name.
*/
ret = _process_duplicate_pvs(cmd, &all_devices, &arg_devices, process_all_devices,
handle, process_single_pv);
if (ret != ECMD_PROCESSED)
stack;
if (ret > ret_max)
ret_max = ret;
dm_list_iterate_items(dil, &arg_devices) {
log_error("Failed to find physical volume \"%s\".", dev_name(dil->dev));
ret_max = ECMD_FAILED;
}
if (!process_all_devices)
goto out;
ret = _process_device_list(cmd, &all_devices, handle, process_single_pv);
if (ret != ECMD_PROCESSED)
stack;
if (ret > ret_max)
ret_max = ret;
out:
log_restore_report_state(saved_log_report_state);
return ret_max;
}
int process_each_pv_in_vg(struct cmd_context *cmd, struct volume_group *vg,
struct processing_handle *handle,
process_single_pv_fn_t process_single_pv)
{
log_report_t saved_log_report_state = log_get_report_state();
char pv_uuid[64] __attribute__((aligned(8)));
char vg_uuid[64] __attribute__((aligned(8)));
int whole_selected = 0;
int ret_max = ECMD_PROCESSED;
int ret;
int do_report_ret_code = 1;
struct pv_list *pvl;
log_set_report_object_type(LOG_REPORT_OBJECT_TYPE_PV);
vg_uuid[0] = '\0';
if (!id_write_format(&vg->id, vg_uuid, sizeof(vg_uuid)))
stack;
if (!is_orphan_vg(vg->name))
log_set_report_object_group_and_group_id(vg->name, vg_uuid);
dm_list_iterate_items(pvl, &vg->pvs) {
pv_uuid[0] = '\0';
if (!id_write_format(&pvl->pv->id, pv_uuid, sizeof(pv_uuid)))
stack;
log_set_report_object_name_and_id(pv_dev_name(pvl->pv), pv_uuid);
if (sigint_caught()) {
ret_max = ECMD_FAILED;
goto_out;
}
ret = process_single_pv(cmd, vg, pvl->pv, handle);
_update_selection_result(handle, &whole_selected);
if (ret != ECMD_PROCESSED)
stack;
report_log_ret_code(ret);
if (ret > ret_max)
ret_max = ret;
log_set_report_object_name_and_id(NULL, NULL);
}
_set_final_selection_result(handle, whole_selected);
do_report_ret_code = 0;
out:
if (do_report_ret_code)
report_log_ret_code(ret_max);
log_restore_report_state(saved_log_report_state);
return ret_max;
}
int lvremove_single(struct cmd_context *cmd, struct logical_volume *lv,
struct processing_handle *handle __attribute__((unused)))
{
/*
* Single force is equivalent to single --yes
* Even multiple --yes are equivalent to single --force
* When we require -ff it cannot be replaced with -f -y
*/
force_t force = (force_t) arg_count(cmd, force_ARG)
? : (arg_is_set(cmd, yes_ARG) ? DONT_PROMPT : PROMPT);
if (!lv_remove_with_dependencies(cmd, lv, force, 0))
return_ECMD_FAILED;
return ECMD_PROCESSED;
}
int pvcreate_params_from_args(struct cmd_context *cmd, struct pvcreate_params *pp)
{
pp->yes = arg_count(cmd, yes_ARG);
pp->force = (force_t) arg_count(cmd, force_ARG);
if (arg_int_value(cmd, labelsector_ARG, 0) >= LABEL_SCAN_SECTORS) {
log_error("labelsector must be less than %lu.",
LABEL_SCAN_SECTORS);
return 0;
}
pp->pva.label_sector = arg_int64_value(cmd, labelsector_ARG,
DEFAULT_LABELSECTOR);
if (arg_is_set(cmd, metadataignore_ARG))
pp->pva.metadataignore = arg_int_value(cmd, metadataignore_ARG,
DEFAULT_PVMETADATAIGNORE);
else
pp->pva.metadataignore = find_config_tree_bool(cmd, metadata_pvmetadataignore_CFG, NULL);
if (arg_is_set(cmd, pvmetadatacopies_ARG) &&
!arg_int_value(cmd, pvmetadatacopies_ARG, -1) &&
pp->pva.metadataignore) {
log_error("metadataignore only applies to metadatacopies > 0.");
return 0;
}
pp->zero = arg_int_value(cmd, zero_ARG, 1);
if (arg_sign_value(cmd, dataalignment_ARG, SIGN_NONE) == SIGN_MINUS) {
log_error("Physical volume data alignment may not be negative.");
return 0;
}
pp->pva.data_alignment = arg_uint64_value(cmd, dataalignment_ARG, UINT64_C(0));
if (pp->pva.data_alignment > UINT32_MAX) {
log_error("Physical volume data alignment is too big.");
return 0;
}
if (arg_sign_value(cmd, dataalignmentoffset_ARG, SIGN_NONE) == SIGN_MINUS) {
log_error("Physical volume data alignment offset may not be negative.");
return 0;
}
pp->pva.data_alignment_offset = arg_uint64_value(cmd, dataalignmentoffset_ARG, UINT64_C(0));
if (pp->pva.data_alignment_offset > UINT32_MAX) {
log_error("Physical volume data alignment offset is too big.");
return 0;
}
if ((pp->pva.data_alignment + pp->pva.data_alignment_offset) &&
(pp->pva.pe_start != PV_PE_START_CALC)) {
if ((pp->pva.data_alignment ? pp->pva.pe_start % pp->pva.data_alignment : pp->pva.pe_start) != pp->pva.data_alignment_offset) {
log_warn("WARNING: Ignoring data alignment %s"
" incompatible with restored pe_start value %s.",
display_size(cmd, pp->pva.data_alignment + pp->pva.data_alignment_offset),
display_size(cmd, pp->pva.pe_start));
pp->pva.data_alignment = 0;
pp->pva.data_alignment_offset = 0;
}
}
if (arg_sign_value(cmd, metadatasize_ARG, SIGN_NONE) == SIGN_MINUS) {
log_error("Metadata size may not be negative.");
return 0;
}
if (arg_sign_value(cmd, bootloaderareasize_ARG, SIGN_NONE) == SIGN_MINUS) {
log_error("Bootloader area size may not be negative.");
return 0;
}
pp->pva.pvmetadatasize = arg_uint64_value(cmd, metadatasize_ARG, UINT64_C(0));
if (!pp->pva.pvmetadatasize) {
pp->pva.pvmetadatasize = find_config_tree_int(cmd, metadata_pvmetadatasize_CFG, NULL);
if (!pp->pva.pvmetadatasize)
pp->pva.pvmetadatasize = get_default_pvmetadatasize_sectors();
}
pp->pva.pvmetadatacopies = arg_int_value(cmd, pvmetadatacopies_ARG, -1);
if (pp->pva.pvmetadatacopies < 0)
pp->pva.pvmetadatacopies = find_config_tree_int(cmd, metadata_pvmetadatacopies_CFG, NULL);
pp->pva.ba_size = arg_uint64_value(cmd, bootloaderareasize_ARG, pp->pva.ba_size);
return 1;
}
enum {
PROMPT_PVCREATE_PV_IN_VG = 1,
PROMPT_PVREMOVE_PV_IN_VG = 2,
PROMPT_PVCREATE_DEV_SIZE = 4,
};
enum {
PROMPT_ANSWER_NO = 1,
PROMPT_ANSWER_YES = 2
};
/*
* When a prompt entry is created, save any strings or info
* in this struct that are needed for the prompt messages.
* The VG/PV structs are not be available when the prompt
* is run.
*/
struct pvcreate_prompt {
struct dm_list list;
uint32_t type;
uint64_t size;
uint64_t new_size;
const char *pv_name;
const char *vg_name;
struct device *dev;
int answer;
unsigned abort_command : 1;
unsigned vg_name_unknown : 1;
};
struct pvcreate_device {
struct dm_list list;
const char *name;
struct device *dev;
char pvid[ID_LEN + 1];
const char *vg_name;
int wiped;
unsigned is_not_pv : 1; /* device is not a PV */
unsigned is_orphan_pv : 1; /* device is an orphan PV */
unsigned is_vg_pv : 1; /* device is a PV used in a VG */
unsigned is_used_unknown_pv : 1; /* device is a PV used in an unknown VG */
};
/*
* If a PV is in a VG, and pvcreate or pvremove is run on it:
*
* pvcreate|pvremove -f : fails
* pvcreate|pvremove -y : fails
* pvcreate|pvremove -f -y : fails
* pvcreate|pvremove -ff : get y/n prompt
* pvcreate|pvremove -ff -y : succeeds
*
* FIXME: there are a lot of various phrasings used depending on the
* command and specific case. Find some similar way to phrase these.
*/
static void _check_pvcreate_prompt(struct cmd_context *cmd,
struct pvcreate_params *pp,
struct pvcreate_prompt *prompt,
int ask)
{
const char *vgname = prompt->vg_name ? prompt->vg_name : "<unknown>";
const char *pvname = prompt->pv_name;
int answer_yes = 0;
int answer_no = 0;
/* The VG name can be unknown when the PV is used but metadata is not available */
if (prompt->type & PROMPT_PVCREATE_PV_IN_VG) {
if (pp->force != DONT_PROMPT_OVERRIDE) {
answer_no = 1;
if (prompt->vg_name_unknown) {
log_error("PV %s is used by a VG but its metadata is missing.", pvname);
log_error("Can't initialize PV '%s' without -ff.", pvname);
} else if (!strcmp(command_name(cmd), "pvcreate")) {
log_error("Can't initialize physical volume \"%s\" of volume group \"%s\" without -ff", pvname, vgname);
} else {
log_error("Physical volume '%s' is already in volume group '%s'", pvname, vgname);
log_error("Unable to add physical volume '%s' to volume group '%s'", pvname, vgname);
}
} else if (pp->yes) {
answer_yes = 1;
} else if (ask) {
if (yes_no_prompt("Really INITIALIZE physical volume \"%s\" of volume group \"%s\" [y/n]? ", pvname, vgname) == 'n') {
answer_no = 1;
} else {
answer_yes = 1;
log_warn("WARNING: Forcing physical volume creation on %s of volume group \"%s\"", pvname, vgname);
}
}
}
if (prompt->type & PROMPT_PVCREATE_DEV_SIZE) {
if (pp->yes) {
log_warn("WARNING: Faking size of PV %s. Don't write outside real device.", pvname);
answer_yes = 1;
} else if (ask) {
if (prompt->new_size != prompt->size) {
if (yes_no_prompt("WARNING: %s: device size %s does not match requested size %s. Proceed? [y/n]: ", pvname,
display_size(cmd, prompt->size),
display_size(cmd, prompt->new_size)) == 'n') {
answer_no = 1;
} else {
answer_yes = 1;
log_warn("WARNING: Faking size of PV %s. Don't write outside real device.", pvname);
}
}
}
}
if (prompt->type & PROMPT_PVREMOVE_PV_IN_VG) {
if (pp->force != DONT_PROMPT_OVERRIDE) {
answer_no = 1;
if (prompt->vg_name_unknown)
log_error("PV %s is used by a VG but its metadata is missing.", pvname);
else
log_error("PV %s is used by VG %s so please use vgreduce first.", pvname, vgname);
log_error("(If you are certain you need pvremove, then confirm by using --force twice.)");
} else if (pp->yes) {
log_warn("WARNING: PV %s is used by VG %s.", pvname, vgname);
answer_yes = 1;
} else if (ask) {
log_warn("WARNING: PV %s is used by VG %s.", pvname, vgname);
if (yes_no_prompt("Really WIPE LABELS from physical volume \"%s\" of volume group \"%s\" [y/n]? ", pvname, vgname) == 'n')
answer_no = 1;
else
answer_yes = 1;
}
}
if (answer_yes && answer_no) {
log_warn("WARNING: prompt answer yes is overriden by prompt answer no.");
answer_yes = 0;
}
/*
* no answer is valid when not asking the user.
* the caller uses this to check if all the prompts
* can be answered automatically without prompts.
*/
if (!ask && !answer_yes && !answer_no)
return;
if (answer_no)
prompt->answer = PROMPT_ANSWER_NO;
else if (answer_yes)
prompt->answer = PROMPT_ANSWER_YES;
/*
* Mostly historical messages. Other messages above could be moved
* here to separate the answer logic from the messages.
*/
if ((prompt->type & (PROMPT_PVCREATE_DEV_SIZE | PROMPT_PVCREATE_PV_IN_VG)) &&
(prompt->answer == PROMPT_ANSWER_NO))
log_error("%s: physical volume not initialized.", pvname);
if ((prompt->type & PROMPT_PVREMOVE_PV_IN_VG) &&
(prompt->answer == PROMPT_ANSWER_NO))
log_error("%s: physical volume label not removed.", pvname);
if ((prompt->type & PROMPT_PVREMOVE_PV_IN_VG) &&
(prompt->answer == PROMPT_ANSWER_YES) &&
(pp->force == DONT_PROMPT_OVERRIDE))
log_warn("WARNING: Wiping physical volume label from %s of volume group \"%s\".", pvname, vgname);
}
static struct pvcreate_device *_pvcreate_list_find_dev(struct dm_list *devices, struct device *dev)
{
struct pvcreate_device *pd;
dm_list_iterate_items(pd, devices) {
if (pd->dev == dev)
return pd;
}
return NULL;
}
static struct pvcreate_device *_pvcreate_list_find_name(struct dm_list *devices, const char *name)
{
struct pvcreate_device *pd;
dm_list_iterate_items(pd, devices) {
if (!strcmp(pd->name, name))
return pd;
}
return NULL;
}
static int _pvcreate_check_used(struct cmd_context *cmd,
struct pvcreate_params *pp,
struct pvcreate_device *pd)
{
struct pvcreate_prompt *prompt;
uint64_t size = 0;
uint64_t new_size = 0;
int need_size_prompt = 0;
int need_vg_prompt = 0;
struct lvmcache_info *info;
const char *vgname;
log_debug("Checking %s for pvcreate %.32s.",
dev_name(pd->dev), pd->dev->pvid[0] ? pd->dev->pvid : "");
if (!pd->dev->pvid[0]) {
log_debug("Check pvcreate arg %s no PVID found", dev_name(pd->dev));
pd->is_not_pv = 1;
return 1;
}
/*
* Don't allow using a device with duplicates.
*/
if (lvmcache_pvid_in_unused_duplicates(pd->dev->pvid)) {
log_error("Cannot use device %s with duplicates.", dev_name(pd->dev));
dm_list_move(&pp->arg_fail, &pd->list);
return 0;
}
if (!(info = lvmcache_info_from_pvid(pd->dev->pvid, pd->dev, 0))) {
log_error("Failed to read lvm info for %s PVID %s.", dev_name(pd->dev), pd->dev->pvid);
dm_list_move(&pp->arg_fail, &pd->list);
return 0;
}
vgname = lvmcache_vgname_from_info(info);
/*
* What kind of device is this: an orphan PV, an uninitialized/unused
* device, a PV used in a VG.
*/
if (vgname && !is_orphan_vg(vgname)) {
/* Device is a PV used in a VG. */
log_debug("Check pvcreate arg %s found vg %s.", dev_name(pd->dev), vgname);
pd->is_vg_pv = 1;
pd->vg_name = dm_pool_strdup(cmd->mem, vgname);
} else if (!vgname || (vgname && is_orphan_vg(vgname))) {
uint32_t ext_flags = lvmcache_ext_flags(info);
if (ext_flags & PV_EXT_USED) {
/* Device is used in an unknown VG. */
log_debug("Check pvcreate arg %s found EXT_USED flag.", dev_name(pd->dev));
pd->is_used_unknown_pv = 1;
} else {
/* Device is an orphan PV. */
log_debug("Check pvcreate arg %s is orphan.", dev_name(pd->dev));
pd->is_orphan_pv = 1;
}
pp->orphan_vg_name = FMT_TEXT_ORPHAN_VG_NAME;
}
if (arg_is_set(cmd, setphysicalvolumesize_ARG)) {
new_size = arg_uint64_value(cmd, setphysicalvolumesize_ARG, UINT64_C(0));
if (!dev_get_size(pd->dev, &size)) {
log_error("Can't get device size of %s.", dev_name(pd->dev));
dm_list_move(&pp->arg_fail, &pd->list);
return 0;
}
if (new_size != size)
need_size_prompt = 1;
}
/*
* pvcreate is being run on this device, and it's not a PV,
* or is an orphan PV. Neither case requires a prompt.
* Or, pvcreate is being run on this device, but the device
* is already a PV in a VG. A prompt or force option is required
* to use it.
*/
if (pd->is_orphan_pv || pd->is_not_pv)
need_vg_prompt = 0;
else
need_vg_prompt = 1;
if (!need_size_prompt && !need_vg_prompt)
return 1;
if (!(prompt = dm_pool_zalloc(cmd->mem, sizeof(*prompt)))) {
dm_list_move(&pp->arg_fail, &pd->list);
return_0;
}
prompt->dev = pd->dev;
prompt->pv_name = dm_pool_strdup(cmd->mem, dev_name(pd->dev));
prompt->size = size;
prompt->new_size = new_size;
if (pd->is_used_unknown_pv)
prompt->vg_name_unknown = 1;
else if (need_vg_prompt)
prompt->vg_name = dm_pool_strdup(cmd->mem, vgname);
if (need_size_prompt)
prompt->type |= PROMPT_PVCREATE_DEV_SIZE;
if (need_vg_prompt)
prompt->type |= PROMPT_PVCREATE_PV_IN_VG;
dm_list_add(&pp->prompts, &prompt->list);
return 1;
}
static int _pvremove_check_used(struct cmd_context *cmd,
struct pvcreate_params *pp,
struct pvcreate_device *pd)
{
struct pvcreate_prompt *prompt;
struct lvmcache_info *info;
const char *vgname = NULL;
log_debug("Checking %s for pvremove %.32s.",
dev_name(pd->dev), pd->dev->pvid[0] ? pd->dev->pvid : "");
/*
* Is there a pv here already?
* If not, this is an error unless you used -f.
*/
if (!pd->dev->pvid[0]) {
log_debug("Check pvremove arg %s no PVID found", dev_name(pd->dev));
if (pp->force)
return 1;
pd->is_not_pv = 1;
}
if (!(info = lvmcache_info_from_pvid(pd->dev->pvid, pd->dev, 0))) {
if (pp->force)
return 1;
log_error("Failed to read lvm info for %s PVID %s.", dev_name(pd->dev), pd->dev->pvid);
dm_list_move(&pp->arg_fail, &pd->list);
return 0;
}
if (info)
vgname = lvmcache_vgname_from_info(info);
/*
* What kind of device is this: an orphan PV, an uninitialized/unused
* device, a PV used in a VG.
*/
if (pd->is_not_pv) {
/* Device is not a PV. */
log_debug("Check pvremove arg %s device is not a PV.", dev_name(pd->dev));
} else if (vgname && !is_orphan_vg(vgname)) {
/* Device is a PV used in a VG. */
log_debug("Check pvremove arg %s found vg %s.", dev_name(pd->dev), vgname);
pd->is_vg_pv = 1;
pd->vg_name = dm_pool_strdup(cmd->mem, vgname);
} else if (info && (!vgname || (vgname && is_orphan_vg(vgname)))) {
uint32_t ext_flags = lvmcache_ext_flags(info);
if (ext_flags & PV_EXT_USED) {
/* Device is used in an unknown VG. */
log_debug("Check pvremove arg %s found EXT_USED flag.", dev_name(pd->dev));
pd->is_used_unknown_pv = 1;
} else {
/* Device is an orphan PV. */
log_debug("Check pvremove arg %s is orphan.", dev_name(pd->dev));
pd->is_orphan_pv = 1;
}
pp->orphan_vg_name = FMT_TEXT_ORPHAN_VG_NAME;
}
if (pd->is_not_pv) {
log_error("No PV found on device %s.", dev_name(pd->dev));
dm_list_move(&pp->arg_fail, &pd->list);
return 0;
}
/*
* pvremove is being run on this device, and it's not a PV,
* or is an orphan PV. Neither case requires a prompt.
*/
if (pd->is_orphan_pv)
return 1;
/*
* pvremove is being run on this device, but the device is in a VG.
* A prompt or force option is required to use it.
*/
if (!(prompt = dm_pool_zalloc(cmd->mem, sizeof(*prompt)))) {
dm_list_move(&pp->arg_fail, &pd->list);
return_0;
}
prompt->dev = pd->dev;
prompt->pv_name = dm_pool_strdup(cmd->mem, dev_name(pd->dev));
if (pd->is_used_unknown_pv)
prompt->vg_name_unknown = 1;
else
prompt->vg_name = dm_pool_strdup(cmd->mem, vgname);
prompt->type |= PROMPT_PVREMOVE_PV_IN_VG;
dm_list_add(&pp->prompts, &prompt->list);
return 1;
}
static int _confirm_check_used(struct cmd_context *cmd,
struct pvcreate_params *pp,
struct pvcreate_device *pd)
{
struct lvmcache_info *info = NULL;
const char *vgname = NULL;
int is_not_pv = 0;
log_debug("Checking %s to confirm %.32s.",
dev_name(pd->dev), pd->dev->pvid[0] ? pd->dev->pvid : "");
if (!pd->dev->pvid[0]) {
log_debug("Check confirm arg %s no PVID found", dev_name(pd->dev));
is_not_pv = 1;
}
if (!(info = lvmcache_info_from_pvid(pd->dev->pvid, pd->dev, 0))) {
log_debug("Check confirm arg %s no info.", dev_name(pd->dev));
is_not_pv = 1;
}
if (info)
vgname = lvmcache_vgname_from_info(info);
/*
* What kind of device is this: an orphan PV, an uninitialized/unused
* device, a PV used in a VG.
*/
if (vgname && !is_orphan_vg(vgname)) {
/* Device is a PV used in a VG. */
if (pd->is_orphan_pv || pd->is_not_pv || pd->is_used_unknown_pv) {
/* In first check it was an orphan or unused. */
goto fail;
}
if (pd->is_vg_pv && pd->vg_name && strcmp(pd->vg_name, vgname)) {
/* In first check it was in a different VG. */
goto fail;
}
} else if (info && (!vgname || is_orphan_vg(vgname))) {
uint32_t ext_flags = lvmcache_ext_flags(info);
/* Device is an orphan PV. */
if (pd->is_not_pv) {
/* In first check it was not a PV. */
goto fail;
}
if (pd->is_vg_pv) {
/* In first check it was in a VG. */
goto fail;
}
if ((ext_flags & PV_EXT_USED) && !pd->is_used_unknown_pv) {
/* In first check it was different. */
goto fail;
}
if (!(ext_flags & PV_EXT_USED) && pd->is_used_unknown_pv) {
/* In first check it was different. */
goto fail;
}
} else if (is_not_pv) {
/* Device is not a PV. */
if (pd->is_orphan_pv || pd->is_used_unknown_pv) {
/* In first check it was an orphan PV. */
goto fail;
}
if (pd->is_vg_pv) {
/* In first check it was in a VG. */
goto fail;
}
}
return 1;
fail:
log_error("Cannot use device %s: it changed during prompt.", dev_name(pd->dev));
dm_list_move(&pp->arg_fail, &pd->list);
return 1;
}
/*
* This can be used by pvcreate, vgcreate and vgextend to create PVs. The
* callers need to set up the pvcreate_each_params structure based on command
* line args. This includes the pv_names field which specifies the devices to
* create PVs on.
*
* This function returns 0 (failed) if the caller requires all specified
* devices to be created, and any of those devices are not found, or any of
* them cannot be created.
*
* This function returns 1 (success) if the caller requires all specified
* devices to be created, and all are created, or if the caller does not
* require all specified devices to be created and one or more were created.
*
* Process of opening, scanning and filtering:
*
* - label scan and filter all devs
* . open ro
* . standard label scan at the start of command
* . done prior to this function
*
* - label scan and filter dev args
* . label_scan_devs(&scan_devs) in this function
* . open ro
* . uses full md component check
* . typically the first scan and filter of pvcreate devs
*
* - close and reopen dev args
* . open rw and excl
* . done by label_scan_devs_excl
*
* - repeat label scan and filter dev args
* . using reopened rw excl fd
* . since something could have used dev
* in the small window between close and reopen
*
* - wipe and write new headers
* . using reopened rw excl fd
*/
int pvcreate_each_device(struct cmd_context *cmd,
struct processing_handle *handle,
struct pvcreate_params *pp)
{
struct pvcreate_device *pd, *pd2;
struct pvcreate_prompt *prompt, *prompt2;
struct physical_volume *pv;
struct volume_group *orphan_vg;
struct dm_list remove_duplicates;
struct dm_list arg_sort;
struct dm_list scan_devs;
struct dm_list rescan_devs;
struct pv_list *pvl;
struct pv_list *vgpvl;
struct device_list *devl;
const char *pv_name;
unsigned int physical_block_size, logical_block_size;
unsigned int prev_pbs = 0, prev_lbs = 0;
int must_use_all = (cmd->cname->flags & MUST_USE_ALL_ARGS);
int unlocked_for_prompts = 0;
int found;
unsigned i;
set_pv_notify(cmd);
dm_list_init(&remove_duplicates);
dm_list_init(&arg_sort);
dm_list_init(&scan_devs);
dm_list_init(&rescan_devs);
handle->custom_handle = pp;
/*
* Create a list entry for each name arg.
*/
for (i = 0; i < pp->pv_count; i++) {
dm_unescape_colons_and_at_signs(pp->pv_names[i], NULL, NULL);
pv_name = pp->pv_names[i];
if (!(pd = dm_pool_zalloc(cmd->mem, sizeof(*pd)))) {
log_error("alloc failed.");
return 0;
}
if (!(pd->name = dm_pool_strdup(cmd->mem, pv_name))) {
log_error("strdup failed.");
return 0;
}
dm_list_add(&pp->arg_devices, &pd->list);
}
/*
* Translate arg names into struct device's.
*
* lvmcache_label_scan has already been run by the caller.
* It has likely found and filtered pvremove args, but often
* not pvcreate args, since pvcreate args are not typically PVs
* yet (but may be.)
*
* We call label_scan_devs on the args, using the full
* md filter (the previous scan likely did not use the
* full md filter - we really only need to check the
* command args to ensure they are not md components.)
*/
dm_list_iterate_items_safe(pd, pd2, &pp->arg_devices) {
struct device *dev;
/* No filter used here */
if (!(dev = dev_cache_get(cmd, pd->name, NULL))) {
log_error("No device found for %s.", pd->name);
dm_list_del(&pd->list);
dm_list_add(&pp->arg_fail, &pd->list);
continue;
}
if (!(devl = dm_pool_zalloc(cmd->mem, sizeof(*devl))))
goto bad;
devl->dev = dev;
pd->dev = dev;
dm_list_add(&scan_devs, &devl->list);
}
if (dm_list_empty(&pp->arg_devices))
goto_bad;
/*
* Clear the filtering results from lvmcache_label_scan because we are
* going to rerun the filters and don't want to get the results saved
* by the prior filtering. The filtering in label scan will use full
* md filter.
*
* We allow pvcreate to look outside devices file here to find
* the target device, in case the user has not added the device
* being pvcreated to the devices file.
*/
dm_list_iterate_items(devl, &scan_devs)
cmd->filter->wipe(cmd, cmd->filter, devl->dev, NULL);
cmd->use_full_md_check = 1;
if (cmd->enable_devices_file)
cmd->filter_deviceid_skip = 1;
log_debug("Scanning and filtering device args (%u).", dm_list_size(&scan_devs));
label_scan_devs(cmd, cmd->filter, &scan_devs);
/*
* Check if the filtering done by label scan excluded any devices.
*/
dm_list_iterate_items_safe(pd, pd2, &pp->arg_devices) {
if (!cmd->filter->passes_filter(cmd, cmd->filter, pd->dev, NULL)) {
log_error("Cannot use %s: %s", pd->name, devname_error_reason(pd->name));
dm_list_del(&pd->list);
dm_list_add(&pp->arg_fail, &pd->list);
}
}
cmd->filter_deviceid_skip = 0;
/*
* Can the command continue if some specified devices were not found?
*/
if (must_use_all && !dm_list_empty(&pp->arg_fail)) {
log_error("Command requires all devices to be found.");
return_0;
}
/*
* Check for consistent block sizes.
*/
if (pp->check_consistent_block_size) {
dm_list_iterate_items(pd, &pp->arg_devices) {
logical_block_size = 0;
physical_block_size = 0;
if (!dev_get_direct_block_sizes(pd->dev, &physical_block_size, &logical_block_size)) {
log_warn("WARNING: Unknown block size for device %s.", dev_name(pd->dev));
continue;
}
if (!logical_block_size) {
log_warn("WARNING: Unknown logical_block_size for device %s.", dev_name(pd->dev));
continue;
}
if (!prev_lbs) {
prev_lbs = logical_block_size;
prev_pbs = physical_block_size;
continue;
}
if (prev_lbs == logical_block_size) {
/* Require lbs to match, just warn about unmatching pbs. */
if (!cmd->allow_mixed_block_sizes && prev_pbs && physical_block_size &&
(prev_pbs != physical_block_size))
log_warn("WARNING: Devices have inconsistent physical block sizes (%u and %u).",
prev_pbs, physical_block_size);
continue;
}
if (!cmd->allow_mixed_block_sizes) {
log_error("Devices have inconsistent logical block sizes (%u and %u).",
prev_lbs, logical_block_size);
log_print("See lvm.conf allow_mixed_block_sizes.");
return 0;
}
}
}
/* check_used moves pd entries into the arg_fail list if pvcreate/pvremove is disallowed */
dm_list_iterate_items_safe(pd, pd2, &pp->arg_devices) {
if (pp->is_remove)
_pvremove_check_used(cmd, pp, pd);
else
_pvcreate_check_used(cmd, pp, pd);
}
/*
* If the user specified a uuid for the new PV, check
* if a PV on another dev is already using that uuid.
*/
if (!pp->is_remove && pp->uuid_str) {
struct device *dev;
if ((dev = lvmcache_device_from_pvid(cmd, &pp->pva.id, NULL))) {
dm_list_iterate_items_safe(pd, pd2, &pp->arg_devices) {
if (pd->dev != dev) {
log_error("UUID %s already in use on \"%s\".", pp->uuid_str, dev_name(dev));
dm_list_move(&pp->arg_fail, &pd->list);
}
}
}
}
/*
* Special case: pvremove -ff is allowed to clear a duplicate device in
* the unchosen duplicates list. We save them here and erase them below.
*/
if (pp->is_remove && (pp->force == DONT_PROMPT_OVERRIDE) &&
!dm_list_empty(&pp->arg_devices) && lvmcache_has_duplicate_devs()) {
dm_list_iterate_items_safe(pd, pd2, &pp->arg_devices) {
if (lvmcache_dev_is_unused_duplicate(pd->dev)) {
log_debug("Check pvremove arg %s device is a duplicate.", dev_name(pd->dev));
dm_list_move(&remove_duplicates, &pd->list);
}
}
}
/*
* Any devices not moved to arg_fail can be processed.
*/
dm_list_splice(&pp->arg_process, &pp->arg_devices);
/*
* Can the command continue if some specified devices cannot be used?
*/
if (!dm_list_empty(&pp->arg_fail) && must_use_all)
goto_bad;
/*
* The command cannot continue if there are no devices to process.
*/
if (dm_list_empty(&pp->arg_process) && dm_list_empty(&remove_duplicates)) {
log_debug("No devices to process.");
goto bad;
}
/*
* Clear any prompts that have answers without asking the user.
*/
dm_list_iterate_items_safe(prompt, prompt2, &pp->prompts) {
_check_pvcreate_prompt(cmd, pp, prompt, 0);
switch (prompt->answer) {
case PROMPT_ANSWER_YES:
/* The PV can be used, leave it on arg_process. */
dm_list_del(&prompt->list);
break;
case PROMPT_ANSWER_NO:
/* The PV cannot be used, remove it from arg_process. */
if ((pd = _pvcreate_list_find_dev(&pp->arg_process, prompt->dev)))
dm_list_move(&pp->arg_fail, &pd->list);
dm_list_del(&prompt->list);
break;
}
}
if (!dm_list_empty(&pp->arg_fail) && must_use_all)
goto_bad;
/*
* If no remaining prompts need a user response, then keep orphans
* locked and go directly to the create steps.
*/
if (dm_list_empty(&pp->prompts))
goto do_command;
/*
* Prompts require asking the user and make take some time, during
* which we don't want to block other commands. So, release the lock
* to prevent blocking other commands while we wait. After a response
* from the user, reacquire the lock, verify that the PVs were not used
* during the wait, then do the create steps.
*/
lockf_global(cmd, "un");
unlocked_for_prompts = 1;
/*
* Process prompts that require asking the user. The global lock is
* not held, so there's no harm in waiting for a user to respond.
*/
dm_list_iterate_items_safe(prompt, prompt2, &pp->prompts) {
_check_pvcreate_prompt(cmd, pp, prompt, 1);
switch (prompt->answer) {
case PROMPT_ANSWER_YES:
/* The PV can be used, leave it on arg_process. */
dm_list_del(&prompt->list);
break;
case PROMPT_ANSWER_NO:
/* The PV cannot be used, remove it from arg_process. */
if ((pd = _pvcreate_list_find_dev(&pp->arg_process, prompt->dev)))
dm_list_move(&pp->arg_fail, &pd->list);
dm_list_del(&prompt->list);
break;
}
if (!dm_list_empty(&pp->arg_fail) && must_use_all)
goto_out;
if (sigint_caught())
goto_out;
if (prompt->abort_command)
goto_out;
}
/*
* Reacquire the lock that was released above before waiting, then
* check again that the devices can still be used. If the second check
* finds them changed, or can't find them any more, then they aren't
* used. Use a non-blocking request when reacquiring to avoid
* potential deadlock since this is not the normal locking sequence.
*/
if (!lockf_global_nonblock(cmd, "ex")) {
log_error("Failed to reacquire global lock after prompt.");
goto_out;
}
do_command:
dm_list_iterate_items(pd, &pp->arg_process) {
if (!(devl = dm_pool_zalloc(cmd->mem, sizeof(*devl))))
goto bad;
devl->dev = pd->dev;
dm_list_add(&rescan_devs, &devl->list);
}
/*
* We want label_scan excl to repeat the filter check in case something
* changed to filter out a dev before we were able to get exclusive.
*/
dm_list_iterate_items(devl, &rescan_devs)
cmd->filter->wipe(cmd, cmd->filter, devl->dev, NULL);
if (cmd->enable_devices_file)
cmd->filter_deviceid_skip = 1;
log_debug("Rescanning and filtering device args with exclusive open");
if (!label_scan_devs_excl(cmd, cmd->filter, &rescan_devs)) {
log_debug("Failed to rescan devs excl");
goto bad;
}
dm_list_iterate_items_safe(pd, pd2, &pp->arg_process) {
if (!cmd->filter->passes_filter(cmd, cmd->filter, pd->dev, NULL)) {
log_error("Cannot use %s: %s", pd->name, devname_error_reason(pd->name));
dm_list_del(&pd->list);
dm_list_add(&pp->arg_fail, &pd->list);
}
}
cmd->filter_deviceid_skip = 0;
if (dm_list_empty(&pp->arg_process) && dm_list_empty(&remove_duplicates)) {
log_debug("No devices to process.");
goto bad;
}
if (!dm_list_empty(&pp->arg_fail) && must_use_all)
goto_bad;
/*
* If the global lock was unlocked to wait for prompts, then
* devs could have changed while unlocked, so confirm that
* the devs are unchanged since check_used.
* Changed pd entries are moved to arg_fail.
*/
if (unlocked_for_prompts) {
dm_list_iterate_items_safe(pd, pd2, &pp->arg_process)
_confirm_check_used(cmd, pp, pd);
if (!dm_list_empty(&pp->arg_fail) && must_use_all)
goto_bad;
}
if (dm_list_empty(&pp->arg_process)) {
log_debug("No devices to process.");
goto bad;
}
/*
* Reorder arg_process entries to match the original order of args.
*/
dm_list_splice(&arg_sort, &pp->arg_process);
for (i = 0; i < pp->pv_count; i++) {
if ((pd = _pvcreate_list_find_name(&arg_sort, pp->pv_names[i])))
dm_list_move(&pp->arg_process, &pd->list);
}
if (pp->is_remove)
dm_list_splice(&pp->arg_remove, &pp->arg_process);
else
dm_list_splice(&pp->arg_create, &pp->arg_process);
/*
* Wipe signatures on devices being created.
*/
dm_list_iterate_items_safe(pd, pd2, &pp->arg_create) {
log_verbose("Wiping signatures on new PV %s.", pd->name);
if (!wipe_known_signatures(cmd, pd->dev, pd->name, TYPE_LVM1_MEMBER | TYPE_LVM2_MEMBER,
0, pp->yes, pp->force, &pd->wiped)) {
dm_list_move(&pp->arg_fail, &pd->list);
}
if (sigint_caught())
goto_bad;
}
if (!dm_list_empty(&pp->arg_fail) && must_use_all)
goto_bad;
/*
* Find existing orphan PVs that vgcreate or vgextend want to use.
* "preserve_existing" means that the command wants to use existing PVs
* and not recreate a new PV on top of an existing PV.
*/
if (pp->preserve_existing && pp->orphan_vg_name) {
log_debug("Using existing orphan PVs in %s.", pp->orphan_vg_name);
if (!(orphan_vg = vg_read_orphans(cmd, pp->orphan_vg_name))) {
log_error("Cannot read orphans VG %s.", pp->orphan_vg_name);
goto bad;
}
dm_list_iterate_items_safe(pd, pd2, &pp->arg_create) {
if (!pd->is_orphan_pv)
continue;
if (!(pvl = dm_pool_alloc(cmd->mem, sizeof(*pvl)))) {
log_error("alloc pvl failed.");
dm_list_move(&pp->arg_fail, &pd->list);
continue;
}
found = 0;
dm_list_iterate_items(vgpvl, &orphan_vg->pvs) {
if (vgpvl->pv->dev == pd->dev) {
found = 1;
break;
}
}
if (found) {
log_debug("Using existing orphan PV %s.", pv_dev_name(vgpvl->pv));
pvl->pv = vgpvl->pv;
dm_list_add(&pp->pvs, &pvl->list);
/* allow deviceidtype_ARG/deviceid_ARG ? */
device_id_add(cmd, pd->dev, (const char *)&pvl->pv->id.uuid, NULL, NULL);
} else {
log_error("Failed to find PV %s", pd->name);
dm_list_move(&pp->arg_fail, &pd->list);
}
}
}
/*
* Create PVs on devices. Either create a new PV on top of an existing
* one (e.g. for pvcreate), or create a new PV on a device that is not
* a PV.
*/
dm_list_iterate_items_safe(pd, pd2, &pp->arg_create) {
/* Using existing orphan PVs is covered above. */
if (pp->preserve_existing && pd->is_orphan_pv)
continue;
if (!dm_list_empty(&pp->arg_fail) && must_use_all)
break;
if (!(pvl = dm_pool_alloc(cmd->mem, sizeof(*pvl)))) {
log_error("alloc pvl failed.");
dm_list_move(&pp->arg_fail, &pd->list);
continue;
}
pv_name = pd->name;
log_debug("Creating a new PV on %s.", pv_name);
if (!(pv = pv_create(cmd, pd->dev, &pp->pva))) {
log_error("Failed to setup physical volume \"%s\".", pv_name);
dm_list_move(&pp->arg_fail, &pd->list);
continue;
}
/* allow deviceidtype_ARG/deviceid_ARG ? */
device_id_add(cmd, pd->dev, (const char *)&pv->id.uuid, NULL, NULL);
log_verbose("Set up physical volume for \"%s\" with %" PRIu64
" available sectors.", pv_name, pv_size(pv));
if (!label_remove(pv->dev)) {
log_error("Failed to wipe existing label on %s.", pv_name);
dm_list_move(&pp->arg_fail, &pd->list);
continue;
}
if (pp->zero) {
log_verbose("Zeroing start of device %s.", pv_name);
if (!dev_write_zeros(pv->dev, 0, 2048)) {
log_error("%s not wiped: aborting.", pv_name);
dm_list_move(&pp->arg_fail, &pd->list);
continue;
}
}
log_verbose("Writing physical volume data to disk \"%s\".", pv_name);
if (!pv_write(cmd, pv, 0)) {
log_error("Failed to write physical volume \"%s\".", pv_name);
dm_list_move(&pp->arg_fail, &pd->list);
continue;
}
log_print_unless_silent("Physical volume \"%s\" successfully created.",
pv_name);
pvl->pv = pv;
dm_list_add(&pp->pvs, &pvl->list);
}
/*
* Remove PVs from devices for pvremove.
*/
dm_list_iterate_items_safe(pd, pd2, &pp->arg_remove) {
if (!label_remove(pd->dev)) {
log_error("Failed to wipe existing label(s) on %s.", pd->name);
dm_list_move(&pp->arg_fail, &pd->list);
continue;
}
device_id_pvremove(cmd, pd->dev);
log_print_unless_silent("Labels on physical volume \"%s\" successfully wiped.",
pd->name);
}
/*
* Special case: pvremove duplicate PVs (also see above).
*/
dm_list_iterate_items_safe(pd, pd2, &remove_duplicates) {
if (!label_remove(pd->dev)) {
log_error("Failed to wipe existing label(s) on %s.", pd->name);
dm_list_move(&pp->arg_fail, &pd->list);
continue;
}
lvmcache_del_dev_from_duplicates(pd->dev);
device_id_pvremove(cmd, pd->dev);
log_print_unless_silent("Labels on physical volume \"%s\" successfully wiped.",
pd->name);
}
/* TODO: when vgcreate uses only existing PVs this doesn't change and can be skipped */
device_ids_write(cmd);
/*
* Don't keep devs open excl in bcache because the excl will prevent
* using that dev elsewhere.
*/
dm_list_iterate_items(devl, &rescan_devs)
label_scan_invalidate(devl->dev);
dm_list_iterate_items(pd, &pp->arg_fail)
log_debug("%s: command failed for %s.",
cmd->command->name, pd->name);
if (!dm_list_empty(&pp->arg_fail))
goto_out;
return 1;
bad:
out:
return 0;
}
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