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Attempt to load missing targets using modprobe.

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Simplify dev_manager_info().
This commit is contained in:
Alasdair Kergon 2005-10-17 18:00:02 +00:00
parent a653923fe7
commit f894b4b1b7
13 changed files with 88 additions and 101 deletions
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1
WHATS_NEW
View File

@ -1,5 +1,6 @@
Version 2.02.00 -
===================================
Simplify dev_manager_info().
Attempt to load missing targets using modprobe.
Add -a to lvscan.
Move mknodes into libdevmapper.

1
include/.symlinks
View File

@ -37,6 +37,7 @@
../lib/misc/crc.h
../lib/misc/intl.h
../lib/misc/lib.h
../lib/misc/lvm-exec.h
../lib/misc/lvm-file.h
../lib/misc/lvm-string.h
../lib/misc/selinux.h

3
lib/Makefile.in
View File

@ -1,6 +1,6 @@
#
# Copyright (C) 2001-2004 Sistina Software, Inc. All rights reserved.
# Copyright (C) 2004 Red Hat, Inc. All rights reserved.
# Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
#
# This file is part of the LVM2.
#
@ -74,6 +74,7 @@ SOURCES =\
metadata/segtype.c \
metadata/snapshot_manip.c \
misc/crc.c \
misc/lvm-exec.c \
misc/lvm-file.c \
misc/lvm-string.c \
mm/memlock.c \

116
lib/activate/activate.c
View File

@ -19,6 +19,7 @@
#include "memlock.h"
#include "display.h"
#include "fs.h"
#include "lvm-exec.h"
#include "lvm-file.h"
#include "lvm-string.h"
#include "toolcontext.h"
@ -77,7 +78,7 @@ int target_present(const char *target_name)
{
return 0;
}
int lv_info(const struct logical_volume *lv, struct lvinfo *info,
int lv_info(struct cmd_context *cmd, const struct logical_volume *lv, struct lvinfo *info,
int with_open_count)
{
return 0;
@ -256,48 +257,25 @@ int library_version(char *version, size_t size)
if (!activation())
return 0;
if (!dm_get_library_version(version, size))
return 0;
return 1;
return dm_get_library_version(version, size);
}
int driver_version(char *version, size_t size)
{
int r = 0;
struct dm_task *dmt;
if (!activation())
return 0;
log_very_verbose("Getting driver version");
if (!(dmt = dm_task_create(DM_DEVICE_VERSION))) {
stack;
return 0;
}
if (!dm_task_run(dmt))
log_error("Failed to get driver version");
if (!dm_task_get_driver_version(dmt, version, size))
goto out;
r = 1;
out:
dm_task_destroy(dmt);
return r;
return dm_driver_version(version, size);
}
int target_present(const char *target_name)
static int _target_present(const char *target_name)
{
int r = 0;
struct dm_task *dmt;
struct dm_versions *target, *last_target;
if (!activation())
return 0;
log_very_verbose("Getting target version for %s", target_name);
if (!(dmt = dm_task_create(DM_DEVICE_LIST_VERSIONS))) {
stack;
@ -329,26 +307,54 @@ int target_present(const char *target_name)
return r;
}
/*
* Returns 1 if info structure populated, else 0 on failure.
*/
static int _lv_info(const struct logical_volume *lv, int mknodes,
struct lvinfo *info, int with_open_count)
int target_present(const char *target_name)
{
int r;
struct dev_manager *dm;
struct dm_info dminfo;
char module[128];
if (!activation())
return 0;
if (!(dm = dev_manager_create(lv->vg->cmd, lv->vg->name))) {
#ifdef MODPROBE_CMD
if (_target_present(target_name))
return 1;
if (lvm_snprintf(module, sizeof(module), "dm-%s", target_name) < 0) {
log_error("target_present module name too long: %s", target_name);
return 0;
}
if (!exec_cmd(MODPROBE_CMD, module, "", "")) {
stack;
return 0;
}
#endif
return _target_present(target_name);
}
/*
* Returns 1 if info structure populated, else 0 on failure.
*/
static int _lv_info(struct cmd_context *cmd, const struct logical_volume *lv, int with_mknodes,
struct lvinfo *info, int with_open_count)
{
struct dm_info dminfo;
char *name;
if (!activation())
return 0;
if (!(name = build_dm_name(cmd->mem, lv->vg->name, lv->name, NULL))) {
stack;
return 0;
}
if (!(r = dev_manager_info(dm, lv, mknodes, with_open_count, &dminfo)))
log_debug("Getting device info for %s", name);
if (!dev_manager_info(name, lv->lvid.s, with_mknodes, with_open_count, &dminfo)) {
dm_pool_free(cmd->mem, name);
stack;
return 0;
}
info->exists = dminfo.exists;
info->suspended = dminfo.suspended;
@ -357,14 +363,14 @@ static int _lv_info(const struct logical_volume *lv, int mknodes,
info->minor = dminfo.minor;
info->read_only = dminfo.read_only;
dev_manager_destroy(dm);
return r;
dm_pool_free(cmd->mem, name);
return 1;
}
int lv_info(const struct logical_volume *lv, struct lvinfo *info,
int lv_info(struct cmd_context *cmd, const struct logical_volume *lv, struct lvinfo *info,
int with_open_count)
{
return _lv_info(lv, 0, info, with_open_count);
return _lv_info(cmd, lv, 0, info, with_open_count);
}
int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s,
@ -375,7 +381,7 @@ int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s,
if (!(lv = lv_from_lvid(cmd, lvid_s)))
return 0;
return _lv_info(lv, 0, info, with_open_count);
return _lv_info(cmd, lv, 0, info, with_open_count);
}
/*
@ -403,7 +409,7 @@ int lv_snapshot_percent(struct logical_volume *lv, float *percent)
}
/* FIXME Merge with snapshot_percent */
int lv_mirror_percent(struct logical_volume *lv, int wait, float *percent,
int lv_mirror_percent(struct cmd_context *cmd, struct logical_volume *lv, int wait, float *percent,
uint32_t *event_nr)
{
int r;
@ -413,7 +419,7 @@ int lv_mirror_percent(struct logical_volume *lv, int wait, float *percent,
if (!activation())
return 0;
if (!lv_info(lv, &info, 0)) {
if (!lv_info(cmd, lv, &info, 0)) {
stack;
return 0;
}
@ -434,11 +440,11 @@ int lv_mirror_percent(struct logical_volume *lv, int wait, float *percent,
return r;
}
static int _lv_active(struct logical_volume *lv)
static int _lv_active(struct cmd_context *cmd, struct logical_volume *lv)
{
struct lvinfo info;
if (!lv_info(lv, &info, 0)) {
if (!lv_info(cmd, lv, &info, 0)) {
stack;
return -1;
}
@ -446,11 +452,11 @@ static int _lv_active(struct logical_volume *lv)
return info.exists;
}
static int _lv_open_count(struct logical_volume *lv)
static int _lv_open_count(struct cmd_context *cmd, struct logical_volume *lv)
{
struct lvinfo info;
if (!lv_info(lv, &info, 1)) {
if (!lv_info(cmd, lv, &info, 1)) {
stack;
return -1;
}
@ -524,7 +530,7 @@ int lvs_in_vg_activated(struct volume_group *vg)
list_iterate_items(lvl, &vg->lvs) {
if (lvl->lv->status & VISIBLE_LV)
count += (_lv_active(lvl->lv) == 1);
count += (_lv_active(vg->cmd, lvl->lv) == 1);
}
return count;
@ -540,7 +546,7 @@ int lvs_in_vg_opened(struct volume_group *vg)
list_iterate_items(lvl, &vg->lvs) {
if (lvl->lv->status & VISIBLE_LV)
count += (_lv_open_count(lvl->lv) > 0);
count += (_lv_open_count(vg->cmd, lvl->lv) > 0);
}
return count;
@ -563,7 +569,7 @@ static int _lv_suspend(struct cmd_context *cmd, const char *lvid_s,
return 1;
}
if (!lv_info(lv, &info, 0)) {
if (!lv_info(cmd, lv, &info, 0)) {
stack;
return 0;
}
@ -609,7 +615,7 @@ static int _lv_resume(struct cmd_context *cmd, const char *lvid_s,
return 1;
}
if (!lv_info(lv, &info, 0)) {
if (!lv_info(cmd, lv, &info, 0)) {
stack;
return 0;
}
@ -654,7 +660,7 @@ int lv_deactivate(struct cmd_context *cmd, const char *lvid_s)
return 1;
}
if (!lv_info(lv, &info, 1)) {
if (!lv_info(cmd, lv, &info, 1)) {
stack;
return 0;
}
@ -724,7 +730,7 @@ static int _lv_activate(struct cmd_context *cmd, const char *lvid_s,
return 1;
}
if (!lv_info(lv, &info, 0)) {
if (!lv_info(cmd, lv, &info, 0)) {
stack;
return 0;
}
@ -766,7 +772,7 @@ int lv_mknodes(struct cmd_context *cmd, const struct logical_volume *lv)
return r;
}
if (!_lv_info(lv, 1, &info, 0)) {
if (!_lv_info(cmd, lv, 1, &info, 0)) {
stack;
return 0;
}

6
lib/activate/activate.h
View File

@ -52,7 +52,7 @@ int lv_mknodes(struct cmd_context *cmd, const struct logical_volume *lv);
/*
* Returns 1 if info structure has been populated, else 0.
*/
int lv_info(const struct logical_volume *lv, struct lvinfo *info,
int lv_info(struct cmd_context *cmd, const struct logical_volume *lv, struct lvinfo *info,
int with_open_count);
int lv_info_by_lvid(struct cmd_context *cmd, const char *lvid_s,
struct lvinfo *info, int with_open_count);
@ -67,7 +67,7 @@ int lv_activation_filter(struct cmd_context *cmd, const char *lvid_s,
* Returns 1 if percent has been set, else 0.
*/
int lv_snapshot_percent(struct logical_volume *lv, float *percent);
int lv_mirror_percent(struct logical_volume *lv, int wait, float *percent,
int lv_mirror_percent(struct cmd_context *cmd, struct logical_volume *lv, int wait, float *percent,
uint32_t *event_nr);
/*
@ -76,6 +76,4 @@ int lv_mirror_percent(struct logical_volume *lv, int wait, float *percent,
int lvs_in_vg_activated(struct volume_group *vg);
int lvs_in_vg_opened(struct volume_group *vg);
int lv_setup_cow_store(struct logical_volume *lv);
#endif

33
lib/activate/dev_manager.c
View File

@ -267,6 +267,12 @@ static int _info(const char *name, const char *uuid, int mknodes,
return 0;
}
int dev_manager_info(const char *name, const char *uuid,
int with_mknodes, int with_open_count, struct dm_info *info)
{
return _info(name, uuid, with_mknodes, with_open_count, info, NULL, NULL);
}
/* FIXME Interface must cope with multiple targets */
static int _status_run(const char *name, const char *uuid,
unsigned long long *s, unsigned long long *l,
@ -986,32 +992,6 @@ void dev_manager_destroy(struct dev_manager *dm)
dm_pool_destroy(dm->mem);
}
int dev_manager_info(struct dev_manager *dm, const struct logical_volume *lv,
int mknodes, int with_open_count, struct dm_info *info)
{
char *name;
/*
* Build a name for the top layer.
*/
if (!(name = build_dm_name(dm->mem, lv->vg->name, lv->name, NULL))) {
stack;
return 0;
}
/*
* Try and get some info on this device.
*/
log_debug("Getting device info for %s", name);
if (!_info(name, lv->lvid.s, mknodes, with_open_count, info, NULL,
NULL)) {
stack;
return 0;
}
return 1;
}
int dev_manager_snapshot_percent(struct dev_manager *dm,
struct logical_volume *lv, float *percent)
{
@ -2208,3 +2188,4 @@ void dev_manager_exit(void)
{
dm_lib_exit();
}

3
lib/activate/dev_manager.h
View File

@ -35,7 +35,7 @@ void dev_manager_exit(void);
* (eg, an origin is created before its snapshot, but is not
* unsuspended until the snapshot is also created.)
*/
int dev_manager_info(struct dev_manager *dm, const struct logical_volume *lv,
int dev_manager_info(const char *name, const char *uuid,
int mknodes, int with_open_count, struct dm_info *info);
int dev_manager_snapshot_percent(struct dev_manager *dm,
struct logical_volume *lv, float *percent);
@ -48,7 +48,6 @@ int dev_manager_deactivate(struct dev_manager *dm, struct logical_volume *lv);
int dev_manager_lv_mknodes(const struct logical_volume *lv);
int dev_manager_lv_rmnodes(const struct logical_volume *lv);
int dev_manager_mknodes(void);
/*
* Put the desired changes into effect.

4
lib/display/display.c
View File

@ -317,7 +317,7 @@ void lvdisplay_colons(struct logical_volume *lv)
{
int inkernel;
struct lvinfo info;
inkernel = lv_info(lv, &info, 1) && info.exists;
inkernel = lv_info(lv->vg->cmd, lv, &info, 1) && info.exists;
log_print("%s%s/%s:%s:%d:%d:-1:%d:%" PRIu64 ":%d:-1:%d:%d:%d:%d",
lv->vg->cmd->dev_dir,
@ -347,7 +347,7 @@ int lvdisplay_full(struct cmd_context *cmd, struct logical_volume *lv,
return 0;
}
inkernel = lv_info(lv, &info, 1) && info.exists;
inkernel = lv_info(cmd, lv, &info, 1) && info.exists;
log_print("--- Logical volume ---");

10
lib/report/report.c
View File

@ -295,7 +295,7 @@ static int _lvkmaj_disp(struct report_handle *rh, struct field *field,
struct lvinfo info;
uint64_t minusone = UINT64_C(-1);
if (lv_info(lv, &info, 0) && info.exists)
if (lv_info(lv->vg->cmd, lv, &info, 0) && info.exists)
return _int_disp(rh, field, &info.major);
else
return _int_disp(rh, field, &minusone);
@ -310,7 +310,7 @@ static int _lvkmin_disp(struct report_handle *rh, struct field *field,
struct lvinfo info;
uint64_t minusone = UINT64_C(-1);
if (lv_info(lv, &info, 0) && info.exists)
if (lv_info(lv->vg->cmd, lv, &info, 0) && info.exists)
return _int_disp(rh, field, &info.minor);
else
return _int_disp(rh, field, &minusone);
@ -366,7 +366,7 @@ static int _lvstatus_disp(struct report_handle *rh, struct field *field,
else
repstr[3] = '-';
if (lv_info(lv, &info, 1) && info.exists) {
if (lv_info(lv->vg->cmd, lv, &info, 1) && info.exists) {
if (info.suspended)
repstr[4] = 's'; /* Suspended */
else
@ -848,7 +848,7 @@ static int _snpercent_disp(struct report_handle *rh, struct field *field,
}
if (!(snap_seg = find_cow(lv)) ||
(lv_info(snap_seg->cow, &info, 0) && !info.exists)) {
(lv_info(lv->vg->cmd, snap_seg->cow, &info, 0) && !info.exists)) {
field->report_string = "";
*sortval = UINT64_C(0);
field->sort_value = sortval;
@ -894,7 +894,7 @@ static int _copypercent_disp(struct report_handle *rh, struct field *field,
}
if ((!(lv->status & PVMOVE) && !(lv->status & MIRRORED)) ||
!lv_mirror_percent(lv, 0, &percent, NULL)) {
!lv_mirror_percent(lv->vg->cmd, lv, 0, &percent, NULL)) {
field->report_string = "";
*sortval = UINT64_C(0);
field->sort_value = sortval;

2
tools/lvchange.c
View File

@ -262,7 +262,7 @@ static int lvchange_persistent(struct cmd_context *cmd,
log_error("Major number must be specified with -My");
return 0;
}
if (lv_info(lv, &info, 0) && info.exists &&
if (lv_info(cmd, lv, &info, 0) && info.exists &&
!arg_count(cmd, force_ARG)) {
if (yes_no_prompt("Logical volume %s will be "
"deactivated temporarily. "

2
tools/lvremove.c
View File

@ -53,7 +53,7 @@ static int lvremove_single(struct cmd_context *cmd, struct logical_volume *lv,
/* FIXME Ensure not referred to by another existing LVs */
if (lv_info(lv, &info, 1)) {
if (lv_info(cmd, lv, &info, 1)) {
if (info.open_count) {
log_error("Can't remove open logical volume \"%s\"",
lv->name);

6
tools/lvresize.c
View File

@ -388,7 +388,7 @@ static int _lvresize(struct cmd_context *cmd, struct lvresize_params *lp)
}
if (lp->mirrors && activation() &&
lv_info(lv, &info, 0) && info.exists) {
lv_info(cmd, lv, &info, 0) && info.exists) {
log_error("Mirrors cannot be resized while active yet.");
return ECMD_FAILED;
}
@ -402,7 +402,7 @@ static int _lvresize(struct cmd_context *cmd, struct lvresize_params *lp)
memset(&info, 0, sizeof(info));
if (lv_info(lv, &info, 0) && info.exists) {
if (lv_info(cmd, lv, &info, 0) && info.exists) {
log_error("Snapshot origin volumes can be resized "
"only while inactive: try lvchange -an");
return ECMD_FAILED;
@ -421,7 +421,7 @@ static int _lvresize(struct cmd_context *cmd, struct lvresize_params *lp)
if (lp->resize == LV_REDUCE || lp->resizefs) {
memset(&info, 0, sizeof(info));
if (!lv_info(lv, &info, 1) && driver_version(NULL, 0)) {
if (!lv_info(cmd, lv, &info, 1) && driver_version(NULL, 0)) {
log_error("lv_info failed: aborting");
return ECMD_FAILED;
}

2
tools/vgconvert.c
View File

@ -96,7 +96,7 @@ static int vgconvert_single(struct cmd_context *cmd, const char *vg_name,
continue;
if (lvnum_from_lvid(&lv->lvid) < MAX_RESTRICTED_LVS)
continue;
if (lv_info(lv, &info, 0) && info.exists) {
if (lv_info(cmd, lv, &info, 0) && info.exists) {
log_error("Logical volume %s must be "
"deactivated before conversion.",
lv->name);