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mirror of git://sourceware.org/git/lvm2.git synced 2024-12-21 13:34:40 +03:00

Rework the toollib interface (process_each_*) on top of new vg_read.

Sun May  3 12:32:30 CEST 2009  Petr Rockai <me@mornfall.net>
  * Rework the toollib interface (process_each_*) on top of new vg_read.

Rebased 6/26/09 by Dave W.
- Add skipping message to process_each_lv
- Remove inconsistent_t.
This commit is contained in:
Dave Wysochanski 2009-07-01 17:00:50 +00:00
parent b8b3508c59
commit 13e8c7e434
19 changed files with 84 additions and 181 deletions

View File

@ -155,16 +155,6 @@ typedef enum {
DONT_PROMPT_OVERRIDE = 2 /* Skip prompt + override a second condition */
} force_t;
/*
* What to do if VG is inconsistent
* FIXME: remove this after vg_read changes
*/
typedef enum {
VG_INCONSISTENT_ABORT = 0, /* Abort operation */
VG_INCONSISTENT_CONTINUE = 1, /* Process operation but do not try repair */
VG_INCONSISTENT_REPAIR = 2 /* Try to repair VG before processing */
} inconsistent_t;
struct cmd_context;
struct format_handler;
struct labeller;
@ -445,7 +435,7 @@ struct volume_group *vg_create(struct cmd_context *cmd, const char *name,
int pv_count, char **pv_names);
int vg_remove(struct volume_group *vg);
int vg_remove_single(struct cmd_context *cmd, const char *vg_name,
struct volume_group *vg, int consistent,
struct volume_group *vg,
force_t force);
int vg_rename(struct cmd_context *cmd, struct volume_group *vg,
const char *new_name);

View File

@ -357,7 +357,7 @@ static int remove_lvs_in_vg(struct cmd_context *cmd,
/* FIXME: remove redundant vg_name */
int vg_remove_single(struct cmd_context *cmd, const char *vg_name,
struct volume_group *vg, int consistent,
struct volume_group *vg,
force_t force __attribute((unused)))
{
struct physical_volume *pv;
@ -365,7 +365,7 @@ int vg_remove_single(struct cmd_context *cmd, const char *vg_name,
unsigned lv_count;
int ret = 1;
if (!vg || !consistent || vg_missing_pv_count(vg)) {
if (vg_read_error(vg) || vg_missing_pv_count(vg)) {
log_error("Volume group \"%s\" not found, is inconsistent "
"or has PVs missing.", vg_name);
log_error("Consider vgreduce --removemissing if metadata "

View File

@ -726,6 +726,6 @@ int lvchange(struct cmd_context *cmd, int argc, char **argv)
return EINVALID_CMD_LINE;
}
return process_each_lv(cmd, argc, argv, LCK_VG_WRITE, NULL,
return process_each_lv(cmd, argc, argv, READ_FOR_UPDATE, NULL,
&lvchange_single);
}

View File

@ -54,6 +54,6 @@ int lvdisplay(struct cmd_context *cmd, int argc, char **argv)
return EINVALID_CMD_LINE;
}
return process_each_lv(cmd, argc, argv, LCK_VG_READ, NULL,
return process_each_lv(cmd, argc, argv, 0, NULL,
&_lvdisplay_single);
}

View File

@ -41,6 +41,6 @@ int lvremove(struct cmd_context *cmd, int argc, char **argv)
cmd->handles_missing_pvs = 1;
return process_each_lv(cmd, argc, argv, LCK_VG_WRITE, NULL,
return process_each_lv(cmd, argc, argv, READ_FOR_UPDATE, NULL,
&lvremove_single);
}

View File

@ -80,6 +80,6 @@ int lvscan(struct cmd_context *cmd, int argc, char **argv)
return EINVALID_CMD_LINE;
}
return process_each_lv(cmd, argc, argv, LCK_VG_READ, NULL,
return process_each_lv(cmd, argc, argv, 0, NULL,
&lvscan_single);
}

View File

@ -175,7 +175,7 @@ static int _wait_for_single_mirror(struct cmd_context *cmd, const char *name, co
}
static int _poll_vg(struct cmd_context *cmd, const char *vgname,
struct volume_group *vg, int consistent, void *handle)
struct volume_group *vg, void *handle)
{
struct daemon_parms *parms = (struct daemon_parms *) handle;
struct lv_list *lvl;
@ -183,7 +183,7 @@ static int _poll_vg(struct cmd_context *cmd, const char *vgname,
const char *name;
int finished;
if (!vg_check_status(vg, EXPORTED_VG))
if (vg_read_error(vg))
return ECMD_FAILED;
dm_list_iterate_items(lvl, &vg->lvs) {
@ -208,9 +208,7 @@ static void _poll_for_all_vgs(struct cmd_context *cmd,
{
while (1) {
parms->outstanding_count = 0;
/* FIXME Should we silently recover it here or not? */
process_each_vg(cmd, 0, NULL, LCK_VG_WRITE,
VG_INCONSISTENT_ABORT, parms, _poll_vg);
process_each_vg(cmd, 0, NULL, READ_FOR_UPDATE, parms, _poll_vg);
if (!parms->outstanding_count)
break;
sleep(parms->interval);

View File

@ -18,8 +18,11 @@
static int _vgs_single(struct cmd_context *cmd __attribute((unused)),
const char *vg_name, struct volume_group *vg,
int consistent __attribute((unused)), void *handle)
void *handle)
{
if (vg_read_error(vg))
return ECMD_FAILED;
if (!report_object(handle, vg, NULL, NULL, NULL, NULL))
return ECMD_FAILED;
@ -176,17 +179,21 @@ static int _label_single(struct cmd_context *cmd, struct volume_group *vg,
static int _pvs_in_vg(struct cmd_context *cmd, const char *vg_name,
struct volume_group *vg,
int consistent __attribute((unused)),
void *handle)
{
if (vg_read_error(vg))
return ECMD_FAILED;
return process_each_pv_in_vg(cmd, vg, NULL, handle, &_pvs_single);
}
static int _pvsegs_in_vg(struct cmd_context *cmd, const char *vg_name,
struct volume_group *vg,
int consistent __attribute((unused)),
void *handle)
{
if (vg_read_error(vg))
return ECMD_FAILED;
return process_each_pv_in_vg(cmd, vg, NULL, handle, &_pvsegs_single);
}
@ -363,12 +370,11 @@ static int _report(struct cmd_context *cmd, int argc, char **argv,
switch (report_type) {
case LVS:
r = process_each_lv(cmd, argc, argv, LCK_VG_READ, report_handle,
r = process_each_lv(cmd, argc, argv, 0, report_handle,
&_lvs_single);
break;
case VGS:
r = process_each_vg(cmd, argc, argv, LCK_VG_READ,
VG_INCONSISTENT_CONTINUE,
r = process_each_vg(cmd, argc, argv, 0,
report_handle, &_vgs_single);
break;
case LABEL:
@ -380,12 +386,11 @@ static int _report(struct cmd_context *cmd, int argc, char **argv,
r = process_each_pv(cmd, argc, argv, NULL, LCK_VG_READ,
0, report_handle, &_pvs_single);
else
r = process_each_vg(cmd, argc, argv, LCK_VG_READ,
VG_INCONSISTENT_CONTINUE,
r = process_each_vg(cmd, argc, argv, 0,
report_handle, &_pvs_in_vg);
break;
case SEGS:
r = process_each_lv(cmd, argc, argv, LCK_VG_READ, report_handle,
r = process_each_lv(cmd, argc, argv, 0, report_handle,
&_lvsegs_single);
break;
case PVSEGS:
@ -393,8 +398,7 @@ static int _report(struct cmd_context *cmd, int argc, char **argv,
r = process_each_pv(cmd, argc, argv, NULL, LCK_VG_READ,
0, report_handle, &_pvsegs_single);
else
r = process_each_vg(cmd, argc, argv, LCK_VG_READ,
VG_INCONSISTENT_CONTINUE,
r = process_each_vg(cmd, argc, argv, 0,
report_handle, &_pvsegs_in_vg);
break;
}

View File

@ -164,7 +164,7 @@ int process_each_lv_in_vg(struct cmd_context *cmd,
}
int process_each_lv(struct cmd_context *cmd, int argc, char **argv,
uint32_t lock_type, void *handle,
uint32_t flags, void *handle,
int (*process_single) (struct cmd_context * cmd,
struct logical_volume * lv,
void *handle))
@ -172,7 +172,6 @@ int process_each_lv(struct cmd_context *cmd, int argc, char **argv,
int opt = 0;
int ret_max = ECMD_PROCESSED;
int ret = 0;
int consistent;
struct dm_list *tags_arg;
struct dm_list *vgnames; /* VGs to process */
@ -287,44 +286,14 @@ int process_each_lv(struct cmd_context *cmd, int argc, char **argv,
vgname = strl->str;
if (is_orphan_vg(vgname))
continue; /* FIXME Unnecessary? */
if (!lock_vol(cmd, vgname, lock_type)) {
log_error("Can't lock %s: skipping", vgname);
ret_max = ECMD_FAILED;
continue;
}
if (lock_type & LCK_WRITE)
consistent = 1;
else
consistent = 0;
if (!(vg = vg_read_internal(cmd, vgname, NULL, &consistent)) || !consistent) {
unlock_vg(cmd, vgname);
if (!vg)
log_error("Volume group \"%s\" "
"not found", vgname);
else {
if (!vg_check_status(vg, CLUSTERED)) {
if (ret_max < ECMD_FAILED)
ret_max = ECMD_FAILED;
vg_release(vg);
continue;
}
log_error("Volume group \"%s\" "
"inconsistent", vgname);
}
vg = vg_read(cmd, vgname, NULL, flags);
if (vg_read_error(vg)) {
vg_release(vg);
if (!vg || !(vg = recover_vg(cmd, vgname, lock_type))) {
if (ret_max < ECMD_FAILED)
if (ret_max < ECMD_FAILED) {
log_error("Skipping volume group %s", vgname);
ret_max = ECMD_FAILED;
vg_release(vg);
continue;
}
}
if (!vg_check_status(vg, CLUSTERED)) {
unlock_and_release_vg(cmd, vg, vgname);
if (ret_max < ECMD_FAILED)
ret_max = ECMD_FAILED;
continue;
}
@ -383,8 +352,8 @@ int process_each_segment_in_pv(struct cmd_context *cmd,
if (is_pv(pv) && !vg && !is_orphan(pv)) {
vg_name = pv_vg_name(pv);
if (!(vg = vg_lock_and_read(cmd, vg_name, NULL, LCK_VG_READ,
CLUSTERED, 0))) {
vg = vg_read(cmd, vg_name, NULL, 0);
if (vg_read_error(vg)) {
log_error("Skipping volume group %s", vg_name);
return ECMD_FAILED;
}
@ -449,33 +418,18 @@ int process_each_segment_in_lv(struct cmd_context *cmd,
static int _process_one_vg(struct cmd_context *cmd, const char *vg_name,
const char *vgid,
struct dm_list *tags, struct dm_list *arg_vgnames,
uint32_t lock_type, inconsistent_t repair_vg, void *handle,
int ret_max,
uint32_t flags, void *handle, int ret_max,
int (*process_single) (struct cmd_context * cmd,
const char *vg_name,
struct volume_group * vg,
int consistent, void *handle))
void *handle))
{
struct volume_group *vg;
int consistent = 0;
int ret = 0;
if (!lock_vol(cmd, vg_name, lock_type)) {
log_error("Can't lock volume group %s: skipping", vg_name);
return ECMD_FAILED;
}
log_verbose("Finding volume group \"%s\"", vg_name);
if (!(vg = vg_read_internal(cmd, vg_name, vgid, &consistent))) {
log_error("Volume group \"%s\" not found", vg_name);
unlock_vg(cmd, vg_name);
return ECMD_FAILED;
}
if (!vg_check_status(vg, CLUSTERED)) {
ret_max = ECMD_FAILED;
goto out;
}
vg = vg_read(cmd, vg_name, vgid, flags);
if (!dm_list_empty(tags)) {
/* Only process if a tag matches or it's on arg_vgnames */
@ -484,26 +438,7 @@ static int _process_one_vg(struct cmd_context *cmd, const char *vg_name,
goto out;
}
if (!consistent)
switch (repair_vg) {
case VG_INCONSISTENT_ABORT:
log_error("Volume group %s inconsistent - skipping", vg_name);
ret_max = ECMD_FAILED;
goto out;
case VG_INCONSISTENT_CONTINUE:
log_error("Volume group %s inconsistent", vg_name);
break;
case VG_INCONSISTENT_REPAIR:
unlock_and_release_vg(cmd, vg, vg_name);
dev_close_all();
log_error("Volume group %s inconsistent", vg_name);
if (!(vg = recover_vg(cmd, vg_name, LCK_VG_WRITE)))
return ECMD_FAILED;
consistent = 1;
break;
}
if ((ret = process_single(cmd, vg_name, vg, consistent,
if ((ret = process_single(cmd, vg_name, vg,
handle)) > ret_max) {
ret_max = ret;
}
@ -514,11 +449,11 @@ out:
}
int process_each_vg(struct cmd_context *cmd, int argc, char **argv,
uint32_t lock_type, inconsistent_t repair_vg, void *handle,
uint32_t flags, void *handle,
int (*process_single) (struct cmd_context * cmd,
const char *vg_name,
struct volume_group * vg,
int consistent, void *handle))
void *handle))
{
int opt = 0;
int ret_max = ECMD_PROCESSED;
@ -581,7 +516,7 @@ int process_each_vg(struct cmd_context *cmd, int argc, char **argv,
continue;
ret_max = _process_one_vg(cmd, vg_name, vgid, &tags,
&arg_vgnames,
lock_type, repair_vg, handle,
flags, handle,
ret_max, process_single);
if (sigint_caught())
return ret_max;
@ -593,7 +528,7 @@ int process_each_vg(struct cmd_context *cmd, int argc, char **argv,
continue; /* FIXME Unnecessary? */
ret_max = _process_one_vg(cmd, vg_name, NULL, &tags,
&arg_vgnames,
lock_type, repair_vg, handle,
flags, handle,
ret_max, process_single);
if (sigint_caught())
return ret_max;
@ -1200,34 +1135,6 @@ struct dm_list *clone_pv_list(struct dm_pool *mem, struct dm_list *pvsl)
return r;
}
/*
* Attempt metadata recovery
*/
struct volume_group *recover_vg(struct cmd_context *cmd, const char *vgname,
uint32_t lock_type)
{
int consistent = 1;
struct volume_group *vg;
/* Don't attempt automatic recovery without proper locking */
if (lockingfailed())
return NULL;
lock_type &= ~LCK_TYPE_MASK;
lock_type |= LCK_WRITE;
if (!lock_vol(cmd, vgname, lock_type)) {
log_error("Can't lock %s for metadata recovery: skipping",
vgname);
return NULL;
}
if (!(vg = vg_read_internal(cmd, vgname, NULL, &consistent)))
unlock_vg(cmd, vgname);
return vg;
}
int apply_lvname_restrictions(const char *name)
{
if (!strncmp(name, "snapshot", 8)) {

View File

@ -27,11 +27,11 @@ struct volume_group *recover_vg(struct cmd_context *cmd, const char *vgname,
uint32_t lock_type);
int process_each_vg(struct cmd_context *cmd, int argc, char **argv,
uint32_t lock_type, inconsistent_t repair_vg, void *handle,
uint32_t flags, void *handle,
int (*process_single) (struct cmd_context * cmd,
const char *vg_name,
struct volume_group * vg,
int consistent, void *handle));
void *handle));
int process_each_pv(struct cmd_context *cmd, int argc, char **argv,
struct volume_group *vg, uint32_t lock_type,
@ -51,7 +51,7 @@ int process_each_segment_in_pv(struct cmd_context *cmd,
void *handle));
int process_each_lv(struct cmd_context *cmd, int argc, char **argv,
uint32_t lock_type, void *handle,
uint32_t flags, void *handle,
int (*process_single) (struct cmd_context * cmd,
struct logical_volume * lv,
void *handle));

View File

@ -48,12 +48,15 @@ static char *_expand_filename(const char *template, const char *vg_name,
}
static int vg_backup_single(struct cmd_context *cmd, const char *vg_name,
struct volume_group *vg, int consistent,
struct volume_group *vg,
void *handle)
{
char **last_filename = (char **)handle;
char *filename;
if (vg_read_error(vg) && !vg_read_error(vg) == FAILED_INCONSISTENT)
return ECMD_FAILED;
if (arg_count(cmd, file_ARG)) {
if (!(filename = _expand_filename(arg_value(cmd, file_ARG),
vg->name, last_filename))) {
@ -64,7 +67,7 @@ static int vg_backup_single(struct cmd_context *cmd, const char *vg_name,
if (!backup_to_file(filename, vg->cmd->cmd_line, vg))
return ECMD_FAILED;
} else {
if (!consistent) {
if (vg_read_error(vg) == FAILED_INCONSISTENT) {
log_error("No backup taken: specify filename with -f "
"to backup an inconsistent VG");
stack;
@ -90,8 +93,7 @@ int vgcfgbackup(struct cmd_context *cmd, int argc, char **argv)
init_pvmove(1);
ret = process_each_vg(cmd, argc, argv, LCK_VG_READ,
VG_INCONSISTENT_CONTINUE,
ret = process_each_vg(cmd, argc, argv, 0,
&last_filename, &vg_backup_single);
dm_free(last_filename);

View File

@ -521,15 +521,13 @@ static int _vgchange_refresh(struct cmd_context *cmd, struct volume_group *vg)
}
static int vgchange_single(struct cmd_context *cmd, const char *vg_name,
struct volume_group *vg, int consistent,
struct volume_group *vg,
void *handle __attribute((unused)))
{
int r = ECMD_FAILED;
if (!(vg_status(vg) & LVM_WRITE) && !arg_count(cmd, available_ARG)) {
log_error("Volume group \"%s\" is read-only", vg->name);
if (vg_read_error(vg))
return ECMD_FAILED;
}
if (vg_status(vg) & EXPORTED_VG) {
log_error("Volume group \"%s\" is exported", vg_name);
@ -620,7 +618,7 @@ int vgchange(struct cmd_context *cmd, int argc, char **argv)
return process_each_vg(cmd, argc, argv,
(arg_count(cmd, available_ARG)) ?
LCK_VG_READ : LCK_VG_WRITE,
VG_INCONSISTENT_REPAIR, NULL,
0 : READ_FOR_UPDATE,
NULL,
&vgchange_single);
}

View File

@ -18,7 +18,7 @@
static int vgck_single(struct cmd_context *cmd __attribute((unused)),
const char *vg_name,
struct volume_group *vg, int consistent,
struct volume_group *vg,
void *handle __attribute((unused)))
{
if (!vg_check_status(vg, EXPORTED_VG))
@ -32,7 +32,6 @@ static int vgck_single(struct cmd_context *cmd __attribute((unused)),
int vgck(struct cmd_context *cmd, int argc, char **argv)
{
return process_each_vg(cmd, argc, argv, LCK_VG_READ,
VG_INCONSISTENT_ABORT, NULL,
return process_each_vg(cmd, argc, argv, 0, NULL,
&vgck_single);
}

View File

@ -16,7 +16,7 @@
#include "tools.h"
static int vgconvert_single(struct cmd_context *cmd, const char *vg_name,
struct volume_group *vg, int consistent,
struct volume_group *vg,
void *handle __attribute((unused)))
{
struct physical_volume *pv, *existing_pv;
@ -32,6 +32,9 @@ static int vgconvert_single(struct cmd_context *cmd, const char *vg_name,
struct lvinfo info;
int active = 0;
if (vg_read_error(vg))
return ECMD_FAILED;
if (!vg_check_status(vg, LVM_WRITE | EXPORTED_VG))
return ECMD_FAILED;
@ -220,7 +223,6 @@ int vgconvert(struct cmd_context *cmd, int argc, char **argv)
return EINVALID_CMD_LINE;
}
return process_each_vg(cmd, argc, argv, LCK_VG_WRITE,
VG_INCONSISTENT_REPAIR, NULL,
return process_each_vg(cmd, argc, argv, READ_FOR_UPDATE, NULL,
&vgconvert_single);
}

View File

@ -16,10 +16,12 @@
#include "tools.h"
static int vgdisplay_single(struct cmd_context *cmd, const char *vg_name,
struct volume_group *vg, int consistent,
struct volume_group *vg,
void *handle __attribute((unused)))
{
/* FIXME Do the active check here if activevolumegroups_ARG ? */
if (vg_read_error(vg))
return ECMD_FAILED;
vg_check_status(vg, EXPORTED_VG);
@ -91,8 +93,7 @@ int vgdisplay(struct cmd_context *cmd, int argc, char **argv)
}
**********/
return process_each_vg(cmd, argc, argv, LCK_VG_READ,
VG_INCONSISTENT_CONTINUE, NULL,
return process_each_vg(cmd, argc, argv, 0, NULL,
vgdisplay_single);
/******** FIXME Need to count number processed

View File

@ -17,15 +17,14 @@
static int vgexport_single(struct cmd_context *cmd __attribute((unused)),
const char *vg_name,
struct volume_group *vg, int consistent,
struct volume_group *vg,
void *handle __attribute((unused)))
{
struct pv_list *pvl;
struct physical_volume *pv;
if (!vg_check_status(vg, EXPORTED_VG | LVM_WRITE)) {
if (vg_read_error(vg))
goto error;
}
if (lvs_in_vg_activated(vg)) {
log_error("Volume group \"%s\" has active logical volumes",
@ -68,7 +67,6 @@ int vgexport(struct cmd_context *cmd, int argc, char **argv)
return ECMD_FAILED;
}
return process_each_vg(cmd, argc, argv, LCK_VG_WRITE,
VG_INCONSISTENT_ABORT, NULL,
return process_each_vg(cmd, argc, argv, READ_FOR_UPDATE, NULL,
&vgexport_single);
}

View File

@ -17,12 +17,15 @@
static int vgimport_single(struct cmd_context *cmd __attribute((unused)),
const char *vg_name,
struct volume_group *vg, int consistent,
struct volume_group *vg,
void *handle __attribute((unused)))
{
struct pv_list *pvl;
struct physical_volume *pv;
if (vg_read_error(vg))
goto error;
if (!(vg_status(vg) & EXPORTED_VG)) {
log_error("Volume group \"%s\" is not exported", vg_name);
goto error;
@ -68,7 +71,8 @@ int vgimport(struct cmd_context *cmd, int argc, char **argv)
return ECMD_FAILED;
}
return process_each_vg(cmd, argc, argv, LCK_VG_WRITE,
VG_INCONSISTENT_ABORT, NULL,
return process_each_vg(cmd, argc, argv,
READ_FOR_UPDATE | READ_ALLOW_EXPORTED,
NULL,
&vgimport_single);
}

View File

@ -16,10 +16,10 @@
#include "tools.h"
static int vgremove_single(struct cmd_context *cmd, const char *vg_name,
struct volume_group *vg, int consistent,
struct volume_group *vg,
void *handle __attribute((unused)))
{
if (!vg_remove_single(cmd, vg_name, vg, consistent,
if (!vg_remove_single(cmd, vg_name, vg,
arg_count(cmd, force_ARG)))
return ECMD_FAILED;
@ -40,10 +40,8 @@ int vgremove(struct cmd_context *cmd, int argc, char **argv)
return ECMD_FAILED;
}
ret = process_each_vg(cmd, argc, argv, LCK_VG_WRITE,
arg_count(cmd, force_ARG) ?
VG_INCONSISTENT_REPAIR :
VG_INCONSISTENT_ABORT,
ret = process_each_vg(cmd, argc, argv,
READ_FOR_UPDATE | LOCK_NONBLOCKING,
NULL, &vgremove_single);
unlock_vg(cmd, VG_ORPHANS);

View File

@ -16,9 +16,12 @@
#include "tools.h"
static int vgscan_single(struct cmd_context *cmd, const char *vg_name,
struct volume_group *vg, int consistent,
struct volume_group *vg,
void *handle __attribute((unused)))
{
if (vg_read_error(vg))
return ECMD_FAILED;
log_print("Found %svolume group \"%s\" using metadata type %s",
(vg_status(vg) & EXPORTED_VG) ? "exported " : "", vg_name,
vg->fid->fmt->name);
@ -47,8 +50,7 @@ int vgscan(struct cmd_context *cmd, int argc, char **argv)
log_print("Reading all physical volumes. This may take a while...");
maxret = process_each_vg(cmd, argc, argv, LCK_VG_READ,
VG_INCONSISTENT_REPAIR, NULL,
maxret = process_each_vg(cmd, argc, argv, 0, NULL,
&vgscan_single);
if (arg_count(cmd, mknodes_ARG)) {