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Introduce revert_lv for better pvmove cleanup.

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(One further fix needed to remove the stray pvmove LVs left behind.)
This commit is contained in:
Alasdair Kergon 2011-09-27 22:43:40 +00:00
parent 74e72bd75d
commit 10d0d9c7c4
12 changed files with 59 additions and 19 deletions
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1
WHATS_NEW
View File

@ -1,5 +1,6 @@
Version 2.02.89 -
==================================
Introduce revert_lv for better pvmove cleanup.
Replace incomplete pvmove activation failure recovery code with a message.
Abort if _finish_pvmove suspend_lvs fails instead of cleaning up incompletely.
Change suspend_lvs to call vg_revert internally.

5
daemons/clvmd/lvm-functions.c
View File

@ -406,7 +406,7 @@ error:
/* Resume the LV if it was active */
static int do_resume_lv(char *resource, unsigned char lock_flags)
{
int oldmode, origin_only, exclusive;
int oldmode, origin_only, exclusive, revert;
/* Is it open ? */
oldmode = get_current_lock(resource);
@ -416,8 +416,9 @@ static int do_resume_lv(char *resource, unsigned char lock_flags)
}
origin_only = (lock_flags & LCK_ORIGIN_ONLY_MODE) ? 1 : 0;
exclusive = (oldmode == LCK_EXCL) ? 1 : 0;
revert = (lock_flags & LCK_REVERT_MODE) ? 1 : 0;
if (!lv_resume_if_active(cmd, resource, origin_only, exclusive))
if (!lv_resume_if_active(cmd, resource, origin_only, exclusive, revert))
return EIO;
return 0;

15
lib/activate/activate.c
View File

@ -190,7 +190,7 @@ int lv_resume(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only)
return 1;
}
int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s,
unsigned origin_only, unsigned exclusive)
unsigned origin_only, unsigned exclusive, unsigned revert)
{
return 1;
}
@ -1356,14 +1356,16 @@ static int _lv_resume(struct cmd_context *cmd, const char *lvid_s,
laopts->origin_only = 0;
if (test_mode()) {
_skip("Resuming %s%s.", lv->name, laopts->origin_only ? " without snapshots" : "");
_skip("Resuming %s%s%s.", lv->name, laopts->origin_only ? " without snapshots" : "",
laopts->revert ? " (reverting)" : "");
r = 1;
goto out;
}
log_debug("Resuming LV %s/%s%s%s.", lv->vg->name, lv->name,
log_debug("Resuming LV %s/%s%s%s%s.", lv->vg->name, lv->name,
error_if_not_active ? "" : " if active",
laopts->origin_only ? " without snapshots" : "");
laopts->origin_only ? " without snapshots" : "",
laopts->revert ? " (reverting)" : "");
if (!lv_info(cmd, lv, laopts->origin_only, &info, 0, 0))
goto_out;
@ -1395,7 +1397,7 @@ out:
/* Returns success if the device is not active */
int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s,
unsigned origin_only, unsigned exclusive)
unsigned origin_only, unsigned exclusive, unsigned revert)
{
struct lv_activate_opts laopts = {
.origin_only = origin_only,
@ -1404,7 +1406,8 @@ int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s,
* non-clustered target should be used. This only happens
* if exclusive is set.
*/
.exclusive = exclusive
.exclusive = exclusive,
.revert = revert
};
return _lv_resume(cmd, lvid_s, &laopts, 0);

3
lib/activate/activate.h
View File

@ -34,6 +34,7 @@ struct lv_activate_opts {
int exclusive;
int origin_only;
int no_merging;
unsigned revert;
};
/* target attribute flags */
@ -63,7 +64,7 @@ void activation_exit(void);
int lv_suspend_if_active(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only);
int lv_resume(struct cmd_context *cmd, const char *lvid_s, unsigned origin_only);
int lv_resume_if_active(struct cmd_context *cmd, const char *lvid_s,
unsigned origin_only, unsigned exclusive);
unsigned origin_only, unsigned exclusive, unsigned revert);
int lv_activate(struct cmd_context *cmd, const char *lvid_s, int exclusive);
int lv_activate_with_filter(struct cmd_context *cmd, const char *lvid_s,
int exclusive);

2
lib/activate/dev_manager.c
View File

@ -1590,7 +1590,7 @@ static int _add_new_lv_to_dtree(struct dev_manager *dm, struct dm_tree *dtree,
layer ? UINT32_C(0) : (uint32_t) lv->major,
layer ? UINT32_C(0) : (uint32_t) lv->minor,
_read_only_lv(lv),
(lv->vg->status & PRECOMMITTED) ? 1 : 0,
((lv->vg->status & PRECOMMITTED) | laopts->revert) ? 1 : 0,
lvlayer,
_get_udev_flags(dm, lv, layer))))
return_0;

3
lib/locking/cluster_locking.c
View File

@ -327,6 +327,9 @@ static int _lock_for_cluster(struct cmd_context *cmd, unsigned char clvmd_cmd,
if (flags & LCK_ORIGIN_ONLY)
args[1] |= LCK_ORIGIN_ONLY_MODE;
if (flags & LCK_REVERT)
args[1] |= LCK_REVERT_MODE;
if (mirror_in_sync())
args[1] |= LCK_MIRROR_NOSYNC_MODE;

5
lib/locking/file_locking.c
View File

@ -257,6 +257,7 @@ static int _file_lock_resource(struct cmd_context *cmd, const char *resource,
{
char lockfile[PATH_MAX];
unsigned origin_only = (flags & LCK_ORIGIN_ONLY) ? 1 : 0;
unsigned revert = (flags & LCK_REVERT) ? 1 : 0;
switch (flags & LCK_SCOPE_MASK) {
case LCK_VG:
@ -292,8 +293,8 @@ static int _file_lock_resource(struct cmd_context *cmd, const char *resource,
case LCK_LV:
switch (flags & LCK_TYPE_MASK) {
case LCK_UNLOCK:
log_very_verbose("Unlocking LV %s%s", resource, origin_only ? " without snapshots" : "");
if (!lv_resume_if_active(cmd, resource, origin_only, 0))
log_very_verbose("Unlocking LV %s%s%s", resource, origin_only ? " without snapshots" : "", revert ? " (reverting)" : "");
if (!lv_resume_if_active(cmd, resource, origin_only, 0, revert))
return 0;
break;
case LCK_NULL:

16
lib/locking/locking.c
View File

@ -493,6 +493,20 @@ int resume_lvs(struct cmd_context *cmd, struct dm_list *lvs)
return r;
}
/* Unlock and revert list of LVs */
int revert_lvs(struct cmd_context *cmd, struct dm_list *lvs)
{
struct lv_list *lvl;
int r = 1;
dm_list_iterate_items(lvl, lvs)
if (!revert_lv(cmd, lvl->lv)) {
r = 0;
stack;
}
return r;
}
/*
* Lock a list of LVs.
* On failure to lock any LV, calls vg_revert() if vg_to_revert is set and
@ -511,7 +525,7 @@ int suspend_lvs(struct cmd_context *cmd, struct dm_list *lvs,
vg_revert(vg_to_revert);
dm_list_uniterate(lvh, lvs, &lvl->list) {
lvl = dm_list_item(lvh, struct lv_list);
if (!resume_lv(cmd, lvl->lv))
if (!revert_lv(cmd, lvl->lv))
stack;
}

4
lib/locking/locking.h
View File

@ -97,6 +97,7 @@ int check_lvm1_vg_inactive(struct cmd_context *cmd, const char *vgname);
#define LCK_CLUSTER_VG 0x00000080U /* VG is clustered */
#define LCK_CACHE 0x00000100U /* Operation on cache only using P_ lock */
#define LCK_ORIGIN_ONLY 0x00000200U /* Operation should bypass any snapshots */
#define LCK_REVERT 0x00000400U /* Revert any incomplete change */
/*
* Additional lock bits for cluster communication via args[1]
@ -107,6 +108,7 @@ int check_lvm1_vg_inactive(struct cmd_context *cmd, const char *vgname);
#define LCK_CONVERT 0x08 /* Convert existing lock */
#define LCK_ORIGIN_ONLY_MODE 0x20 /* Same as above */
#define LCK_TEST_MODE 0x10 /* Test mode: No activation */
#define LCK_REVERT_MODE 0x40 /* Remove inactive tables */
/*
* Special cases of VG locks.
@ -164,6 +166,7 @@ int check_lvm1_vg_inactive(struct cmd_context *cmd, const char *vgname);
#define resume_lv(cmd, lv) lock_lv_vol(cmd, lv, LCK_LV_RESUME)
#define resume_lv_origin(cmd, lv) lock_lv_vol(cmd, lv, LCK_LV_RESUME | LCK_ORIGIN_ONLY)
#define revert_lv(cmd, lv) lock_lv_vol(cmd, lv, LCK_LV_RESUME | LCK_REVERT)
#define suspend_lv(cmd, lv) lock_lv_vol(cmd, lv, LCK_LV_SUSPEND | LCK_HOLD)
#define suspend_lv_origin(cmd, lv) lock_lv_vol(cmd, lv, LCK_LV_SUSPEND | LCK_HOLD | LCK_ORIGIN_ONLY)
#define deactivate_lv(cmd, lv) lock_lv_vol(cmd, lv, LCK_LV_DEACTIVATE)
@ -191,6 +194,7 @@ struct volume_group;
int suspend_lvs(struct cmd_context *cmd, struct dm_list *lvs,
struct volume_group *vg_to_revert);
int resume_lvs(struct cmd_context *cmd, struct dm_list *lvs);
int revert_lvs(struct cmd_context *cmd, struct dm_list *lvs);
int activate_lvs(struct cmd_context *cmd, struct dm_list *lvs, unsigned exclusive);
/* Interrupt handling */

2
lib/locking/no_locking.c
View File

@ -46,7 +46,7 @@ static int _no_lock_resource(struct cmd_context *cmd, const char *resource,
case LCK_NULL:
return lv_deactivate(cmd, resource);
case LCK_UNLOCK:
return lv_resume_if_active(cmd, resource, (flags & LCK_ORIGIN_ONLY) ? 1: 0, 0);
return lv_resume_if_active(cmd, resource, (flags & LCK_ORIGIN_ONLY) ? 1: 0, 0, (flags & LCK_REVERT) ? 1 : 0);
case LCK_READ:
return lv_activate_with_filter(cmd, resource, 0);
case LCK_WRITE:

2
libdm/libdm-deptree.c
View File

@ -610,6 +610,8 @@ static int _node_clear_table(struct dm_tree_node *dnode)
if (!info->exists || !info->inactive_table)
return 1;
// FIXME Get inactive deps. If any dev referenced has 1 opener and no live table, remove it after the clear.
log_verbose("Clearing inactive table %s (%" PRIu32 ":%" PRIu32 ")",
name, info->major, info->minor);

18
tools/pvmove.c
View File

@ -370,13 +370,19 @@ static int _update_metadata(struct cmd_context *cmd, struct volume_group *vg,
if (!_suspend_lvs(cmd, first_time, lv_mirr, lvs_changed, vg)) {
log_error("ABORTING: Volume group metadata update failed.");
goto out;
if (!first_time && !revert_lv(cmd, lv_mirr))
stack;
return 0;
}
/* Commit on-disk metadata */
if (!vg_commit(vg)) {
log_error("ABORTING: Volume group metadata update failed.");
goto out;
if (!_resume_lvs(cmd, first_time, lv_mirr, lvs_changed))
stack;
if (!first_time && !revert_lv(cmd, lv_mirr))
stack;
return 0;
}
/* Activate the temporary mirror LV */
@ -403,7 +409,9 @@ out:
if (!_resume_lvs(cmd, first_time, lv_mirr, lvs_changed))
r = 0;
if (r)
backup(vg);
return r;
}
@ -546,6 +554,8 @@ static int _finish_pvmove(struct cmd_context *cmd, struct volume_group *vg,
/* Suspend LVs changed (implicitly suspends lv_mirr) */
if (!suspend_lvs(cmd, lvs_changed, vg)) {
log_error("ABORTING: Locking LVs to remove temporary mirror failed");
if (!revert_lv(cmd, lv_mirr))
stack;
return 0;
}
@ -553,9 +563,9 @@ static int _finish_pvmove(struct cmd_context *cmd, struct volume_group *vg,
if (!vg_commit(vg)) {
log_error("ABORTING: Failed to write new data locations "
"to disk.");
if (!resume_lv(cmd, lv_mirr))
if (!revert_lv(cmd, lv_mirr))
stack;
if (!resume_lvs(cmd, lvs_changed))
if (!revert_lvs(cmd, lvs_changed))
stack;
return 0;
}