shaba/lvm2
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mirror: properly reload table for log init

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Since mirror can be stacked, we need to properly reload whole
table stack, otherwice we may mishandle devices in dm table.
This commit is contained in:
Zdenek Kabelac 2018-03-29 23:26:22 +02:00
parent 55d83f9f6e
commit 1693fef529
2 changed files with 12 additions and 4 deletions
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2
WHATS_NEW
View File

@ -1,5 +1,7 @@
Version 2.02.178 -
=====================================
Reload whole device stack when reinitilizing mirror log.
Mirrors without monitoring are WARNING and not blocking on error.
Detect too big region_size with clustered mirrors.
Fix evaluation of maximal region size for mirror log.
Enhance mirror log size estimation and use smaller size when possible.

14
lib/metadata/mirror.c
View File

@ -315,6 +315,7 @@ static int _write_log_header(struct cmd_context *cmd, struct logical_volume *lv)
* Initialize mirror log contents
*/
static int _init_mirror_log(struct cmd_context *cmd,
struct logical_volume *lock_holder,
struct logical_volume *log_lv, int in_sync,
struct dm_list *tagsl, int remove_on_failure)
{
@ -346,7 +347,10 @@ static int _init_mirror_log(struct cmd_context *cmd,
}
/* store mirror log on disk(s) */
if (!vg_write(log_lv->vg) || !vg_commit(log_lv->vg))
if (!lock_holder) {
if (!vg_write(log_lv->vg) || !vg_commit(log_lv->vg))
return_0;
} else if (!lv_update_and_reload((struct logical_volume*) lock_holder))
return_0;
if (!activate_lv_excl_local(cmd, log_lv)) {
@ -1021,7 +1025,9 @@ static int _remove_mirror_images(struct logical_volume *lv,
/* Mirror with only 1 area is 'in sync'. */
if (new_area_count == 1 && is_temporary_mirror_layer(lv)) {
detached_log_lv = detach_mirror_log(mirrored_seg);
if (!_init_mirror_log(lv->vg->cmd, detached_log_lv,
if (!_init_mirror_log(lv->vg->cmd,
(struct logical_volume*)lv_lock_holder(mirrored_seg->lv),
detached_log_lv,
1, &lv->tags, 0)) {
/* As a result, unnecessary sync may run after
* collapsing. But safe.*/
@ -1822,7 +1828,7 @@ static struct logical_volume *_set_up_mirror_log(struct cmd_context *cmd,
}
}
if (!_init_mirror_log(cmd, log_lv, in_sync, &lv->tags, 1)) {
if (!_init_mirror_log(cmd, NULL, log_lv, in_sync, &lv->tags, 1)) {
log_error("Failed to initialise mirror log.");
return NULL;
}
@ -1870,7 +1876,7 @@ struct logical_volume *prepare_mirror_log(struct logical_volume *lv,
goto out;
}
if (!_init_mirror_log(cmd, log_lv, in_sync, &lv->tags, 1)) {
if (!_init_mirror_log(cmd, NULL, log_lv, in_sync, &lv->tags, 1)) {
log_error("Failed to initialise mirror log.");
log_lv = NULL;
goto out;