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activate: Hide errors when snapshot merge delayed.

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This commit is contained in:
Alasdair G Kergon 2016-04-21 22:14:10 +01:00
parent 4d095c2fbb
commit 01181a299e
7 changed files with 30 additions and 18 deletions
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1
WHATS_NEW
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@ -1,5 +1,6 @@
Version 2.02.151 -
=================================
Suppress errors when snapshot merge gets delayed because volume is in use.
Avoid internal snapshot LV names in messages.
Autodetect and use /run/lock dir when available instead of /var/lock.
lvchange --refresh for merging thin origin will retry to deactivate snapshot.

29
lib/activate/activate.c
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@ -763,7 +763,8 @@ int lv_info_with_seg_status(struct cmd_context *cmd, const struct logical_volume
#define OPEN_COUNT_CHECK_RETRIES 25
#define OPEN_COUNT_CHECK_USLEEP_DELAY 200000
int lv_check_not_in_use(const struct logical_volume *lv)
/* Only report error if error_if_used is set */
int lv_check_not_in_use(const struct logical_volume *lv, int error_if_used)
{
struct lvinfo info;
unsigned int open_count_check_retries;
@ -774,14 +775,22 @@ int lv_check_not_in_use(const struct logical_volume *lv)
/* If sysfs is not used, use open_count information only. */
if (dm_sysfs_dir()) {
if (dm_device_has_holders(info.major, info.minor)) {
log_error("Logical volume %s is used by another device.",
display_lvname(lv));
if (error_if_used)
log_error("Logical volume %s is used by another device.",
display_lvname(lv));
else
log_debug_activation("Logical volume %s is used by another device.",
display_lvname(lv));
return 0;
}
if (dm_device_has_mounted_fs(info.major, info.minor)) {
log_error("Logical volume %s contains a filesystem in use.",
display_lvname(lv));
if (error_if_used)
log_error("Logical volume %s contains a filesystem in use.",
display_lvname(lv));
else
log_debug_activation("Logical volume %s contains a filesystem in use.",
display_lvname(lv));
return 0;
}
}
@ -789,8 +798,10 @@ int lv_check_not_in_use(const struct logical_volume *lv)
open_count_check_retries = retry_deactivation() ? OPEN_COUNT_CHECK_RETRIES : 1;
while (info.open_count > 0 && open_count_check_retries--) {
if (!open_count_check_retries) {
log_error("Logical volume %s in use.",
display_lvname(lv));
if (error_if_used)
log_error("Logical volume %s in use.", display_lvname(lv));
else
log_debug_activation("Logical volume %s in use.", display_lvname(lv));
return 0;
}
@ -2118,7 +2129,7 @@ static int _lv_has_open_snapshots(const struct logical_volume *lv)
int r = 0;
dm_list_iterate_items_gen(snap_seg, &lv->snapshot_segs, origin_list)
if (!lv_check_not_in_use(snap_seg->cow))
if (!lv_check_not_in_use(snap_seg->cow, 1))
r++;
if (r)
@ -2172,7 +2183,7 @@ int lv_deactivate(struct cmd_context *cmd, const char *lvid_s, const struct logi
if (lv_is_visible(lv) || lv_is_virtual_origin(lv) ||
lv_is_merging_thin_snapshot(lv)) {
if (!lv_check_not_in_use(lv))
if (!lv_check_not_in_use(lv, 1))
goto_out;
if (lv_is_origin(lv) && _lv_has_open_snapshots(lv))

2
lib/activate/activate.h
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@ -147,7 +147,7 @@ int lv_info_with_seg_status(struct cmd_context *cmd, const struct logical_volume
struct lv_with_info_and_seg_status *status,
int with_open_count, int with_read_ahead);
int lv_check_not_in_use(const struct logical_volume *lv);
int lv_check_not_in_use(const struct logical_volume *lv, int error_if_used);
/*
* Returns 1 if activate_lv has been set: 1 = activate; 0 = don't.

2
lib/metadata/lv_manip.c
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@ -5802,7 +5802,7 @@ int lv_remove_single(struct cmd_context *cmd, struct logical_volume *lv,
if (!lv_is_cache_pool(lv) && /* cache pool cannot be active */
lv_is_active(lv)) {
if (!lv_check_not_in_use(lv))
if (!lv_check_not_in_use(lv, 1))
return_0;
if ((force == PROMPT) &&

2
tools/lvchange.c
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@ -344,7 +344,7 @@ static int _lvchange_resync(struct cmd_context *cmd, struct logical_volume *lv)
}
if (lv_is_active_locally(lv)) {
if (!lv_check_not_in_use(lv)) {
if (!lv_check_not_in_use(lv, 1)) {
log_error("Can't resync open logical volume \"%s\"",
lv->name);
return 0;

10
tools/lvconvert.c
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@ -1876,7 +1876,7 @@ static int _lvconvert_splitsnapshot(struct cmd_context *cmd, struct logical_volu
}
if (lv_is_active_locally(cow)) {
if (!lv_check_not_in_use(cow))
if (!lv_check_not_in_use(cow, 1))
return_0;
if ((lp->force == PROMPT) && !lp->yes &&
@ -2232,11 +2232,11 @@ static int _lvconvert_merge_old_snapshot(struct cmd_context *cmd,
* being open.
*/
if (lv_is_active_locally(origin)) {
if (!lv_check_not_in_use(origin)) {
log_print_unless_silent("Can't merge over open origin volume.");
if (!lv_check_not_in_use(origin, 0)) {
log_print_unless_silent("Can't merge until origin volume is closed.");
merge_on_activate = 1;
} else if (!lv_check_not_in_use(lv)) {
log_print_unless_silent("Can't merge when snapshot is open.");
} else if (!lv_check_not_in_use(lv, 0)) {
log_print_unless_silent("Can't merge until snapshot is closed.");
merge_on_activate = 1;
}
} else if (vg_is_clustered(origin->vg) && lv_is_active(origin)) {

2
tools/vgchange.c
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@ -219,7 +219,7 @@ int vgchange_activate(struct cmd_context *cmd, struct volume_group *vg,
if (!do_activate && (lv_open = lvs_in_vg_opened(vg))) {
dm_list_iterate_items(lvl, &vg->lvs)
if (lv_is_visible(lvl->lv) &&
!lv_check_not_in_use(lvl->lv)) {
!lv_check_not_in_use(lvl->lv, 1)) {
log_error("Can't deactivate volume group \"%s\" with %d open "
"logical volume(s)", vg->name, lv_open);
return 0;