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activation: extend resume validation

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Check also all snapshosts when resume is requested,
the origin volume is already resume, but possibly
some subLV or snapshot LV could be suspended if
we are still in critical_section.
This commit is contained in:
Zdenek Kabelac 2017-11-28 23:11:20 +01:00
parent c086dfadc3
commit e4db42e476
1 changed files with 15 additions and 6 deletions
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21
lib/activate/activate.c
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@ -2311,6 +2311,11 @@ static int _check_suspended_lv(struct logical_volume *lv, void *data)
return 0; /* There is suspended subLV in the tree */
}
if (lv_layer(lv) && lv_info(lv->vg->cmd, lv, 1, &info, 0, 0) && info.exists && info.suspended) {
log_debug("Found suspended layered LV %s in critical section().", display_lvname(lv));
return 0; /* There is suspended subLV in the tree */
}
return 1;
}
@ -2319,6 +2324,7 @@ static int _lv_resume(struct cmd_context *cmd, const char *lvid_s,
const struct logical_volume *lv)
{
const struct logical_volume *lv_to_free = NULL;
struct dm_list *snh;
struct lvinfo info;
int r = 0;
@ -2360,18 +2366,21 @@ static int _lv_resume(struct cmd_context *cmd, const char *lvid_s,
critical_section_dec(cmd, "resumed");
if (!info.suspended && critical_section()) {
/* check if any subLV is suspended */
if ((r = for_each_sub_lv((struct logical_volume *)lv, &_check_suspended_lv, NULL))) {
/* Everything seems resumed */
log_debug_activation("LV %s not suspended.", display_lvname(lv));
goto out;
/* Validation check if any subLV is suspended */
if (!laopts->origin_only && lv_is_origin(lv)) {
/* Check all snapshots for this origin LV */
dm_list_iterate(snh, &lv->snapshot_segs)
if (!_check_suspended_lv(dm_list_struct_base(snh, struct lv_segment, origin_list)->cow, NULL))
goto needs_resume; /* Found suspended snapshot */
}
if ((r = for_each_sub_lv((struct logical_volume *)lv, &_check_suspended_lv, NULL)))
goto out; /* Nothing was found suspended */
} else {
r = 1;
goto out;
}
}
needs_resume:
laopts->read_only = _passes_readonly_filter(cmd, lv);
laopts->resuming = 1;