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snapshot: check it's still snapshot

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While polling for snapshot, detect first the snapshot still
exits.  It's valid to have multiple polling threads watching
for the same thing and just 1 can 'win' the finish part.
All others should nicely 'fail'.
This commit is contained in:
Zdenek Kabelac 2014-06-16 13:38:35 +02:00
parent a20de8af20
commit 435c82f8f6
1 changed files with 2 additions and 1 deletions
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3
tools/lvconvert.c
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@ -801,7 +801,8 @@ static progress_t _poll_merge_progress(struct cmd_context *cmd,
{
percent_t percent = PERCENT_0;
if (!lv_snapshot_percent(lv, &percent)) {
if (!lv_is_merging_origin(lv) ||
!lv_snapshot_percent(lv, &percent)) {
log_error("%s: Failed query for merging percentage. Aborting merge.", lv->name);
return PROGRESS_CHECK_FAILED;
} else if (percent == PERCENT_INVALID) {