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snapshot: check snapshot exists

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Return 0 if the LV is not even snapshot.
This commit is contained in:
Zdenek Kabelac 2014-06-16 12:41:30 +02:00
parent 435c82f8f6
commit c46d4a745d
1 changed files with 2 additions and 1 deletions
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3
lib/metadata/snapshot_manip.c
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@ -141,8 +141,9 @@ int lv_is_merging_origin(const struct logical_volume *origin)
int lv_is_merging_cow(const struct logical_volume *snapshot)
{
struct lv_segment *snap_seg = find_snapshot(snapshot);
/* checks lv_segment's status to see if cow is merging */
return (find_snapshot(snapshot)->status & MERGING) ? 1 : 0;
return (snap_seg && (snap_seg->status & MERGING)) ? 1 : 0;
}
struct lv_segment *find_snapshot(const struct logical_volume *lv)