summaryrefslogtreecommitdiff
path: root/Documentation/device-mapper
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/device-mapper')
-rw-r--r--Documentation/device-mapper/snapshot.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/device-mapper/snapshot.txt b/Documentation/device-mapper/snapshot.txt
index ad6949bff2e3..b8bbb516f989 100644
--- a/Documentation/device-mapper/snapshot.txt
+++ b/Documentation/device-mapper/snapshot.txt
@@ -49,6 +49,10 @@ The difference between persistent and transient is with transient
snapshots less metadata must be saved on disk - they can be kept in
memory by the kernel.
+When loading or unloading the snapshot target, the corresponding
+snapshot-origin or snapshot-merge target must be suspended. A failure to
+suspend the origin target could result in data corruption.
+
* snapshot-merge <origin> <COW device> <persistent> <chunksize>