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-rw-r--r--Documentation/md-cluster.txt6
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/md-cluster.txt b/Documentation/md-cluster.txt
index c100c7163507..38883276d31c 100644
--- a/Documentation/md-cluster.txt
+++ b/Documentation/md-cluster.txt
@@ -316,3 +316,9 @@ The algorithm is:
nodes are using the raid which is achieved by lock all bitmap
locks within the cluster, and also those locks are unlocked
accordingly.
+
+7. Unsupported features
+
+There are somethings which are not supported by cluster MD yet.
+
+- update size and change array_sectors.