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-rw-r--r--drivers/block/drbd/drbd_main.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index fd308864833f..ce6a764e905b 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -745,6 +745,9 @@ is_valid_state(struct drbd_conf *mdev, union drbd_state ns)
mdev->agreed_pro_version < 88)
rv = SS_NOT_SUPPORTED;
+ else if (ns.conn >= C_CONNECTED && ns.pdsk == D_UNKNOWN)
+ rv = SS_CONNECTED_OUTDATES;
+
return rv;
}