Commit 9bd2eb2c authored by Lars Ellenberg's avatar Lars Ellenberg Committed by Jens Axboe

drbd: also bump UUIDs if a diskless primary connects

If for some reason the primary lost its disk *and* the replication link
before it is able to communicate the disk loss, probably blocked IO,
then later is able to re-establish the connection, the peer needs to
bump its UUIDs just like it does when peer only loses the disk
and is able to communicate this in time.

Otherwise, a later re-attach of the disk on the primary may start a
resync in the "wrong" direction.
Signed-off-by: default avatarPhilipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: default avatarLars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: default avatarJens Axboe <axboe@fb.com>
parent 05a72772
...@@ -1781,7 +1781,7 @@ static void after_state_ch(struct drbd_device *device, union drbd_state os, ...@@ -1781,7 +1781,7 @@ static void after_state_ch(struct drbd_device *device, union drbd_state os,
} }
if (ns.pdsk < D_INCONSISTENT && get_ldev(device)) { if (ns.pdsk < D_INCONSISTENT && get_ldev(device)) {
if (os.peer == R_SECONDARY && ns.peer == R_PRIMARY && if (os.peer != R_PRIMARY && ns.peer == R_PRIMARY &&
device->ldev->md.uuid[UI_BITMAP] == 0 && ns.disk >= D_UP_TO_DATE) { device->ldev->md.uuid[UI_BITMAP] == 0 && ns.disk >= D_UP_TO_DATE) {
drbd_uuid_new_current(device); drbd_uuid_new_current(device);
drbd_send_uuids(peer_device); drbd_send_uuids(peer_device);
......
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