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drbd: New handler: initial-split-brain 

Some wish to be notified of all instances of split brain, not just those that
go unresolved.  The initial-split-brain handler is called to notify someone
upon  detection of all split brain conditions even if auto-recovery policies
are configured.

Signed-off-by: Adam Gandelman <adam.gandelman@linbit.com>
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
hifive-unleashed-5.1
Adam Gandelman 2010-04-08 16:48:23 -07:00 committed by Philipp Reisner
parent 979f5c7f1f
commit 3a11a48789
1 changed files with 4 additions and 1 deletions
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5
drivers/block/drbd/drbd_receiver.c
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@ -2487,6 +2487,9 @@ static enum drbd_conns drbd_sync_handshake(struct drbd_conf *mdev, enum drbd_rol
hg > 0 ? "source" : "target");
}
if (abs(hg) == 100)
drbd_khelper(mdev, "initial-split-brain");
if (hg == 100 || (hg == -100 && mdev->net_conf->always_asbp)) {
int pcount = (mdev->state.role == R_PRIMARY)
+ (peer_role == R_PRIMARY);
@ -2532,7 +2535,7 @@ static enum drbd_conns drbd_sync_handshake(struct drbd_conf *mdev, enum drbd_rol
* after an attempted attach on a diskless node.
* We just refuse to attach -- well, we drop the "connection"
* to that disk, in a way... */
dev_alert(DEV, "Split-Brain detected, dropping connection!\n");
dev_alert(DEV, "Split-Brain detected but unresolved, dropping connection!\n");
drbd_khelper(mdev, "split-brain");
return C_MASK;
}