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drbd: Ensure that the peer was not rebootet in the meantime before resending TL 

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
This commit is contained in:
Philipp Reisner 2010-06-22 14:03:27 +02:00
parent 43a5182ccc
commit 481c6f5032
3 changed files with 13 additions and 5 deletions
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3
drivers/block/drbd/drbd_nl.c
View File

@ -208,9 +208,6 @@ enum drbd_disk_state drbd_try_outdate_peer(struct drbd_conf *mdev)
return mdev->state.pdsk;
}
if (fp == FP_STONITH)
_drbd_request_state(mdev, NS(susp, 1), CS_WAIT_COMPLETE);
r = drbd_khelper(mdev, "fence-peer");
switch ((r>>8) & 0xff) {

13
drivers/block/drbd/drbd_receiver.c
View File

@ -3265,7 +3265,18 @@ static int receive_state(struct drbd_conf *mdev, struct p_header *h)
ns.peer_isp = (peer_state.aftr_isp | peer_state.user_isp);
if ((nconn == C_CONNECTED || nconn == C_WF_BITMAP_S) && ns.disk == D_NEGOTIATING)
ns.disk = mdev->new_state_tmp.disk;
if (ns.pdsk == D_CONSISTENT && ns.susp && nconn == C_CONNECTED && oconn < C_CONNECTED &&
test_bit(NEW_CUR_UUID, &mdev->flags)) {
/* Do not allow tl_restart(resend) for a rebooted peer. We can only allow this
for temporal network outages! */
spin_unlock_irq(&mdev->req_lock);
dev_err(DEV, "Aborting Connect, can not thaw IO with an only Consistent peer\n");
tl_clear(mdev);
drbd_uuid_new_current(mdev);
clear_bit(NEW_CUR_UUID, &mdev->flags);
drbd_force_state(mdev, NS2(conn, C_PROTOCOL_ERROR, susp, 0));
return FALSE;
}
rv = _drbd_set_state(mdev, ns, CS_VERBOSE | CS_HARD, NULL);
ns = mdev->state;
spin_unlock_irq(&mdev->req_lock);

2
drivers/block/drbd/drbd_req.c
View File

@ -662,7 +662,7 @@ int __req_mod(struct drbd_request *req, enum drbd_req_event what,
/* If RQ_NET_OK is already set, we got a P_WRITE_ACK or P_RECV_ACK
before the connection loss (B&C only); only P_BARRIER_ACK was missing.
Trowing them out of the TL here by pretending we got a BARRIER_ACK
TODO: Either resync them, or ensure peer was not rebooted. */
We ensure that the peer was not rebooted */
if (!(req->rq_state & RQ_NET_OK)) {
if (req->w.cb) {
drbd_queue_work(&mdev->data.work, &req->w);