Commit f735e363 authored Dec 17, 2010 by Lars Ellenberg Committed by Philipp Reisner Mar 10, 2011

drbd: add debugging assert to make sure the protocol is clean



We expect to only receive the recently introduced "set out of sync"
packets in specific states. If we receive them in different states, that
may confuse the resync process to the point where it won't terminate, or
think it made negative progress.

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

parent c88d65e2

drivers/block/drbd/drbd_receiver.c

+10 −0

Original line number	Diff line number	Diff line
		@@ -3599,6 +3599,16 @@ static int receive_out_of_sync(struct drbd_conf *mdev, enum drbd_packets cmd, un
		{
		struct p_block_desc *p = &mdev->data.rbuf.block_desc;

		switch (mdev->state.conn) {
		case C_WF_SYNC_UUID:
		case C_WF_BITMAP_T:
		case C_BEHIND:
		break;
		default:
		dev_err(DEV, "ASSERT FAILED cstate = %s, expected: WFSyncUUID\|WFBitMapT\|Behind\n",
		drbd_conn_str(mdev->state.conn));
		}

		drbd_set_out_of_sync(mdev, be64_to_cpu(p->sector), be32_to_cpu(p->blksize));

		return true;