From 6c922ed543bee1bc6685ade07be59f3fa49a7288 Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Wed, 12 Jan 2011 11:51:13 +0100 Subject: drbd: only generate and send a new sync uuid after a successful state change Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- drivers/block/drbd/drbd_worker.c | 25 ++++++++++++------------- 1 file changed, 12 insertions(+), 13 deletions(-) (limited to 'drivers/block') diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c index 7b3d4dc4af84..ec42e04bb517 100644 --- a/drivers/block/drbd/drbd_worker.c +++ b/drivers/block/drbd/drbd_worker.c @@ -1544,24 +1544,23 @@ void drbd_start_resync(struct drbd_conf *mdev, enum drbd_conns side) } write_unlock_irq(&global_state_lock); - if (side == C_SYNC_TARGET) - mdev->bm_resync_fo = 0; - - /* Since protocol 96, we must serialize drbd_gen_and_send_sync_uuid - * with w_send_oos, or the sync target will get confused as to - * how much bits to resync. We cannot do that always, because for an - * empty resync and protocol < 95, we need to do it here, as we call - * drbd_resync_finished from here in that case. - * We drbd_gen_and_send_sync_uuid here for protocol < 96, - * and from after_state_ch otherwise. */ - if (side == C_SYNC_SOURCE && mdev->agreed_pro_version < 96) - drbd_gen_and_send_sync_uuid(mdev); - if (r == SS_SUCCESS) { dev_info(DEV, "Began resync as %s (will sync %lu KB [%lu bits set]).\n", drbd_conn_str(ns.conn), (unsigned long) mdev->rs_total << (BM_BLOCK_SHIFT-10), (unsigned long) mdev->rs_total); + if (side == C_SYNC_TARGET) + mdev->bm_resync_fo = 0; + + /* Since protocol 96, we must serialize drbd_gen_and_send_sync_uuid + * with w_send_oos, or the sync target will get confused as to + * how much bits to resync. We cannot do that always, because for an + * empty resync and protocol < 95, we need to do it here, as we call + * drbd_resync_finished from here in that case. + * We drbd_gen_and_send_sync_uuid here for protocol < 96, + * and from after_state_ch otherwise. */ + if (side == C_SYNC_SOURCE && mdev->agreed_pro_version < 96) + drbd_gen_and_send_sync_uuid(mdev); if (mdev->agreed_pro_version < 95 && mdev->rs_total == 0) { /* This still has a race (about when exactly the peers -- cgit v1.2.3-59-g8ed1b