From: Lars Ellenberg Date: Sat, 18 Dec 2010 16:00:59 +0000 (+0100) Subject: drbd: improve on bitmap write out timing X-Git-Tag: firefly_0821_release~7613^2~1765^2~47 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=06d33e968d2c58143a7aaafa8963cf6a58099467;p=firefly-linux-kernel-4.4.55.git drbd: improve on bitmap write out timing Even though we now track the need for bitmap writeout per bitmap page, there is no need to trigger the writeout while a resync is going on. Once the resync is finished (or aborted), we trigger bitmap writeout anyways. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c index f529c25e1ad5..755297a15633 100644 --- a/drivers/block/drbd/drbd_main.c +++ b/drivers/block/drbd/drbd_main.c @@ -1439,7 +1439,11 @@ static void after_state_ch(struct drbd_conf *mdev, union drbd_state os, put_ldev(mdev); } - if (os.role == R_PRIMARY && ns.role == R_SECONDARY && get_ldev(mdev)) { + /* Write out all changed bits on demote. + * Though, no need to da that just yet + * if there is a resync going on still */ + if (os.role == R_PRIMARY && ns.role == R_SECONDARY && + mdev->state.conn <= C_CONNECTED && get_ldev(mdev)) { drbd_bitmap_io_from_worker(mdev, &drbd_bm_write, "demote"); put_ldev(mdev); } @@ -1559,7 +1563,7 @@ static void after_state_ch(struct drbd_conf *mdev, union drbd_state os, if (os.disk < D_UP_TO_DATE && os.conn >= C_SYNC_SOURCE && ns.conn == C_CONNECTED) drbd_send_state(mdev); - if (os.conn > C_CONNECTED && ns.conn == C_CONNECTED) + if (os.conn > C_CONNECTED && ns.conn <= C_CONNECTED) drbd_queue_bitmap_io(mdev, &drbd_bm_write, NULL, "write from resync_finished"); /* free tl_hash if we Got thawed and are C_STANDALONE */