From 873b0d5f98ab70e4df7a62b2ef0305373f88f330 Mon Sep 17 00:00:00 2001 From: Lars Ellenberg Date: Fri, 21 Jan 2011 22:53:48 +0100 Subject: [PATCH] drbd: serialize admin requests for new verify run with pending bitmap io This is an addendum to drbd: serialize admin requests for new resync with pending bitmap io It avoids a race that could trigger "FIXME" assert log messages. Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- drivers/block/drbd/drbd_nl.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c index bc0bcb96460..87aaa7fc4d2 100644 --- a/drivers/block/drbd/drbd_nl.c +++ b/drivers/block/drbd/drbd_nl.c @@ -2106,6 +2106,11 @@ static int drbd_nl_start_ov(struct drbd_conf *mdev, struct drbd_nl_cfg_req *nlp, reply->ret_code = ERR_MANDATORY_TAG; return 0; } + + /* If there is still bitmap IO pending, e.g. previous resync or verify + * just being finished, wait for it before requesting a new resync. */ + wait_event(mdev->misc_wait, !test_bit(BITMAP_IO, &mdev->flags)); + /* w_make_ov_request expects position to be aligned */ mdev->ov_start_sector = args.start_sector & ~BM_SECT_PER_BIT; reply->ret_code = drbd_request_state(mdev,NS(conn,C_VERIFY_S)); -- 2.39.5