From c4752ef1284519c3baa1c3b19df34a80b4905245 Mon Sep 17 00:00:00 2001 From: Philipp Reisner Date: Wed, 27 Oct 2010 17:32:36 +0200 Subject: [PATCH] drbd: When proxy's buffer drained off go into regular resync mode Signed-off-by: Philipp Reisner Signed-off-by: Lars Ellenberg --- drivers/block/drbd/drbd_int.h | 4 +++- drivers/block/drbd/drbd_main.c | 1 + drivers/block/drbd/drbd_receiver.c | 9 +++++++++ drivers/block/drbd/drbd_worker.c | 10 +++++++++- 4 files changed, 22 insertions(+), 2 deletions(-) diff --git a/drivers/block/drbd/drbd_int.h b/drivers/block/drbd/drbd_int.h index 471331236826..da02cce374c9 100644 --- a/drivers/block/drbd/drbd_int.h +++ b/drivers/block/drbd/drbd_int.h @@ -973,7 +973,8 @@ struct drbd_conf { struct drbd_work resync_work, unplug_work, go_diskless, - md_sync_work; + md_sync_work, + start_resync_work; struct timer_list resync_timer; struct timer_list md_sync_timer; #ifdef DRBD_DEBUG_MD_SYNC @@ -1546,6 +1547,7 @@ extern int w_prev_work_done(struct drbd_conf *, struct drbd_work *, int); extern int w_e_reissue(struct drbd_conf *, struct drbd_work *, int); extern int w_restart_disk_io(struct drbd_conf *, struct drbd_work *, int); extern int w_send_oos(struct drbd_conf *, struct drbd_work *, int); +extern int w_start_resync(struct drbd_conf *, struct drbd_work *, int); extern void resync_timer_fn(unsigned long data); diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c index 0dc93f43a476..f49505cf8d0f 100644 --- a/drivers/block/drbd/drbd_main.c +++ b/drivers/block/drbd/drbd_main.c @@ -2846,6 +2846,7 @@ void drbd_init_set_defaults(struct drbd_conf *mdev) INIT_LIST_HEAD(&mdev->unplug_work.list); INIT_LIST_HEAD(&mdev->go_diskless.list); INIT_LIST_HEAD(&mdev->md_sync_work.list); + INIT_LIST_HEAD(&mdev->start_resync_work.list); INIT_LIST_HEAD(&mdev->bm_io_work.w.list); mdev->resync_work.cb = w_resync_inactive; diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c index 04a08e7541cc..ee9238e59327 100644 --- a/drivers/block/drbd/drbd_receiver.c +++ b/drivers/block/drbd/drbd_receiver.c @@ -3279,6 +3279,7 @@ static int receive_sync_uuid(struct drbd_conf *mdev, enum drbd_packets cmd, unsi wait_event(mdev->misc_wait, mdev->state.conn == C_WF_SYNC_UUID || + mdev->state.conn == C_BEHIND || mdev->state.conn < C_CONNECTED || mdev->state.disk < D_NEGOTIATING); @@ -4338,6 +4339,14 @@ static int got_BarrierAck(struct drbd_conf *mdev, struct p_header80 *h) tl_release(mdev, p->barrier, be32_to_cpu(p->set_size)); + if (mdev->state.conn == C_AHEAD && + atomic_read(&mdev->ap_in_flight) == 0 && + list_empty(&mdev->start_resync_work.list)) { + struct drbd_work *w = &mdev->start_resync_work; + w->cb = w_start_resync; + drbd_queue_work_front(&mdev->data.work, w); + } + return TRUE; } diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c index 67499077c482..c9e7cb7c788a 100644 --- a/drivers/block/drbd/drbd_worker.c +++ b/drivers/block/drbd/drbd_worker.c @@ -742,6 +742,14 @@ static int w_make_ov_request(struct drbd_conf *mdev, struct drbd_work *w, int ca return 1; } + +int w_start_resync(struct drbd_conf *mdev, struct drbd_work *w, int cancel) +{ + drbd_start_resync(mdev, C_SYNC_SOURCE); + + return 1; +} + int w_ov_finished(struct drbd_conf *mdev, struct drbd_work *w, int cancel) { kfree(w); @@ -1472,7 +1480,7 @@ void drbd_start_resync(struct drbd_conf *mdev, enum drbd_conns side) union drbd_state ns; int r; - if (mdev->state.conn >= C_SYNC_SOURCE) { + if (mdev->state.conn >= C_SYNC_SOURCE && mdev->state.conn < C_AHEAD) { dev_err(DEV, "Resync already running!\n"); return; } -- 2.39.5