diff options
| author | Lars Ellenberg <lars.ellenberg@linbit.com> | 2014-11-10 17:21:12 +0100 |
|---|---|---|
| committer | Jens Axboe <axboe@fb.com> | 2014-11-10 09:27:37 -0700 |
| commit | ff8bd88b73fad369a12465dfa52ad5c0bf088ced (patch) | |
| tree | f142942ea9b5529bc82591da749eee816f56d4bc /drivers/block | |
| parent | a88215312c5ed74697973f6c9f0fce718bcf18ad (diff) | |
| download | linux-stable-ff8bd88b73fad369a12465dfa52ad5c0bf088ced.tar.gz linux-stable-ff8bd88b73fad369a12465dfa52ad5c0bf088ced.tar.bz2 linux-stable-ff8bd88b73fad369a12465dfa52ad5c0bf088ced.zip | |
drbd: fix resync throttling initialization
If for some reason DRBD resync was the only activity on a backend
device, drbd_rs_c_min_rate_throttle() would mistakenly decide that it is
still initialization time, and keep throttling the resync.
This patch explicitly initializes ->rs_last_events to the current
backend event counters, and drops the rs_last_events == 0 from the
throttle condition.
Reported-by: Mikhail Sugakov <msugakov@amazon.de>
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Signed-off-by: Jens Axboe <axboe@fb.com>
Diffstat (limited to 'drivers/block')
| -rw-r--r-- | drivers/block/drbd/drbd_receiver.c | 2 | ||||
| -rw-r--r-- | drivers/block/drbd/drbd_state.c | 1 | ||||
| -rw-r--r-- | drivers/block/drbd/drbd_worker.c | 5 |
3 files changed, 5 insertions, 3 deletions
diff --git a/drivers/block/drbd/drbd_receiver.c b/drivers/block/drbd/drbd_receiver.c index 6960fb064731..d169b4a79267 100644 --- a/drivers/block/drbd/drbd_receiver.c +++ b/drivers/block/drbd/drbd_receiver.c @@ -2482,7 +2482,7 @@ bool drbd_rs_c_min_rate_throttle(struct drbd_device *device) atomic_read(&device->rs_sect_ev); if (atomic_read(&device->ap_actlog_cnt) - || !device->rs_last_events || curr_events - device->rs_last_events > 64) { + || curr_events - device->rs_last_events > 64) { unsigned long rs_left; int i; diff --git a/drivers/block/drbd/drbd_state.c b/drivers/block/drbd/drbd_state.c index 4529d9282cef..2d7dd269b6a8 100644 --- a/drivers/block/drbd/drbd_state.c +++ b/drivers/block/drbd/drbd_state.c @@ -1099,7 +1099,6 @@ __drbd_set_state(struct drbd_device *device, union drbd_state ns, set_ov_position(device, ns.conn); device->rs_start = now; - device->rs_last_events = 0; device->rs_last_sect_ev = 0; device->ov_last_oos_size = 0; device->ov_last_oos_start = 0; diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c index d2d1f97511bd..d0fae55d871d 100644 --- a/drivers/block/drbd/drbd_worker.c +++ b/drivers/block/drbd/drbd_worker.c @@ -1592,11 +1592,15 @@ void drbd_resync_after_changed(struct drbd_device *device) void drbd_rs_controller_reset(struct drbd_device *device) { + struct gendisk *disk = device->ldev->backing_bdev->bd_contains->bd_disk; struct fifo_buffer *plan; atomic_set(&device->rs_sect_in, 0); atomic_set(&device->rs_sect_ev, 0); device->rs_in_flight = 0; + device->rs_last_events = + (int)part_stat_read(&disk->part0, sectors[0]) + + (int)part_stat_read(&disk->part0, sectors[1]); /* Updating the RCU protected object in place is necessary since this function gets called from atomic context. @@ -1743,7 +1747,6 @@ void drbd_start_resync(struct drbd_device *device, enum drbd_conns side) device->rs_failed = 0; device->rs_paused = 0; device->rs_same_csum = 0; - device->rs_last_events = 0; device->rs_last_sect_ev = 0; device->rs_total = tw; device->rs_start = now; |