diff options
| author | Lars Ellenberg | 2010-08-11 23:40:24 +0200 |
|---|---|---|
| committer | Philipp Reisner | 2010-10-14 18:38:20 +0200 |
| commit | 0f0601f4ea2f53cfd8bcae060fb03d9bbde070ec (patch) | |
| tree | 42bcbd8edf48c9cee526893108cc69b4918a9f64 /drivers/block/drbd/drbd_main.c | |
| parent | drbd: reduce code duplication when receiving data requests (diff) | |
| download | kernel-qcow2-linux-0f0601f4ea2f53cfd8bcae060fb03d9bbde070ec.tar.gz kernel-qcow2-linux-0f0601f4ea2f53cfd8bcae060fb03d9bbde070ec.tar.xz kernel-qcow2-linux-0f0601f4ea2f53cfd8bcae060fb03d9bbde070ec.zip | |
drbd: new configuration parameter c-min-rate
We now track the data rate of locally submitted resync related requests,
and can thus detect non-resync activity on the lower level device.
If the current sync rate is above c-min-rate, and the lower level device
appears to be busy, we throttle the resyncer.
Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>
Diffstat (limited to 'drivers/block/drbd/drbd_main.c')
| -rw-r--r-- | drivers/block/drbd/drbd_main.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c index 1ff8418ae0fa..db93eee7e543 100644 --- a/drivers/block/drbd/drbd_main.c +++ b/drivers/block/drbd/drbd_main.c @@ -1098,6 +1098,8 @@ int __drbd_set_state(struct drbd_conf *mdev, mdev->ov_left = mdev->rs_total - BM_SECT_TO_BIT(mdev->ov_position); mdev->rs_start = now; + mdev->rs_last_events = 0; + mdev->rs_last_sect_ev = 0; mdev->ov_last_oos_size = 0; mdev->ov_last_oos_start = 0; @@ -2706,7 +2708,8 @@ static void drbd_set_defaults(struct drbd_conf *mdev) /* .c_plan_ahead = */ DRBD_C_PLAN_AHEAD_DEF, /* .c_delay_target = */ DRBD_C_DELAY_TARGET_DEF, /* .c_fill_target = */ DRBD_C_FILL_TARGET_DEF, - /* .c_max_rate = */ DRBD_C_MAX_RATE_DEF + /* .c_max_rate = */ DRBD_C_MAX_RATE_DEF, + /* .c_min_rate = */ DRBD_C_MIN_RATE_DEF }; /* Have to use that way, because the layout differs between @@ -2742,6 +2745,7 @@ void drbd_init_set_defaults(struct drbd_conf *mdev) atomic_set(&mdev->packet_seq, 0); atomic_set(&mdev->pp_in_use, 0); atomic_set(&mdev->rs_sect_in, 0); + atomic_set(&mdev->rs_sect_ev, 0); mutex_init(&mdev->md_io_mutex); mutex_init(&mdev->data.mutex); @@ -2819,6 +2823,7 @@ void drbd_mdev_cleanup(struct drbd_conf *mdev) mdev->rs_total = mdev->rs_failed = 0; mdev->rs_last_events = 0; + mdev->rs_last_sect_ev = 0; for (i = 0; i < DRBD_SYNC_MARKS; i++) { mdev->rs_mark_left[i] = 0; mdev->rs_mark_time[i] = 0; |