Messages in this thread Patch in this message | | | From | Guangliang Zhao <> | Subject | [PATCH 3/3 v3] dm raid1: add interface to get resync speed | Date | Mon, 7 Jan 2013 18:02:13 +0800 |
| |
Add ioctl to get resync speed, userspace tool is dmsetup status: dmsetup status $device e.g. dmsetup status /dev/dm-2
Signed-off-by: Guangliang Zhao <gzhao@suse.com> --- drivers/md/dm-raid1.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+)
diff --git a/drivers/md/dm-raid1.c b/drivers/md/dm-raid1.c index 3cdad37..62acfa3 100644 --- a/drivers/md/dm-raid1.c +++ b/drivers/md/dm-raid1.c @@ -1427,6 +1427,20 @@ static char device_status_char(struct mirror *m) (test_bit(DM_RAID1_READ_ERROR, &(m->error_type))) ? 'R' : 'U'; } +/* + * get speed from ratelimit_state + */ +static unsigned int rlimit_to_speed(struct mirror_set *ms, + struct ratelimit_state *rl) +{ + sector_t region_size = dm_rh_get_region_size(ms->rh); + unsigned int time, burst; + + time = rl->interval / HZ; + burst = (rl->burst * region_size) >> 1; + + return burst / time; +} static int mirror_status(struct dm_target *ti, status_type_t type, char *result, unsigned int maxlen) @@ -1451,6 +1465,8 @@ static int mirror_status(struct dm_target *ti, status_type_t type, sz += log->type->status(log, type, result+sz, maxlen-sz); + DMEMIT(" %u", rlimit_to_speed(ms, &ms->ms_rlimit)); + break; case STATUSTYPE_TABLE: -- 1.7.10.4
| |