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| author | Guoqing Jiang <gqjiang@suse.com> | 2017-10-24 15:11:51 +0800 |
|---|---|---|
| committer | Shaohua Li <shli@fb.com> | 2017-11-01 21:32:23 -0700 |
| commit | cb8a7a7e1098e74d36378b992a6d012668ec10d9 (patch) | |
| tree | 54461d8655ba8219f2c1bce3669a8503cd2e5c06 /drivers | |
| parent | d4098c7262a47f529765d89614484a957363d623 (diff) | |
| download | linux-cb8a7a7e1098e74d36378b992a6d012668ec10d9.tar.gz linux-cb8a7a7e1098e74d36378b992a6d012668ec10d9.tar.bz2 linux-cb8a7a7e1098e74d36378b992a6d012668ec10d9.zip | |
md-cluster: Suspend writes in RAID10 if within range
If there is a resync going on, all nodes must suspend
writes to the range. This is recorded in suspend_info
and suspend_list.
If there is an I/O within the ranges of any of the
suspend_info, area_resyncing will return 1.
Signed-off-by: Guoqing Jiang <gqjiang@suse.com>
Signed-off-by: Shaohua Li <shli@fb.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/md/raid10.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/drivers/md/raid10.c b/drivers/md/raid10.c index 61890231972e..cc6a56a659a3 100644 --- a/drivers/md/raid10.c +++ b/drivers/md/raid10.c @@ -1294,6 +1294,22 @@ static void raid10_write_request(struct mddev *mddev, struct bio *bio, sector_t sectors; int max_sectors; + if ((mddev_is_clustered(mddev) && + md_cluster_ops->area_resyncing(mddev, WRITE, + bio->bi_iter.bi_sector, + bio_end_sector(bio)))) { + DEFINE_WAIT(w); + for (;;) { + prepare_to_wait(&conf->wait_barrier, + &w, TASK_IDLE); + if (!md_cluster_ops->area_resyncing(mddev, WRITE, + bio->bi_iter.bi_sector, bio_end_sector(bio))) + break; + schedule(); + } + finish_wait(&conf->wait_barrier, &w); + } + /* * Register the new request and wait if the reconstruction * thread has put up a bar for new requests. |