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Send RESYNCING while performing resync start/stop

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When a resync is initiated, RESYNCING message is sent to all active
nodes with the range (lo,hi). When the resync is over, a RESYNCING
message is sent with (0,0). A high sector value of zero indicates
that the resync is over.

Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
This commit is contained in:
Goldwyn Rodrigues 2014-06-07 02:16:58 -05:00
parent 1d7e3e9611
commit 965400eb61
3 changed files with 36 additions and 2 deletions
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32
drivers/md/md-cluster.c
View file

@ -647,11 +647,43 @@ static int metadata_update_cancel(struct mddev *mddev)
return dlm_unlock_sync(cinfo->token_lockres);
}
static int resync_send(struct mddev *mddev, enum msg_type type,
sector_t lo, sector_t hi)
{
struct md_cluster_info *cinfo = mddev->cluster_info;
struct cluster_msg cmsg;
int slot = cinfo->slot_number - 1;
pr_info("%s:%d lo: %llu hi: %llu\n", __func__, __LINE__,
(unsigned long long)lo,
(unsigned long long)hi);
resync_info_update(mddev, lo, hi);
cmsg.type = cpu_to_le32(type);
cmsg.slot = cpu_to_le32(slot);
cmsg.low = cpu_to_le64(lo);
cmsg.high = cpu_to_le64(hi);
return sendmsg(cinfo, &cmsg);
}
static int resync_start(struct mddev *mddev, sector_t lo, sector_t hi)
{
pr_info("%s:%d\n", __func__, __LINE__);
return resync_send(mddev, RESYNCING, lo, hi);
}
static void resync_finish(struct mddev *mddev)
{
pr_info("%s:%d\n", __func__, __LINE__);
resync_send(mddev, RESYNCING, 0, 0);
}
static struct md_cluster_operations cluster_ops = {
.join = join,
.leave = leave,
.slot_number = slot_number,
.resync_info_update = resync_info_update,
.resync_start = resync_start,
.resync_finish = resync_finish,
.metadata_update_start = metadata_update_start,
.metadata_update_finish = metadata_update_finish,
.metadata_update_cancel = metadata_update_cancel,

2
drivers/md/md-cluster.h
View file

@ -12,6 +12,8 @@ struct md_cluster_operations {
int (*leave)(struct mddev *mddev);
int (*slot_number)(struct mddev *mddev);
void (*resync_info_update)(struct mddev *mddev, sector_t lo, sector_t hi);
int (*resync_start)(struct mddev *mddev, sector_t lo, sector_t hi);
void (*resync_finish)(struct mddev *mddev);
int (*metadata_update_start)(struct mddev *mddev);
int (*metadata_update_finish)(struct mddev *mddev);
int (*metadata_update_cancel)(struct mddev *mddev);

4
drivers/md/md.c
View file

@ -7692,7 +7692,7 @@ void md_do_sync(struct md_thread *thread)
update_time = jiffies;
if (mddev_is_clustered(mddev))
md_cluster_ops->resync_info_update(mddev, j, max_sectors);
md_cluster_ops->resync_start(mddev, j, max_sectors);
blk_start_plug(&plug);
while (j < max_sectors) {
@ -7817,7 +7817,7 @@ void md_do_sync(struct md_thread *thread)
mddev->pers->sync_request(mddev, max_sectors, &skipped, 1);
if (mddev_is_clustered(mddev))
md_cluster_ops->resync_info_update(mddev, 0, 0);
md_cluster_ops->resync_finish(mddev);
if (!test_bit(MD_RECOVERY_CHECK, &mddev->recovery) &&
mddev->curr_resync > 2) {