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| author | Goldwyn Rodrigues <rgoldwyn@suse.com> | 2014-06-07 10:44:51 +0400 |
|---|---|---|
| committer | Goldwyn Rodrigues <rgoldwyn@suse.com> | 2015-02-23 18:59:06 +0300 |
| commit | 293467aa1f161cd50920ccf7fc1efa3946a4d50c (patch) | |
| tree | 661c54b1c0e45b1f8bdd56c86a9564887c9ec069 /drivers/md/md-cluster.c | |
| parent | 601b515c5dcc00fa71148cd9d2405ea1f70bc9cd (diff) | |
| download | linux-293467aa1f161cd50920ccf7fc1efa3946a4d50c.tar.xz | |
metadata_update sends message to other nodes
- request to send a message
- make changes to superblock
- send messages telling everyone that the superblock has changed
- other nodes all read the superblock
- other nodes all ack the messages
- updating node release the "I'm sending a message" resource.
Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.com>
Diffstat (limited to 'drivers/md/md-cluster.c')
| -rw-r--r-- | drivers/md/md-cluster.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/drivers/md/md-cluster.c b/drivers/md/md-cluster.c index 9a4abe1b4aa4..5db491010835 100644 --- a/drivers/md/md-cluster.c +++ b/drivers/md/md-cluster.c @@ -621,11 +621,39 @@ static void resync_info_update(struct mddev *mddev, sector_t lo, sector_t hi) dlm_lock_sync(cinfo->bitmap_lockres, DLM_LOCK_PW); } +static int metadata_update_start(struct mddev *mddev) +{ + return lock_comm(mddev->cluster_info); +} + +static int metadata_update_finish(struct mddev *mddev) +{ + struct md_cluster_info *cinfo = mddev->cluster_info; + struct cluster_msg cmsg; + int ret; + + memset(&cmsg, 0, sizeof(cmsg)); + cmsg.type = cpu_to_le32(METADATA_UPDATED); + ret = __sendmsg(cinfo, &cmsg); + unlock_comm(cinfo); + return ret; +} + +static int metadata_update_cancel(struct mddev *mddev) +{ + struct md_cluster_info *cinfo = mddev->cluster_info; + + return dlm_unlock_sync(cinfo->token_lockres); +} + static struct md_cluster_operations cluster_ops = { .join = join, .leave = leave, .slot_number = slot_number, .resync_info_update = resync_info_update, + .metadata_update_start = metadata_update_start, + .metadata_update_finish = metadata_update_finish, + .metadata_update_cancel = metadata_update_cancel, }; static int __init cluster_init(void) |