diff options
| author | NeilBrown <neilb@cse.unsw.edu.au> | 2005-09-09 16:23:45 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-09-09 16:39:10 -0700 |
| commit | 36fa30636fb84b209210299684e1be66d9e58217 (patch) | |
| tree | 28a7473238932f1e7ade1a5a5ec67a113b6d6205 /drivers/md/raid1.c | |
| parent | 6a07997fc34ac15a1c5dc650285d79b7604a2276 (diff) | |
| download | lwn-36fa30636fb84b209210299684e1be66d9e58217.tar.gz lwn-36fa30636fb84b209210299684e1be66d9e58217.zip | |
[PATCH] md: all hot-add and hot-remove of md intent logging bitmaps
Both file-bitmaps and superblock bitmaps are supported.
If you add a bitmap file on the array device, you lose.
This introduces a 'default_bitmap_offset' field in mddev, as the ioctl used
for adding a superblock bitmap doesn't have room for giving an offset. Later,
this value will be setable via sysfs.
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/md/raid1.c')
| -rw-r--r-- | drivers/md/raid1.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/drivers/md/raid1.c b/drivers/md/raid1.c index ace41c571aeb..ba643e4bfac9 100644 --- a/drivers/md/raid1.c +++ b/drivers/md/raid1.c @@ -1565,6 +1565,35 @@ static int raid1_reshape(mddev_t *mddev, int raid_disks) return 0; } +void raid1_quiesce(mddev_t *mddev, int state) +{ + conf_t *conf = mddev_to_conf(mddev); + + switch(state) { + case 0: + spin_lock_irq(&conf->resync_lock); + conf->barrier++; + wait_event_lock_irq(conf->wait_idle, !conf->nr_pending, + conf->resync_lock, raid1_unplug(mddev->queue)); + spin_unlock_irq(&conf->resync_lock); + break; + case 1: + spin_lock_irq(&conf->resync_lock); + conf->barrier--; + spin_unlock_irq(&conf->resync_lock); + wake_up(&conf->wait_resume); + wake_up(&conf->wait_idle); + break; + } + if (mddev->thread) { + if (mddev->bitmap) + mddev->thread->timeout = mddev->bitmap->daemon_sleep * HZ; + else + mddev->thread->timeout = MAX_SCHEDULE_TIMEOUT; + md_wakeup_thread(mddev->thread); + } +} + static mdk_personality_t raid1_personality = { @@ -1581,6 +1610,7 @@ static mdk_personality_t raid1_personality = .sync_request = sync_request, .resize = raid1_resize, .reshape = raid1_reshape, + .quiesce = raid1_quiesce, }; static int __init raid_init(void) |