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| author | Ilya Dryomov <idryomov@gmail.com> | 2012-01-16 22:04:48 +0200 |
|---|---|---|
| committer | Ilya Dryomov <idryomov@gmail.com> | 2012-01-16 22:04:48 +0200 |
| commit | 9555c6c180600b40f6e86bd4dc53bf47e06ed663 (patch) | |
| tree | 74f95edee2368e183a2a054c24725d2940632a8f /fs/btrfs/volumes.c | |
| parent | 596410151ed71819b9e8a8018c6c9992796b256d (diff) | |
| download | talos-obmc-linux-9555c6c180600b40f6e86bd4dc53bf47e06ed663.tar.gz talos-obmc-linux-9555c6c180600b40f6e86bd4dc53bf47e06ed663.zip | |
Btrfs: add skip_balance mount option
Since restriper kthread starts involuntarily on mount and can suck cpu
and memory bandwidth add a mount option to forcefully skip it. The
restriper in that case hangs around in paused state and can be resumed
from userspace when it's convenient.
Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
Diffstat (limited to 'fs/btrfs/volumes.c')
| -rw-r--r-- | fs/btrfs/volumes.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index 17e565388de0..e0160607e6e2 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -2707,15 +2707,19 @@ static int balance_kthread(void *data) struct btrfs_balance_control *bctl = (struct btrfs_balance_control *)data; struct btrfs_fs_info *fs_info = bctl->fs_info; - int ret; + int ret = 0; mutex_lock(&fs_info->volume_mutex); mutex_lock(&fs_info->balance_mutex); set_balance_control(bctl); - printk(KERN_INFO "btrfs: continuing balance\n"); - ret = btrfs_balance(bctl, NULL); + if (btrfs_test_opt(fs_info->tree_root, SKIP_BALANCE)) { + printk(KERN_INFO "btrfs: force skipping balance\n"); + } else { + printk(KERN_INFO "btrfs: continuing balance\n"); + ret = btrfs_balance(bctl, NULL); + } mutex_unlock(&fs_info->balance_mutex); mutex_unlock(&fs_info->volume_mutex); |
