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| author | Andreas Philipp <philipp.andreas@gmail.com> | 2013-05-11 11:13:03 +0000 |
|---|---|---|
| committer | Josef Bacik <jbacik@fusionio.com> | 2013-05-17 21:40:20 -0400 |
| commit | 8250dabedb633e162bce89f2aacf5e65fa9e6464 (patch) | |
| tree | 28854bca8fabdb3d7f24c0d982a6aaee09d7223d /fs | |
| parent | 379cde741b220091d2124fb500b178b90ad7f460 (diff) | |
| download | talos-op-linux-8250dabedb633e162bce89f2aacf5e65fa9e6464.tar.gz talos-op-linux-8250dabedb633e162bce89f2aacf5e65fa9e6464.zip | |
Correct allowed raid levels on balance.
Raid5 with 3 devices is well defined while the old logic allowed
raid5 only with a minimum of 4 devices when converting the block group
profile via btrfs balance. Creating a raid5 with just three devices
using mkfs.btrfs worked always as expected. This is now fixed and the
whole logic is rewritten.
Signed-off-by: Andreas Philipp <philipp.andreas@gmail.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/volumes.c | 13 |
1 files changed, 6 insertions, 7 deletions
diff --git a/fs/btrfs/volumes.c b/fs/btrfs/volumes.c index a191bac31d85..062e93069c5e 100644 --- a/fs/btrfs/volumes.c +++ b/fs/btrfs/volumes.c @@ -3120,14 +3120,13 @@ int btrfs_balance(struct btrfs_balance_control *bctl, allowed = BTRFS_AVAIL_ALLOC_BIT_SINGLE; if (num_devices == 1) allowed |= BTRFS_BLOCK_GROUP_DUP; - else if (num_devices < 4) + else if (num_devices > 1) allowed |= (BTRFS_BLOCK_GROUP_RAID0 | BTRFS_BLOCK_GROUP_RAID1); - else - allowed |= (BTRFS_BLOCK_GROUP_RAID0 | BTRFS_BLOCK_GROUP_RAID1 | - BTRFS_BLOCK_GROUP_RAID10 | - BTRFS_BLOCK_GROUP_RAID5 | - BTRFS_BLOCK_GROUP_RAID6); - + if (num_devices > 2) + allowed |= BTRFS_BLOCK_GROUP_RAID5; + if (num_devices > 3) + allowed |= (BTRFS_BLOCK_GROUP_RAID10 | + BTRFS_BLOCK_GROUP_RAID6); if ((bctl->data.flags & BTRFS_BALANCE_ARGS_CONVERT) && (!alloc_profile_is_valid(bctl->data.target, 1) || (bctl->data.target & ~allowed))) { |
