From: Ilya Dryomov Date: Tue, 27 Mar 2012 14:09:16 +0000 (+0300) Subject: Btrfs: stop silently switching single chunks to raid0 on balance X-Git-Tag: upstream/snapshot3+hdmi~7556^2~50^2~10 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=e3176ca2769e420f64eba4b093bbddea6d7a89c3;p=platform%2Fadaptation%2Frenesas_rcar%2Frenesas_kernel.git Btrfs: stop silently switching single chunks to raid0 on balance This has been causing a lot of confusion for quite a while now and a lot of users were surprised by this (some of them were even stuck in a ENOSPC situation which they couldn't easily get out of). The addition of restriper gives users a clear choice between raid0 and drive concat setup so there's absolutely no excuse for us to keep doing this. Signed-off-by: Ilya Dryomov --- diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c index 1b831ac..4269777 100644 --- a/fs/btrfs/extent-tree.c +++ b/fs/btrfs/extent-tree.c @@ -6941,7 +6941,6 @@ static u64 update_block_group_flags(struct btrfs_root *root, u64 flags) if (flags & (BTRFS_BLOCK_GROUP_RAID1 | BTRFS_BLOCK_GROUP_RAID10)) return stripped | BTRFS_BLOCK_GROUP_DUP; - return flags; } else { /* they already had raid on here, just return */ if (flags & stripped) @@ -6954,9 +6953,9 @@ static u64 update_block_group_flags(struct btrfs_root *root, u64 flags) if (flags & BTRFS_BLOCK_GROUP_DUP) return stripped | BTRFS_BLOCK_GROUP_RAID1; - /* turn single device chunks into raid0 */ - return stripped | BTRFS_BLOCK_GROUP_RAID0; + /* this is drive concat, leave it alone */ } + return flags; }