forked from Minki/linux
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 <idryomov@gmail.com>
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@ -6941,7 +6941,6 @@ static u64 update_block_group_flags(struct btrfs_root *root, u64 flags)
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if (flags & (BTRFS_BLOCK_GROUP_RAID1 |
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BTRFS_BLOCK_GROUP_RAID10))
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return stripped | BTRFS_BLOCK_GROUP_DUP;
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return flags;
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} else {
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/* they already had raid on here, just return */
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if (flags & stripped)
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@ -6954,9 +6953,9 @@ static u64 update_block_group_flags(struct btrfs_root *root, u64 flags)
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if (flags & BTRFS_BLOCK_GROUP_DUP)
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return stripped | BTRFS_BLOCK_GROUP_RAID1;
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/* turn single device chunks into raid0 */
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return stripped | BTRFS_BLOCK_GROUP_RAID0;
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/* this is drive concat, leave it alone */
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}
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return flags;
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}
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