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btrfs: disable balance for extent tree v2 for now

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With global root id's it makes it problematic to do backref lookups for
balance.  This isn't hard to deal with, but future changes are going to
make it impossible to lookup backrefs on any COWonly roots, so go ahead
and disable balance for now on extent tree v2 until we can add balance
support back in future patches.

Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Josef Bacik 2021-12-15 15:39:59 -05:00 committed by David Sterba
parent 2c7d2a2302
commit 4b34925399
1 changed files with 6 additions and 0 deletions
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6
fs/btrfs/volumes.c
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@ -3235,6 +3235,12 @@ int btrfs_relocate_chunk(struct btrfs_fs_info *fs_info, u64 chunk_offset)
u64 length;
int ret;
if (btrfs_fs_incompat(fs_info, EXTENT_TREE_V2)) {
btrfs_err(fs_info,
"relocate: not supported on extent tree v2 yet");
return -EINVAL;
}
/*
* Prevent races with automatic removal of unused block groups.
* After we relocate and before we remove the chunk with offset