diff options
| author | David Sterba <dsterba@suse.cz> | 2012-02-17 12:26:09 +0100 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2012-03-28 20:30:28 -0400 |
| commit | 65139ed99234d8505948cdb7a835452eb5c191f9 (patch) | |
| tree | 92e2c5e62c55d19bbac1a74e1699321323e65542 | |
| parent | fcd1f065daca593badb7f99d473639cf3b551795 (diff) | |
btrfs: disallow unequal data/metadata blocksize for mixed block groups
With support for bigger metadata blocks, we must avoid mounting a
filesystem with different block size for mixed block groups, this causes
corruption (found by xfstests/083).
Signed-off-by: David Sterba <dsterba@suse.cz>
| -rw-r--r-- | fs/btrfs/disk-io.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 38c2ee1ca0d5..fe087847c8e7 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2302,6 +2302,14 @@ int open_ctree(struct super_block *sb, goto fail_sb_buffer; } + if ((features & BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS) && + (leafsize != nodesize || sectorsize != nodesize)) { + printk(KERN_WARNING "btrfs: unequal leaf/node/sector sizes " + "are not allowed for mixed block groups on %s\n", + sb->s_id); + goto fail_sb_buffer; + } + mutex_lock(&fs_info->chunk_mutex); ret = btrfs_read_sys_array(tree_root); mutex_unlock(&fs_info->chunk_mutex); |