diff options
| author | Josef Bacik <josef@toxicpanda.com> | 2020-10-16 18:29:18 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2020-12-08 17:53:41 +0300 |
| commit | 42437a6386ffeaaf200731e73d723ea491f3fe7d (patch) | |
| tree | d8c5d6ebb854ecdb34e61fe7d9f458656e1713f1 /fs/btrfs/compression.c | |
| parent | 68319c18cb21ab472ce2c4ed572257a42455ac01 (diff) | |
| download | linux-42437a6386ffeaaf200731e73d723ea491f3fe7d.tar.xz | |
btrfs: introduce mount option rescue=ignorebadroots
In the face of extent root corruption, or any other core fs wide root
corruption we will fail to mount the file system. This makes recovery
kind of a pain, because you need to fall back to userspace tools to
scrape off data. Instead provide a mechanism to gracefully handle bad
roots, so we can at least mount read-only and possibly recover data from
the file system.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/compression.c')
| -rw-r--r-- | fs/btrfs/compression.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/compression.c b/fs/btrfs/compression.c index 7e1eb57b923c..972fb68a85ac 100644 --- a/fs/btrfs/compression.c +++ b/fs/btrfs/compression.c @@ -150,7 +150,7 @@ static int check_compressed_csum(struct btrfs_inode *inode, struct bio *bio, struct compressed_bio *cb = bio->bi_private; u8 *cb_sum = cb->sums; - if (inode->flags & BTRFS_INODE_NODATASUM) + if (!fs_info->csum_root || (inode->flags & BTRFS_INODE_NODATASUM)) return 0; shash->tfm = fs_info->csum_shash; |