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| author | Qu Wenruo <wqu@suse.com> | 2024-06-14 13:52:31 +0930 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2024-07-11 15:33:30 +0200 |
| commit | 32e6216512b4119c1bb317c7305708f725832ff7 (patch) | |
| tree | be8a3f42519a2f51a1f7411e9b1b9ee0b2caec8a /fs/btrfs/disk-io.c | |
| parent | btrfs: introduce new "rescue=ignoremetacsums" mount option (diff) | |
| download | linux-32e6216512b4119c1bb317c7305708f725832ff7.tar.gz linux-32e6216512b4119c1bb317c7305708f725832ff7.zip | |
btrfs: introduce new "rescue=ignoresuperflags" mount option
This new mount option allows the kernel to skip the super flags check,
it's mostly to allow the kernel to do a rescue mount of an interrupted
checksum conversion.
Reviewed-by: Josef Bacik <josef@toxicpanda.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'fs/btrfs/disk-io.c')
| -rw-r--r-- | fs/btrfs/disk-io.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 2cfb7ab24aa9..382a27ce3aac 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -2345,15 +2345,23 @@ int btrfs_validate_super(const struct btrfs_fs_info *fs_info, u64 nodesize = btrfs_super_nodesize(sb); u64 sectorsize = btrfs_super_sectorsize(sb); int ret = 0; + const bool ignore_flags = btrfs_test_opt(fs_info, IGNORESUPERFLAGS); if (btrfs_super_magic(sb) != BTRFS_MAGIC) { btrfs_err(fs_info, "no valid FS found"); ret = -EINVAL; } - if (btrfs_super_flags(sb) & ~BTRFS_SUPER_FLAG_SUPP) { - btrfs_err(fs_info, "unrecognized or unsupported super flag: 0x%llx", - btrfs_super_flags(sb) & ~BTRFS_SUPER_FLAG_SUPP); - ret = -EINVAL; + if ((btrfs_super_flags(sb) & ~BTRFS_SUPER_FLAG_SUPP)) { + if (!ignore_flags) { + btrfs_err(fs_info, + "unrecognized or unsupported super flag 0x%llx", + btrfs_super_flags(sb) & ~BTRFS_SUPER_FLAG_SUPP); + ret = -EINVAL; + } else { + btrfs_info(fs_info, + "unrecognized or unsupported super flags: 0x%llx, ignored", + btrfs_super_flags(sb) & ~BTRFS_SUPER_FLAG_SUPP); + } } if (btrfs_super_root_level(sb) >= BTRFS_MAX_LEVEL) { btrfs_err(fs_info, "tree_root level too big: %d >= %d", |