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| author | Stefan Behrens <sbehrens@giantdisaster.de> | 2012-08-10 08:58:21 -0600 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2012-08-28 16:53:43 -0400 |
| commit | 256dd1bb3750ac5ad49b40887c1691788dc44b33 (patch) | |
| tree | d260aa607397dd2e67681b4b264585be3032e9d9 /fs | |
| parent | d280e5be940931c84bb2e9831ead9d02bc785484 (diff) | |
| download | linux-256dd1bb3750ac5ad49b40887c1691788dc44b33.tar.gz linux-256dd1bb3750ac5ad49b40887c1691788dc44b33.tar.bz2 linux-256dd1bb3750ac5ad49b40887c1691788dc44b33.zip | |
Btrfs: fix that repair code is spuriously executed for transid failures
If verify_parent_transid() fails for all mirrors, the current code
calls repair_io_failure() anyway which means:
- that the disk block is rewritten without repairing anything and
- that a kernel log message is printed which misleadingly claims
that a read error was corrected.
This is an example:
parent transid verify failed on 615015833600 wanted 110423 found 110424
parent transid verify failed on 615015833600 wanted 110423 found 110424
btrfs read error corrected: ino 1 off 615015833600 (dev /dev/...)
It is wrong to ignore the results from verify_parent_transid() and to
call repair_eb_io_failure() when the verification of the transids failed.
This commit fixes the issue.
Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/btrfs/disk-io.c | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c index 3c4c4397f470..29c69e60d3b0 100644 --- a/fs/btrfs/disk-io.c +++ b/fs/btrfs/disk-io.c @@ -377,9 +377,13 @@ static int btree_read_extent_buffer_pages(struct btrfs_root *root, ret = read_extent_buffer_pages(io_tree, eb, start, WAIT_COMPLETE, btree_get_extent, mirror_num); - if (!ret && !verify_parent_transid(io_tree, eb, + if (!ret) { + if (!verify_parent_transid(io_tree, eb, parent_transid, 0)) - break; + break; + else + ret = -EIO; + } /* * This buffer's crc is fine, but its contents are corrupted, so |