Re: [PATCH 0/4] btrfs-progs: check: Add repair support for mismatch dir item hash

[Qu Wenruo <quwenruo.btrfs@gmx.com>]

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Hi David,

Would you please consider merging this patchset?

There are at least 2 user reporting latest kernel tree checker refuse to
mount their fs, and this patch is needed to allow btrfs-progs to fix the fs.

Thanks,
Qu

On 2018/10/25 下午3:44, Qu Wenruo wrote:
> This patchset can be fetched from github:
> https://github.com/adam900710/btrfs-progs/tree/repair_bad_dir_item_hash
> 
> This is still based on the latest stable v4.17.1 branch (which is already a
> little old now)
> 
> We have report from suse bugzilla where user report latest kernel refuse
> to mount the fs.
> 
> The problem turns out to be that some old kernel (around Jan 2017) has a
> bug that could leads to corrupted dir item with mismatch hash.
> 
> This patchset will allow btrfs check --repair to repair such problem.
> 
> Qu Wenruo (4):
>   btrfs-progs: lowmem check: Add ability to repair dir item with
>     mismatch hash
>   btrfs-progs: original check: Use mismatch_dir_hash_record to record
>     bad dir items
>   btrfs-progs: original check: Add ability to repair dir item with
>     invalid hash
>   btrfs-progs: fsck-tests: Make 026-bad-dir-item-name test case to
>     verify if btrfs-check can also repair it
> 
>  check/main.c                                  | 121 +++++++++++++++++-
>  check/mode-common.c                           |  51 ++++++++
>  check/mode-common.h                           |   5 +-
>  check/mode-lowmem.c                           |  46 ++++++-
>  check/mode-lowmem.h                           |   1 +
>  check/mode-original.h                         |  14 ++
>  ctree.h                                       |   3 +
>  dir-item.c                                    |   6 +-
>  .../026-bad-dir-item-name/description.txt     |  41 ++++++
>  .../fsck-tests/026-bad-dir-item-name/test.sh  |  13 --
>  10 files changed, 272 insertions(+), 29 deletions(-)
>  create mode 100644 tests/fsck-tests/026-bad-dir-item-name/description.txt
>  delete mode 100755 tests/fsck-tests/026-bad-dir-item-name/test.sh
> 


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