[PATCH 0/2] btrfs-progs: add check and repair ability for super num devices mismatch

[Qu Wenruo <wqu@suse.com>]

The patchset can be fetched from github:
https://github.com/adam900710/btrfs-progs/tree/super_num_devs

The 2nd patch contains a compressed raw image, thus it may be a little
too large for the mail list.

This patchset will allow btrfs check to detect and repair super num devices
mismatch.

The detect part is to iterate through chunk tree to grab the correct
number of devices.
This is more reliable than counting devices in fs_devices, since seed
device is in another fs_devices.

The repair is more straightforward, just reset the value in superblock
and commit a transaction.

Qu Wenruo (2):
  btrfs-progs: check: add check and repair ability for super num devs
    mismatch
  btrfs-progs: tests/fsck: add test case for super num devs mismatch

 check/main.c                                  |   1 +
 check/mode-common.c                           |  88 ++++++++++++++++++
 check/mode-common.h                           |   2 +
 .../default.raw.xz                            | Bin 0 -> 22028 bytes
 4 files changed, 91 insertions(+)
 create mode 100644 tests/fsck-tests/054-super-num-devs-mismatch/default.raw.xz

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2.35.1