[PATCH 0/2] btrfs-progs: handle raid56 properly

[Qu Wenruo <wqu@suse.com>]

There is a bug that "btrfs check" can fail to even open the filesystem.

The root cause is that raid56 read path doesn't even allow any missing
device, which is pretty ironic.

This patchset will fix the raid56 read path, and slightly improve the
raid56 handling (still not reaching the granularity of kernel yet).

And finally add a test case for it.

Qu Wenruo (2):
  btrfs-progs: properly handle degraded raid56 reads
  btrfs-progs: fsck-tests: add test case for degraded raid5

 kernel-lib/bitmap.h                         | 45 +++++++++++++++++
 kernel-shared/extent_io.c                   | 54 ++++++++++++---------
 tests/fsck-tests/060-degraded-check/test.sh | 36 ++++++++++++++
 3 files changed, 113 insertions(+), 22 deletions(-)
 create mode 100644 kernel-lib/bitmap.h
 create mode 100755 tests/fsck-tests/060-degraded-check/test.sh

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2.38.1