[RFC 00/12] Add more tests for multi fs block atomic writes

[Ojaswin Mujoo <ojaswin@linux.ibm.com>]

These are the tests we were using to verify that filesystems are not
tearing multi fs block atomic writes. Infact some of the tests like
generic/772 actually helped us catch and fix issues in ext4's early
implementations of multi fs block atomic writes and hence we feel these
tests are useful to have in xfstests.

We have tested these with scsi debug as well as a real nvme device
supporting multi fs block atomic writes.

Thoughts and suggestions are welcome!

(This is rebased over Darrick's atomic write tests:
https://lore.kernel.org/fstests/20250605040122.63131-1-catherine.hoang@oracle.com/T/#t)

Ojaswin Mujoo (7):
  common/rc: Add a helper to run fsx on a given file
  ltp/fsx.c: Add atomic writes support to fsx
  generic/770: Add atomic write multi-fsblock O_[D]SYNC tests
  generic/771: Stress fsx with atomic writes enabled
  generic/772: Add sudden shutdown tests for multi block atomic writes
  ext4/063: Atomic write test for extent split across leaf nodes
  ext4/064: Add atomic write tests for journal credit calculation

Ritesh Harjani (IBM) (5):
  common/preamble: Fix fsx for ext4 with bigalloc
  generic/767: Add atomic write test using fio crc check verifier
  generic/769: Add atomic write test using fio verify on file mixed
    mappings
  ext4/061: Atomic writes stress test for bigalloc using fio crc
    verifier
  ext4/062: Atomic writes test for bigalloc using fio crc verifier on
    multiple files

 common/preamble       |  16 ++
 common/rc             |  21 ++-
 ltp/fsx.c             | 105 +++++++++++-
 tests/ext4/061        | 107 +++++++++++++
 tests/ext4/061.out    |   2 +
 tests/ext4/062        | 131 +++++++++++++++
 tests/ext4/062.out    |   2 +
 tests/ext4/063        | 125 +++++++++++++++
 tests/ext4/063.out    |   2 +
 tests/ext4/064        |  75 +++++++++
 tests/ext4/064.out    |   2 +
 tests/generic/767     |  84 ++++++++++
 tests/generic/767.out |   2 +
 tests/generic/769     | 101 ++++++++++++
 tests/generic/769.out |   2 +
 tests/generic/770     | 161 +++++++++++++++++++
 tests/generic/770.out |   2 +
 tests/generic/771     |  49 ++++++
 tests/generic/771.out |   2 +
 tests/generic/772     | 360 ++++++++++++++++++++++++++++++++++++++++++
 tests/generic/772.out |   2 +
 21 files changed, 1345 insertions(+), 8 deletions(-)
 create mode 100755 tests/ext4/061
 create mode 100644 tests/ext4/061.out
 create mode 100755 tests/ext4/062
 create mode 100644 tests/ext4/062.out
 create mode 100755 tests/ext4/063
 create mode 100644 tests/ext4/063.out
 create mode 100755 tests/ext4/064
 create mode 100644 tests/ext4/064.out
 create mode 100755 tests/generic/767
 create mode 100644 tests/generic/767.out
 create mode 100755 tests/generic/769
 create mode 100644 tests/generic/769.out
 create mode 100755 tests/generic/770
 create mode 100644 tests/generic/770.out
 create mode 100755 tests/generic/771
 create mode 100644 tests/generic/771.out
 create mode 100755 tests/generic/772
 create mode 100644 tests/generic/772.out

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2.49.0