[PATCH blktests v5 0/3] bcache: add initial test cases

I've addressed all comments from Shinichiro. 

bcache/002 is not using iostat anymore, instead it reads directly from sysfs.
Also updated this tests according Stephen's feedback. I didn't test yet with an
older version.

Unfortunatly, I was not able to reproduce the "nvme?n1" file in my setup with:

  TEST_CASE_DEV_ARRAY[bcache/*]="/dev/nvme0n1 /dev/vdb /dev/vdc"
  TEST_CASE_DEV_ARRAY[bcache/*]="/dev/nvme0n1 /dev/vdb /dev/vdc /dev/nvme1n1"

Not sure where this is coming from.

Cheers,
Daniel
 
Cc: Christoph Hellwig <[email protected]>
Cc: Stephen Zhang <[email protected]>
Cc: Kent Overstreet <[email protected]>
Cc: Coly Li <[email protected]>
Cc: Shin'ichiro Kawasaki <[email protected]>
Cc: Johannes Thumshirn <[email protected]>
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Daniel Wagner <[email protected]>

--- Changes in v5:
- Addressed all comments from Shinichiro
- Updated bcache/002 according Stepen's feedback, though reduced
  fio's runtime to 10s
- Link to v4: https://patch.msgid.link/[email protected]

Changes in v4:
- changed file mode to 755 for 001 and 002
- changed license to GPL-3.0+
- use group_requires
- fixed whitespace damage
- dropped unnecessary '|| true'
- added 'local' for local variables
- added wait loop for register interface to show up
- updated documentation
- Link to v3: https://patch.msgid.link/[email protected]

Changes in v3:
- add bcache/002
- return created bcache devices to tests case
- made cleanup more robust (handling detached cache)
- track all resources correctly
- operatoe only in final cleanup on known devices
- Link to v2: https://patch.msgid.link/[email protected]

Changes in v2:
- fixed whitespace damage
- added documentation on how to configure for bcache tests
- do registering explicitly
- made disk wiping more robust
- Link to v1: https://patch.msgid.link/[email protected]

---
Daniel Wagner (3):
      bcache: add bcache/001
      bcache: add bcache/002
      doc: document how to configure bcache tests

 Documentation/running-tests.md |  10 ++
 tests/bcache/001               |  44 +++++
 tests/bcache/001.out           |   3 +
 tests/bcache/002               |  78 +++++++++
 tests/bcache/002.out           |   2 +
 tests/bcache/rc                | 377 +++++++++++++++++++++++++++++++++++++++++
 6 files changed, 514 insertions(+)
---
base-commit: e387a7e0169cc012eb6a7140a0561d2901c92a76
change-id: 20260120-bcache-35ec7368c8f4

Best regards,
-- 
Daniel Wagner <[email protected]>