[PATCH v7 00/10] iotests: use python logging

[John Snow]

This series uses python logging to enable output conditionally on
iotests.log(). We unify an initialization call (which also enables
debugging output for those tests with -d) and then make the switch
inside of iotests.

It will help alleviate the need to create logged/unlogged versions
of all the various helpers we have made.

Also, I got lost and accidentally delinted iotests while I was here.
Sorry about that.

V7:

[----] : patches are identical
[####] : number of functional differences between upstream/downstream patch
[down] : patch is downstream-only
The flags [FC] indicate (F)unctional and (C)ontextual differences, respectively

001/10:[0025] [FC] 'iotests: do a light delinting'
002/10:[----] [--] 'iotests: don't use 'format' for drive_add'
003/10:[----] [-C] 'iotests: ignore import warnings from pylint'
004/10:[0008] [FC] 'iotests: replace mutable list default args'
005/10:[0006] [FC] 'iotests: add pylintrc file'
006/10:[down] 'iotests: limit line length to 79 chars'
007/10:[0008] [FC] 'iotests: add script_initialize'
008/10:[----] [--] 'iotest 258: use script_main'
009/10:[----] [--] 'iotests: Mark verify functions as private'
010/10:[0006] [FC] 'iotests: use python logging for iotests.log()'

- All delinting patches are now entirely front-loaded.
- Redid delinting to avoid "correcting" no-else-return statements.
- Moved more mutable list corrections into patch 4, to make it standalone.
- Moved pylintrc up to patch 5. Disabled no-else-return.
- Added patch 6 to require line length checks.
  (Some python 3.4 compatibility code is removed as a consequence.)
- Patch 7 changes slightly as a result of patch 4 changes.
- Added some logging explainer into patch 10.
  (Patch changes slightly because of patch 6.)

V6:
 - It's been so long since V5, let's just look at it anew.
 - Dropped patch 1, rebased, added more delinting.
 - I'm not touching the supported_platforms thing.
   Not interested in rehashing that debate.

V5:
 - Rebased again
 - Allow Python tests to run on any platform

V4:
 - Rebased on top of kwolf/block at the behest of mreitz

V3:
 - Rebased for 4.1+; now based on main branch.

V2:
 - Added all of the other python tests I missed to use script_initialize
 - Refactored the common setup as per Ehabkost's suggestion
 - Added protocol arguments to common initialization,
   but this isn't strictly required.

John Snow (10):
  iotests: do a light delinting
  iotests: don't use 'format' for drive_add
  iotests: ignore import warnings from pylint
  iotests: replace mutable list default args
  iotests: add pylintrc file
  iotests: limit line length to 79 chars
  iotests: add script_initialize
  iotest 258: use script_main
  iotests: Mark verify functions as private
  iotests: use python logging for iotests.log()

 tests/qemu-iotests/030        |   4 +-
 tests/qemu-iotests/055        |   3 +-
 tests/qemu-iotests/149        |   3 +-
 tests/qemu-iotests/194        |   4 +-
 tests/qemu-iotests/202        |   4 +-
 tests/qemu-iotests/203        |   4 +-
 tests/qemu-iotests/206        |   2 +-
 tests/qemu-iotests/207        |   6 +-
 tests/qemu-iotests/208        |   2 +-
 tests/qemu-iotests/209        |   2 +-
 tests/qemu-iotests/210        |   6 +-
 tests/qemu-iotests/211        |   6 +-
 tests/qemu-iotests/212        |   6 +-
 tests/qemu-iotests/213        |   6 +-
 tests/qemu-iotests/216        |   4 +-
 tests/qemu-iotests/218        |   2 +-
 tests/qemu-iotests/219        |   2 +-
 tests/qemu-iotests/222        |   7 +-
 tests/qemu-iotests/224        |   4 +-
 tests/qemu-iotests/228        |   6 +-
 tests/qemu-iotests/234        |   4 +-
 tests/qemu-iotests/235        |   4 +-
 tests/qemu-iotests/236        |   2 +-
 tests/qemu-iotests/237        |   2 +-
 tests/qemu-iotests/238        |   2 +
 tests/qemu-iotests/242        |   2 +-
 tests/qemu-iotests/245        |   1 +
 tests/qemu-iotests/245.out    |  24 +--
 tests/qemu-iotests/246        |   2 +-
 tests/qemu-iotests/248        |   2 +-
 tests/qemu-iotests/254        |   2 +-
 tests/qemu-iotests/255        |   2 +-
 tests/qemu-iotests/256        |   2 +-
 tests/qemu-iotests/258        |  10 +-
 tests/qemu-iotests/260        |   4 +-
 tests/qemu-iotests/262        |   4 +-
 tests/qemu-iotests/264        |   4 +-
 tests/qemu-iotests/277        |   2 +
 tests/qemu-iotests/280        |   8 +-
 tests/qemu-iotests/283        |   4 +-
 tests/qemu-iotests/iotests.py | 300 ++++++++++++++++++++--------------
 tests/qemu-iotests/pylintrc   |  26 +++
 42 files changed, 300 insertions(+), 196 deletions(-)
 create mode 100644 tests/qemu-iotests/pylintrc

-- 
2.21.1