mbox series

[blktests,0/9] support built-in scsi_debug

Message ID 20230417124728.458630-1-shinichiro@fastmail.com (mailing list archive)
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Series support built-in scsi_debug | expand

Message

Shin'ichiro Kawasaki April 17, 2023, 12:47 p.m. UTC 
From: Shin'ichiro Kawasaki <shinichiro.kawasaki@wdc.com>

In the past, there was an issue related to scsi_debug module unload [1]. At that
time, it was suggested to modify blktests not to rely on module load and unload.
Based on that discussion, blktests was modified not to load or unload null_blk
driver [2][3]. As of today, a number of test cases with null_blk can be run with
built-in null_blk.

This series introduces similar support for built-in scsi_debug. This patch adds
a new helper function _configure_scsi_debug which can set up scsi_debug device
without module load and unload. Also it enables 5 test cases to run with built-
in scsi_debug.

The first patch in this series fixes a minor issue found during this work. Next
two patches modify common/scsi_debug functions as preparation. The 4th patch
introduces the new function _configure_scsi_debug. Following 5 patches modify
the 5 test cases so that they can run with built-in scsi debug.

Of note is that still 9 test cases are left to require loadable scsi_debug. 8 of
them can not be run with built-in scsi_debug because the parameters they set are
read-only on sysfs. The other one test case scsi/007 has other failure symptom
now, so I leave it untouched at this moment.

[1] https://lore.kernel.org/linux-block/bc0b2c10-10e6-a1d9-4139-ac93ad3512b2@interlog.com/
[2] https://lore.kernel.org/linux-block/20220601064837.3473709-1-hch@lst.de/
[3] https://lore.kernel.org/linux-block/20220607124739.1259977-1-hch@lst.de/

Shin'ichiro Kawasaki (9):
  common/rc: skip module file check if modules path does not exist
  common/scsi_debug, tests/*: re-define _have_scsi_debug
  common/scsi_debug: factor out _setup_scsi_debug_vars
  common/scsi_debug: introduce _configure_scsi_debug
  scsi/004: allow to run with built-in scsi_debug
  scsi/005: allow to run with built-in scsi_debug
  block/001: allow to run with built-in scsi_debug and sd_mod
  block/002: allow to run with built-in scsi_debug
  block/027: allow to run with built-in scsi_debug

 common/rc         |   1 +
 common/scsi_debug | 139 ++++++++++++++++++++++++++++++++++++++++++----
 tests/block/001   |   4 +-
 tests/block/002   |   5 +-
 tests/block/009   |   3 +-
 tests/block/025   |   2 +-
 tests/block/027   |   6 +-
 tests/block/028   |   2 +-
 tests/block/032   |   3 +-
 tests/loop/004    |   5 +-
 tests/scsi/004    |  15 ++++-
 tests/scsi/005    |   5 +-
 tests/scsi/007    |   2 +-
 tests/zbd/008     |   5 +-
 tests/zbd/009     |   2 +-
 tests/zbd/010     |   2 +-
 16 files changed, 169 insertions(+), 32 deletions(-)