Comment 7 for bug 1902254

Bionic/xfstests
======

Original/patched kernel versions:

 $ grep -h ^PLATFORM xfstests.log.* | sort -u
 PLATFORM -- Linux/s390x mfo-s390x-bionic 4.15.0-122-generic #124+test20201026b1 SMP Mon Oct 26 13:10:37 -03 2020
 PLATFORM -- Linux/s390x mfo-s390x-bionic 4.15.0-122-generic #124-Ubuntu SMP Thu Oct 15 13:02:05 UTC 2020

Original kernel:
---

 $ VERSION='4.15.0-122-generic #124-Ubuntu'

Number of runs:

 $ grep -h -e ^Fail -e ^PLATFORM xfstests.log.* | grep -A1 "$VERSION" | grep -c Failures:
 10

 $ RUNS=10

Consistent fail set:

 $ grep -h -e ^Fail -e ^PLATFORM xfstests.log.* | grep -A1 "$VERSION" | grep ^Failures: | cut -d' ' -f2- | tr ' ' '\n' | sort | uniq -c | sort | grep -w $RUNS
      10 btrfs/186
      10 btrfs/193
      10 btrfs/200
      10 btrfs/202
      10 btrfs/204
      10 btrfs/205
      10 btrfs/214
      10 btrfs/219
      10 btrfs/220
      10 btrfs/221
      10 btrfs/222
      10 generic/260
      10 generic/286
      10 generic/301
      10 generic/371
      10 generic/405
      10 generic/407
      10 generic/465
      10 generic/480
      10 generic/488
      10 generic/502
      10 generic/513
      10 generic/526
      10 generic/527
      10 generic/546
      10 generic/562
      10 generic/565

Flaky fail set:

 $ grep -h -e ^Fail -e ^PLATFORM xfstests.log.* | grep -A1 "$VERSION" | grep ^Failures: | cut -d' ' -f2- | tr ' ' '\n' | sort | uniq -c | sort | grep -w -v $RUNS
       1 btrfs/028
       1 generic/089
       1 generic/464
       2 generic/175
       3 generic/476
       4 generic/531
       7 btrfs/078
       8 btrfs/010
       8 generic/074
       8 generic/142
       8 generic/143
       9 generic/133
       9 generic/475

Patched kernel:
---

 $ VERSION='4.15.0-122-generic #124+test20201026b1'

Number of runs:

 $ grep -h -e ^Fail -e ^PLATFORM xfstests.log.* | grep -A1 "$VERSION" | grep -c Failures:
 10

Consistent fail set:

 $ grep -h -e ^Fail -e ^PLATFORM xfstests.log.* | grep -A1 "$VERSION" | grep ^Failures: | cut -d' ' -f2- | tr ' ' '\n' | sort | uniq -c | sort | grep -w $RUNS
      10 btrfs/186
      10 btrfs/193
      10 btrfs/200
      10 btrfs/202
      10 btrfs/204
      10 btrfs/205
      10 btrfs/214
      10 btrfs/219
      10 btrfs/220
      10 btrfs/221
      10 btrfs/222
      10 generic/260
      10 generic/286
      10 generic/301
      10 generic/371
      10 generic/405
      10 generic/407
      10 generic/465
      10 generic/475 <<-- New but not regression; failed 9/10 in original kernel.
      10 generic/480
      10 generic/488
      10 generic/502
      10 generic/513
      10 generic/526
      10 generic/527
      10 generic/546
      10 generic/562
      10 generic/565

Flaky fail set:

 $ grep -h -e ^Fail -e ^PLATFORM xfstests.log.* | grep -A1 "$VERSION" | grep ^Failures: | cut -d' ' -f2- | tr ' ' '\n' | sort | uniq -c | sort | grep -w -v $RUNS
       1 btrfs/028
       1 generic/089
       1 generic/102
       1 generic/269
       2 generic/166
       2 generic/464
       2 generic/476
       4 btrfs/010
       4 generic/074
       4 generic/142
       4 generic/143
       4 generic/531
       6 generic/133
       8 generic/175 << Increased from 2/10 to 8/10 but it seems a regression from other btrfs patches; see Focal.
       9 btrfs/078