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[Bug 1865967] Re: xfs fill_fs test in fallocate06 from ubuntu_ltp_syscalls failed

To: group.of.nepali.translators@xxxxxxxxxxxxxxxxxxx
From: Steve Langasek <1865967@xxxxxxxxxxxxxxxxxx>
Date: Thu, 02 Jul 2020 20:03:11 -0000
Reply-to: Bug 1865967 <1865967@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
** Changed in: linux (Ubuntu Disco)
       Status: Fix Committed => Won't Fix

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https://bugs.launchpad.net/bugs/1865967

Title:
  xfs fill_fs test in fallocate06 from ubuntu_ltp_syscalls failed

Status in ubuntu-kernel-tests:
  Fix Released
Status in linux package in Ubuntu:
  Fix Released
Status in linux source package in Xenial:
  Fix Released
Status in linux source package in Bionic:
  Fix Released
Status in linux source package in Disco:
  Won't Fix
Status in linux source package in Eoan:
  Fix Released

Bug description:
  == SRU Justification ==
  The fill_fs test for XFS in fallocate06 from ubuntu_ltp_syscalls will fail on X/B/D/E:
  tst_test.c:1290: INFO: Testing on xfs
  tst_mkfs.c:90: INFO: Formatting /dev/loop1 with xfs opts='' extra opts=''
  tst_test.c:1229: INFO: Timeout per run is 0h 05m 00s
  fallocate06.c:117: INFO: Copy-on-write is not supported
  fallocate06.c:168: INFO: Case 1. Fill FS: no; Use copy on write: no
  fallocate06.c:157: PASS: write() successful
  fallocate06.c:201: PASS: Misaligned allocation works as expected
  fallocate06.c:157: PASS: fallocate(FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE) successful
  fallocate06.c:237: PASS: fallocate(FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE) cleared the correct file range
  fallocate06.c:168: INFO: Case 2. Fill FS: yes; Use copy on write: no
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file0 size 21710183
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file1 size 8070086
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file2 size 3971177
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file3 size 36915315
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file4 size 70310993
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file5 size 4807935
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file6 size 90739786
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file7 size 76896492
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file8 size 72228649
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file9 size 36207821
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file10 size 81483962
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file11 size 92198827
  tst_fill_fs.c:59: INFO: write(): ENOSPC (28)
  fallocate06.c:153: FAIL: Unexpected return value from write(): 7680 (expected 8192)
  fallocate06.c:157: PASS: fallocate(FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE) successful
  fallocate06.c:237: PASS: fallocate(FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE) cleared the correct file range

  == Fix ==
  * e093c4be (xfs: Fix tail rounding in xfs_alloc_file_space())

  This patch can be cherry-picked in D/E and needs some minor context
  adjustmest on X/B.

  == Test ==
  Test kernels can be found here:
  https://people.canonical.com/~phlin/kernel/lp-1865967-xfs-fallocate06/

  All patched kernels are working as expected, this issue will no longer
  exist on XFS:
  tst_test.c:1290: INFO: Testing on xfs
  tst_mkfs.c:90: INFO: Formatting /dev/loop5 with xfs opts='' extra opts=''
  tst_test.c:1229: INFO: Timeout per run is 0h 05m 00s
  fallocate06.c:117: INFO: Copy-on-write is not supported
  fallocate06.c:168: INFO: Case 1. Fill FS: no; Use copy on write: no
  fallocate06.c:157: PASS: write() successful
  fallocate06.c:201: PASS: Misaligned allocation works as expected
  fallocate06.c:157: PASS: fallocate(FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE) successful
  fallocate06.c:237: PASS: fallocate(FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE) cleared the correct file range
  fallocate06.c:168: INFO: Case 2. Fill FS: yes; Use copy on write: no
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file0 size 21710183
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file1 size 8070086
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file2 size 3971177
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file3 size 36915315
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file4 size 70310993
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file5 size 4807935
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file6 size 90739786
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file7 size 76896492
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file8 size 72228649
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file9 size 36207821
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file10 size 81483962
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file11 size 92198827
  tst_fill_fs.c:59: INFO: write(): ENOSPC (28)
  fallocate06.c:157: PASS: write() successful
  fallocate06.c:201: PASS: Misaligned allocation works as expected
  fallocate06.c:157: PASS: fallocate(FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE) successful
  fallocate06.c:237: PASS: fallocate(FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE) cleared the correct file range

  == Regression Potential ==
  Low, this ensures all the blocks are properly allocated and it's only affecting the allocation on XFS.


  == Original Bug Report ==
  Test failure in fallocate06 was composed by two issues, one is btrfs fill_fs test issue addressed in bug 1866323.

  Another is this one, this is the case 2 of xfs (fill_fs):
  tst_test.c:1290: INFO: Testing on xfs
  tst_mkfs.c:90: INFO: Formatting /dev/loop1 with xfs opts='' extra opts=''
  tst_test.c:1229: INFO: Timeout per run is 0h 05m 00s
  fallocate06.c:117: INFO: Copy-on-write is not supported
  fallocate06.c:168: INFO: Case 1. Fill FS: no; Use copy on write: no
  fallocate06.c:157: PASS: write() successful
  fallocate06.c:201: PASS: Misaligned allocation works as expected
  fallocate06.c:157: PASS: fallocate(FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE) successful
  fallocate06.c:237: PASS: fallocate(FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE) cleared the correct file range
  fallocate06.c:168: INFO: Case 2. Fill FS: yes; Use copy on write: no
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file0 size 21710183
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file1 size 8070086
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file2 size 3971177
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file3 size 36915315
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file4 size 70310993
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file5 size 4807935
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file6 size 90739786
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file7 size 76896492
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file8 size 72228649
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file9 size 36207821
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file10 size 81483962
  tst_fill_fs.c:32: INFO: Creating file mntpoint/file11 size 92198827
  tst_fill_fs.c:59: INFO: write(): ENOSPC (28)
  fallocate06.c:153: FAIL: Unexpected return value from write(): 7680 (expected 8192)
  fallocate06.c:157: PASS: fallocate(FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE) successful
  fallocate06.c:237: PASS: fallocate(FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE) cleared the correct file range

  This test failures can be found from X to E
  X - 2 failures reported:
  fallocate06.c:153: FAIL: Unexpected return value from write(): 7680 (expected 8192)
  fallocate06.c:146: FAIL: fallocate(FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE) failed unexpectedly: ENOSPC (28)

  Test terminates with:
  tst_test.c:1274: BROK: Test killed by SIGIOT/SIGABRT!

  https://pastebin.ubuntu.com/p/9FfVrZkQN8/

  B - 2 failures reported:
  fallocate06.c:153: FAIL: Unexpected return value from write(): 7680 (expected 8192)
  fallocate06.c:146: FAIL: fallocate(FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE) failed unexpectedly: ENOSPC (28)

  Test terminates with:
  tst_test.c:1274: BROK: Test killed by SIGIOT/SIGABRT!

  https://pastebin.ubuntu.com/p/Zc9TW4sQKF/

  D - 2 failures reported:
  fallocate06.c:153: FAIL: Unexpected return value from write(): 7680 (expected 8192)
  fallocate06.c:146: FAIL: fallocate(FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE) failed unexpectedly: ENOSPC (28)

  Test terminates with:
  tst_test.c:1274: BROK: Test killed by SIGIOT/SIGABRT!

  https://pastebin.ubuntu.com/p/cryTnnn5wF/

  E - 2 failures reported:
  fallocate06.c:151: FAIL: Unexpected return value from write(): 7680 (expected 8192)
  fallocate06.c:146: FAIL: fallocate(FALLOC_FL_PUNCH_HOLE | FALLOC_FL_KEEP_SIZE) failed unexpectedly: ENOSPC (28)

  Test terminates with:
  tst_test.c:1274: BROK: Test killed by SIGIOT/SIGABRT!

  https://pastebin.ubuntu.com/p/FXTZpsX7Qb/

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