[LU-6007] FIEMAP fails xfstests's fiemap-tester

• Type: Bug
• Resolution: Unresolved
• Priority: Major
• Affects Version/s: Lustre 2.7.0
• Severity: 3
• Assignee: WC Triage
• Reporter: Frank Zago (Inactive)

Description

Following resolution of bug LU-5933, I tried to run fiemap-tester from xfstests, and saw it fail. I don't know whether it's a Lustre or some bad assumption, but the same test works fine on ext4, and presumably all filesystem supported by the xfs test suite.

xfstests is easy to get and install. See http://xfs.org/index.php/Getting_the_latest_source_code. fiemap-tester will fail within seconds, with no particular parameter besides the name of a file on Lustre.

# ./src/fiemap-tester /mnt/lustre/qwerty
preallocation not supported, disabling
Starting infinite run, if you don't see any output then its working properly.
ERROR: couldn't find extent at 197
map is 'HHHHHHDHDDDHDDDHDHHHDHHHHHDHDHDDDDHDDDDHDHDDDDDDDHHHDHDHHHDDHHHDHHDHHDDHDDDHHHHHHDDDDHHDDHDDDDDDHHHDDHDDDHHHHHHDDHDDHDHDDHDHDDDHHDDHDDHHDDHHHHDDHHHDHDDDHDDDDDHHDHHDHHHHDHDDHHHDDDHHDDHDDDHDDHHDDHHDHDDDHDHDDHDDDDDHDDHHDHHHHHHDDDHHHHDDHDHHHDHHHHDDDDHHHHHHDHHHHDHDHDDHHHDHDDHHDDDDHHHHDHDHHDHDDHHDDDHDDHHHDHHDDHHHDHHHHDDDDHDHHDHHHHDHDDDHDDDHDHHDHHDDDHDHDHDDDHHHDHHHHHDDDDHHDDHDHHDHHHDHHDHHHHDHHHHHQ'
logical: [       6..       6] phys:    34998..   34998 flags: 0x80000000 tot: 1
logical: [       8..      10] phys:    34999..   35001 flags: 0x80000000 tot: 3
logical: [      12..      14] phys:    35002..   35004 flags: 0x80000000 tot: 3
...
logical: [     187..     188] phys:    35094..   35095 flags: 0x80000000 tot: 2
logical: [     191..     192] phys:    35096..   35097 flags: 0x80000000 tot: 2
logical: [     195..     195] phys:    35098..   35098 flags: 0x80000000 tot: 1
Problem comparing fiemap and map

Related to LU-920.

Issue Links

• is related to: LU-920 include xfstests into regular testing runs
• is related to: LU-1941 ZFS FIEMAP support
• is related to: LU-1923 filefrag with large fiemap buffer crashes client
• is related to: LU-5933 FIEMAP: FIEMAP_EXTENT_LAST is not always set
• is related to: LU-10335 Ubuntu1604 client sanity-130a: FAIL: filefrag -ves core dumped