[LU-11803] sanity test 255c fails with 'Ladvise test 12, bad lock count, returned 1, actual 0'

• Type: Bug
• Resolution: Fixed
• Priority: Critical
• Fix Version/s: Lustre 2.14.0
• Affects Version/s: Lustre 2.12.0
• Labels: ubuntu
• Environment: Ubuntu 18.04 clients
• Severity: 3
• Assignee: James A Simmons
• Reporter: James Nunez (Inactive)

Description

sanity test_255c fails with 'Ladvise test 12, bad lock count, returned 1, actual 0'. It looks like this is only impacting Ubuntu 18.04 client testing.

Looking at the client test_log from https://testing.whamcloud.com/test_sets/d1b23f66-fdd4-11e8-a97c-52540065bddc , a problem is that we can’t find lock_unused_count

== sanity test 255c: suite of ladvise lockahead tests ================================================ 19:46:58 (1544471218)
CMD: trevis-19vm3 /usr/sbin/lctl get_param -n version 2>/dev/null ||
				/usr/sbin/lctl lustre_build_version 2>/dev/null ||
				/usr/sbin/lctl --version 2>/dev/null | cut -d' ' -f2
Starting test test10 at 1544471219
Finishing test test10 at 1544471219
CMD: trevis-19vm3 /usr/sbin/lctl get_param -n ost.OSS.ost.stats
Starting test test11 at 1544471219
Finishing test test11 at 1544471219
CMD: trevis-19vm3 /usr/sbin/lctl get_param -n ost.OSS.ost.stats
error: get_param: param_path 'ldlm/namespaces/lustre-OST0000*osc-f*/lock_unused_count': No such file or directory
Starting test test12 at 1544471220
Finishing test test12 at 1544471220
error: get_param: param_path 'ldlm/namespaces/lustre-OST0000*osc-f*/lock_unused_count': No such file or directory

There are several example of this failure all for Ubuntu at
https://testing.whamcloud.com/test_sets/bd048afa-f713-11e8-b67f-52540065bddc
https://testing.whamcloud.com/test_sets/b223ccee-f778-11e8-b67f-52540065bddc
https://testing.whamcloud.com/test_sets/50f5970e-fa16-11e8-8a18-52540065bddc

Issue Links

• is duplicated by: LU-11806 sanity-hsm, sanity-dom, racer fails to run testing due to client mount fails with ‘File exists’
• is duplicated by: LU-11808 sanity-flr test 0b and 0c fails with ‘pool_new failed lustre.test_0b'
• is duplicated by: LU-11823 sanity-flr test 0b and 0c fails with ‘pool_new failed lustre.test_0b' on ARM
• is duplicated by: LU-12247 sanityn test 34 fails with 'test_34 returned 1'
• is related to: LU-13499 client UUID is truncated
• is related to: LU-11809 conf-sanity test 28A hangs on file system mount
• is related to: LU-13118 change client instance to respect ASLR
• is related to: LU-12521 print_instance() incorrect if fsname contains a dash
• is related to: LU-8066 Move lustre procfs handling to sysfs and debugfs.
• is related to: LU-11838 Support linux kernel version 4.18