[LU-10869] conf-sanity test 76a fails with 'error while apply max_dirty_mb'

• Type: Bug
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: Lustre 2.11.0
• Fix Version/s: Lustre 2.12.0, Lustre 2.10.5
• Labels: ubuntu
• Severity: 3
• Assignee: Nathaniel Clark
• Reporter: James Nunez

Description

conf-sanity test_76a fails to ‘/usr/sbin/lctl set_param -P osc.*.max_dirty_mb=64’. The last thing seen in the test_log is

Change MGS params
max_dirty_mb: 32
new_max_dirty_mb: 64
CMD: trevis-50vm10 /usr/sbin/lctl set_param -P osc.*.max_dirty_mb=64
CMD: trevis-52vm7.trevis.hpdd.intel.com /usr/sbin/lctl get_param -n osc.*.max_dirty_mb |
                   head -1
CMD: trevis-52vm7.trevis.hpdd.intel.com /usr/sbin/lctl get_param -n osc.*.max_dirty_mb |
                   head -1
Waiting 90 secs for update
CMD: trevis-52vm7.trevis.hpdd.intel.com /usr/sbin/lctl get_param -n osc.*.max_dirty_mb |
                   head -1
…
CMD: trevis-52vm7.trevis.hpdd.intel.com /usr/sbin/lctl get_param -n osc.*.max_dirty_mb |
                   head -1
Update not seen after 90s: wanted '64' got '32'
32
 conf-sanity test_76a: @@@@@@ FAIL: error while apply max_dirty_mb

 

On the MDS console and dmesg, we see that the command issues on the MGS/MDS is

[33955.881468] Lustre: DEBUG MARKER: trevis-50vm9.trevis.hpdd.intel.com: executing set_default_debug -1 all 4
[33965.425226] Lustre: DEBUG MARKER: /usr/sbin/lctl set_param -P osc.*.max_dirty_mb=64
[34056.950846] Lustre: DEBUG MARKER: /usr/sbin/lctl mark  conf-sanity test_76a: @@@@@@ FAIL: error while apply max_dirty_mb

 

This test has failed with this error previously while testing the patch for LU-9325, https://review.whamcloud.com/#/c/30539/.

 

Logs for this failure are at

https://testing.hpdd.intel.com/test_sets/a77f2e70-3543-11e8-95c0-52540065bddc

 

Issue Links

• is related to: LU-6063 conf-sanity test_76a fails on RHEL7, SLES12
• is related to: LU-9431 class_process_proc_param can't handle sysfs