[LU-9661] sanity test_57b: MDC before 382704 != after 382680

• Type: Bug
• Resolution: Duplicate
• Priority: Minor
• Affects Version/s: Lustre 2.10.0
• Environment: Servers - 2.9.58, 3591, master; Client - 2.9.0, build 22, b2_9
• Severity: 3
• Assignee: Jian Yu
• Reporter: Maloo

Description

This issue was created by maloo for Saurabh Tandan <[e-mail]>

This issue relates to the following test suite run: https://testing.hpdd.intel.com/test_sessions/f37f95be-4af5-11e7-b400-5254006e85c2.

The sub-test test_57b failed with the following error:

MDC before 382704 != after 382680

test log:

== sanity test 57b: default LOV EAs are stored inside large inodes =================================== 01:33:33 (1496712813)
mcreating 100 files
total: 100 creates in 0.07 seconds: 1478.94 creates/second
Filesystem            1K-blocks   Used Available Use% Mounted on
10.2.4.49@tcp:/lustre    991128 493192    429096  54% /mnt/lustre
opening files to create objects/EAs
Filesystem            1K-blocks   Used Available Use% Mounted on
10.2.4.49@tcp:/lustre    991128 493192    429096  54% /mnt/lustre
 sanity test_57b: @@@@@@ FAIL: MDC before 382704 != after 382680 

This issue is seen only during rolling upgrade/downgrade testing. Checked results for interop testing but this issue didn't occured.

Other results with same issue.
https://testing.hpdd.intel.com/test_sessions/6729ebe2-4af9-11e7-91f4-5254006e85c2
https://testing.hpdd.intel.com/sub_tests/ebfa335c-4b05-11e7-bc6c-5254006e85c2

Issue Links

• duplicates: LU-9677 Checking OST counts in test suites where needed
• is related to: LU-9677 Checking OST counts in test suites where needed
• is related to: LU-4109 sanity test_57b failure: 'MDC before 15214812 != after 15214800'

Comments

[Jian Yu]

The test script will be improved in LU-9677.

[Jian Yu]

Thank you, Sarah.

[Sarah Liu]

We should improve the test scripts with checking OST count to avoid this kind of failure. I will open a ticket- LU-9677

[Saurabh Tandan (Inactive)]

Yeah sure, I will do that.
Thanks for looking into the issues.

[Jian Yu]

Thank you Saurabh.
Could you please re-run the tests with 2 OSTs and larger device size? (many tests in the test session failed with out of space issue)

[Saurabh Tandan (Inactive)]

I don't have them on vms and yes you are right may be that can be the issue. And I will make sure I use 2 OSTs .

[Jian Yu]

BTW, could you please run the tests with at least 2 OSTs in the future so as to avoid some configuration test failures?