[LU-10403] sanityn test_32b: @@@@@@ FAIL: lockless i/o works when disabled Created: 18/Dec/17 Updated: 18/Dec/17 Resolved: 18/Dec/17 |
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| Status: | Resolved |
| Project: | Lustre |
| Component/s: | None |
| Affects Version/s: | None |
| Fix Version/s: | None |
| Type: | Bug | Priority: | Major |
| Reporter: | Mikhail Pershin | Assignee: | James A Simmons |
| Resolution: | Duplicate | Votes: | 0 |
| Labels: | None | ||
| Issue Links: |
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| Severity: | 3 | ||||||||
| Rank (Obsolete): | 9223372036854775807 | ||||||||
| Description |
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After the last update this test starts to fail: and more |
| Comments |
| Comment by Mikhail Pershin [ 18/Dec/17 ] |
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I've done git bisect and it shows commit 4f2a5d5887492da9abe320074511811415e0a06c as source of problem. This is change https://review.whamcloud.com/#/c/30063/ from This change passed own tests so it seems that issue is result of interaction with some other patch, anyway, reverting of this particular patch solves the problem |
| Comment by Peter Jones [ 18/Dec/17 ] |
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Should have been fixed by revert of offending patch |
| Comment by James A Simmons [ 18/Dec/17 ] |
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Oh that is strange. I will track down what the conflict is. Thanks. |
| Comment by Bob Glossman (Inactive) [ 18/Dec/17 ] |
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suspect it may be due to time64_t being signed while cfs_time_t is unsigned |
| Comment by James A Simmons [ 18/Dec/17 ] |
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So I attempted to reproduce the problem locally and I can't. It passes sanityn 32b. I have a theory why it fails. Using seconds is to large of a time gap. The pages are not being purged because the time that passes is less than one second. I bet if I move to nanoseconds this problem will go away. |
| Comment by Mikhail Pershin [ 18/Dec/17 ] |
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James, I see that each run in my local vm, so you may be right about time gap. |