[LU-4804] Test failure sanity test_17n: create remote dir error

• Status: Resolved
• Project: Lustre
• Affects Version/s: Lustre 2.6.0
• Type: Bug
• Priority: Minor
• Reporter: Nathaniel Clark
• Assignee: WC Triage
• Resolution: Cannot Reproduce
• Severity: 3

Description

This issue was created by maloo for Nathaniel Clark <[e-mail]>

This issue relates to the following test suite run: http://maloo.whamcloud.com/test_sets/97cf2bae-b21d-11e3-9a4b-52540035b04c.

The sub-test test_17n failed with the following error:

create remote dir error 0

Info required for matching: sanity 17n

Comments

[Jodi Levi (Inactive)]

Di,
Can you please comment on this ticket?
Thank you!

[Di Wang]

Just checking the debug log, LWP(between other MDTs and MDT0) is evicted, but I am not sure which RPC is failed because of this, we already add failover support for seq lookup in LU-4571, so it has to be some other RPC. Unfortunately, I can not find further information in the debug log. Probably we should go with option2 suggested in LU-4571, i.e. not evict LWP during reconnect after reboot, but then it needs quota to set special flag not to replay the quota lock during recovery. Niu, Could you please comment here?

[Bruno Faccini (Inactive)]

Di,
Am I correct when I think the scenario you describe can also apply to other stages of sanity/test_17n, like the one ending with a "destroy remote dir" error ? I am thinking about this because one of my test session triggered this error (https://maloo.whamcloud.com/test_sets/92c4a4ee-e4fa-11e3-a294-52540035b04c), like a few others I found into Maloo stats/search, and the related Lustre debug-logs seem to indicate that an -ESTALE/-116 was returned due to some communication failure between MDSs.

[Di Wang]

Bruno,

I did not see the connection between MDT0 and MDT1 is being evicted according to the information in https://maloo.whamcloud.com/test_sets/92c4a4ee-e4fa-11e3-a294-52540035b04c, probably different problem as I see. Hmm, I saw this in the debug message,

Lustre: lustre-MDT0001-osp-MDT0000: Connection to lustre-MDT0001 (at 10.1.5.234@tcp) was lost; in progress operations using this service will wait for recovery to complete
Lustre: lustre-MDT0001-osp-MDT0000: Connection restored to lustre-MDT0001 (at 10.1.5.234@tcp)
LustreError: 11613:0:(osp_object.c:355:osp_attr_get()) lustre-MDT0001-osp-MDT0000:osp_attr_get update error [0x440000400:0x22:0x0]: rc = -116

You probably need create a new ticket, or is there one already? Thanks.

[Nathaniel Clark]

Bruno,
I created LU-5130 for "destroy remote dir" error

[Andreas Dilger]

Haven't seen this in a long time.