[#LU-12121] DOM: BRW to missing obj?

[LU-12121] DOM: BRW to missing obj? Created: 26/Mar/19 Updated: 07/May/19 Resolved: 27/Mar/19
Status:	Resolved
Project:	Lustre
Component/s:	None
Affects Version/s:	Lustre 2.12.0
Fix Version/s:	None

Type:

Bug

Priority:

Minor

Reporter:

Stephane Thiell

Assignee:

Mikhail Pershin

Resolution:

Duplicate

Votes:

Labels:

None

Environment:

CentOS 7.6

Issue Links:

Duplicate
duplicates	~~LU-11359~~	racer test 1 times out with client hu...	Resolved

Severity:

Rank (Obsolete):

9223372036854775807

Description

From time to time, I can see BRW to missing obj error on MDTs with DOM:

fir-md1-s2: Mar 26 10:45:33 fir-md1-s2 kernel: LustreError: 90902:0:(mdt_io.c:442:mdt_preprw_write()) fir-MDT0003: BRW to missing obj [0x28000f666:0xca48:0x0]
fir-md1-s2: Mar 26 10:48:36 fir-md1-s2 kernel: LustreError: 91887:0:(mdt_io.c:442:mdt_preprw_write()) fir-MDT0003: BRW to missing obj [0x28000f7a6:0x1bfa:0x0]
fir-md1-s2: Mar 26 10:48:38 fir-md1-s2 kernel: LustreError: 91726:0:(mdt_io.c:442:mdt_preprw_write()) fir-MDT0003: BRW to missing obj [0x28000f666:0xd1a1:0x0]
fir-md1-s2: Mar 26 10:49:05 fir-md1-s2 kernel: LustreError: 91846:0:(mdt_io.c:442:mdt_preprw_write()) fir-MDT0003: BRW to missing obj [0x28000f52a:0x98bf:0x0]
fir-md1-s2: Mar 26 10:53:48 fir-md1-s2 kernel: LustreError: 91423:0:(mdt_io.c:442:mdt_preprw_write()) fir-MDT0003: BRW to missing obj [0x28000f7bb:0x6d61:0x0]

Any idea of what is causing this, is it just a warning? Note: we haven't noticed any real issue, I am just wondering.

Thanks!
Stephane

Comments

Comment by Peter Jones [ 26/Mar/19 ]

Mike

Can you please comment?

Thanks

Peter

Comment by Mikhail Pershin [ 27/Mar/19 ]

That may happens when DOM files are deleted, the object on MDT is deleted much quicker than on OST so client may do data flush for already deleted object. That is handled also in https://review.whamcloud.com/34071

Comment by Peter Jones [ 27/Mar/19 ]

Seems that we can close this as a duplicate then and should focus on getting ~~LU-11359~~ finalized ASAP

Comment by Stephane Thiell [ 30/Mar/19 ]

Thanks!!

Comment by Stephane Thiell [ 07/May/19 ]

These messages don't show up anymore since we're using https://review.whamcloud.com/#/c/34071/ everywhere.

Generated at Sat Feb 10 02:49:50 UTC 2024 using Jira 9.4.14#940014-sha1:734e6822bbf0d45eff9af51f82432957f73aa32c.

[LU-12121] DOM: BRW to missing obj? Created: 26/Mar/19 Updated: 07/May/19 Resolved: 27/Mar/19