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

• Type: Bug
• Resolution: Duplicate
• Priority: Minor
• Affects Version/s: Lustre 2.12.0
• Environment: CentOS 7.6
• Severity: 3
• Assignee: Mikhail Pershin
• Reporter: Stephane Thiell

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

Issue Links

• duplicates: LU-11359 racer test 1 times out with client hung in dir_create.sh, ls, … and MDS in ldlm_completion_ast()