[LU-2996] ptlrpc doesn't response under the heavy memory pressure Created: 20/Mar/13  Updated: 11/Mar/16  Resolved: 11/Mar/16

Status: Resolved
Project: Lustre
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Bug Priority: Minor
Reporter: Shuichi Ihara (Inactive) Assignee: Emoly Liu
Resolution: Incomplete Votes: 0
Labels: None
Environment:

Lustre-1.8.8, CentOS6.1


Attachments: File messages     Text File t324_vmcore_crash.log    
Severity: 3
Rank (Obsolete): 7306

 Description   

Under tha heavy memory pressure, client doesn't response in a timely manner, but even system goes to be back normal, a lot of call traces that caused by ptlrpc. Attached are client's syslog and stack trace after we got crashdump.



 Comments   
Comment by Peter Jones [ 21/Mar/13 ]

Hi Emoly

Could you please help with this issue?

Thanks

Peter

Comment by Emoly Liu [ 21/Mar/13 ]

OK, I will check the logs.

Comment by Emoly Liu [ 25/Mar/13 ]

From the log we can see that there were two lustre file systems mounted on this client node and each lustre filesystem had tens of OSTs at least. During the log time, the client node (lustre client) was restarted five times.

Ihara, to understand the issue clearly, could you please introduce more details about the system environment and related operations? Thanks.

Comment by Shuichi Ihara (Inactive) [ 02/Apr/13 ]

Emoly,

yes, two Lustre filesystem are mounted
and some heavey memory pressure application were running on this client and client get OOM, the rebooted.

Comment by Shuichi Ihara (Inactive) [ 06/Apr/13 ]

Emoly, any updates?

Comment by John Fuchs-Chesney (Inactive) [ 25/Feb/16 ]

Hello Ihara,

This ticket has become very old – do you need any more work on it or may we mark it as resolved?

Many thanks,
~ jfc.

Comment by John Fuchs-Chesney (Inactive) [ 11/Mar/16 ]

Resolving as incomplete.
~ jfc.

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