[LU-5617] MDS hang and would like to know the cause

• Type: Question/Request
• Resolution: Duplicate
• Priority: Minor
• Affects Version/s: Lustre 2.4.2
• Environment: Linux monkey-mds-10-3.local 2.6.32-358.23.2.el6_lustre.x86_64 #1 SMP Thu Dec 19 19:57:45 PST 2013 x86_64 x86_64 x86_64 GNU/Linux
• Assignee: Niu Yawei (Inactive)
• Reporter: Haisong Cai (Inactive)

Description

We had MDS hanging this morning, to a point where signing on server was denied. We had to power cycling the server in order to regain access to it.

I am uploading "/var/log/messages" and 2 kernel trace dumping.
I would need you help in interpreting from these logs and let me know
where is likely the problem, the Lustre, networking, client overloading, and etc.

thanks