Re: [xcat-user] statelite crashes with nfs server timeout

Sun, 15 Jul 2018 20:14:25 -0700

 
kdump doc link: https://xcat-docs.readthedocs.io/en/latest/guides/admin-guides/manage_clusters/ppc64le/diskless/customize_image/enable_kdump.html?highlight=kdump
 
Best Regards
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Yuan Bai (白媛)

CSTL HPC System Management Development
Tel:86-10-82451401
E-mail: by...@cn.ibm.com
Address: IBM ZGC Campus. Ring Building 28,
ZhongGuanCun Software Park,No.8 Dong Bei Wang West Road, Haidian District,
Beijing P.R.China 100193

IBM环宇大厦
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邮编:100193
 
 
----- Original message -----
From: "Song BJ Yang" <yang...@cn.ibm.com>
To: xcat-user@lists.sourceforge.net
Cc: xcat-user@lists.sourceforge.net
Subject: Re: [xcat-user] statelite crashes with nfs server timeout
Date: Mon, Jul 16, 2018 10:59 AM
 
Hi Jeff,
 
did you enabled kdump? the dump core file might help to find out the problem
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YANG Song (杨嵩)
IBM China System Technology Laboratory
Tel: 86-10-82452903
Email: yang...@cn.ibm.com
Address: Building 28, ZhongGuanCun Software Park,
No.8, Dong Bei Wang West Road, Haidian District Beijing 100193, PRC

北京市海淀区东北旺西路8号中关村软件园28号楼
邮编: 100193
 
 
----- Original message -----
From: David Johnson <david_john...@brown.edu>
To: xCAT Users Mailing list <xcat-user@lists.sourceforge.net>
Cc:
Subject: Re: [xcat-user] statelite crashes with nfs server timeout
Date: Fri, Jul 13, 2018 10:58 PM
 
I’m not sure, but this seems to have a whiff of a problem we had a while back, where 
we forgot to make appropriate holes in the firewall.  GPFS died after the node had been
up successfully for a while.  It worked because connection initiated from the host to the
GPFS servers, but traffic back to the node was blocked after the session was dropped from
the firewall table of active connections.
 
On Jul 13, 2018, at 5:06 AM, Javier Ron <j....@qmul.ac.uk> wrote:
 

Hello,
 
It sounds like an NFS thing, you could try different options for the mount
 
 

 

From: Jeff Berry <jeff.be...@mrc-cbu.cam.ac.uk>
Sent: 12 July 2018 14:35:53
To: xCAT Users Mailing list
Subject: [xcat-user] statelite crashes with nfs server timeout
 
Good afternoon all,

I've got some Centos 7.5 statelite nodes which seem to be booting properly, but after being up for less than a day, they crash with what look like nfs timeouts.  The server is up, and if I rpower reset the nodes, they come back up with no problem, but then they crash again overnight.

this may not be an xcat problem at all, it may be an nfs issue, but I thought I'd toss it out here and see if it rang any bells for anyone,

Jeff Berry, MRC CBSU
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