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06-26-2005 07:29 PM
06-26-2005 07:29 PM
NFS server not responding
I have an nfs filesystem mounted on linux RHEL3 from HPUX.
Every 4-5 minutes I get in /var/log/messages this message:
kernel: nfs: server serv1 not responding, timed out
in "nfsstat -c" I see that:
calls retrans
708028 77304
It's not so good. What are the steps that I can take to solve this problem?
The network cards on both servers configured on 1000, Full, Autoneg ON.
No problems in pign either.
Thanx.
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06-26-2005 07:39 PM
06-26-2005 07:39 PM
Re: NFS server not responding
kernel: application bug: dw.sapWT3_D00(3602) has SIGCHLD set to SIG_IGN but calls wait()
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06-27-2005 03:28 AM
06-27-2005 03:28 AM
Re: NFS server not responding
couple of things you can try.
1. change rsize=8192, wsize=8192 in mount options
2. RHEL3, i believe still has a default mount of udp, you can change the mount to tcp and nfsver=3
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06-27-2005 04:24 AM
06-27-2005 04:24 AM
Re: NFS server not responding
I'll try the first option.
About the second, it was TCP, so when the problems started we changed it to UDP it didn't help and it's already version 3.
thanx.
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06-27-2005 04:37 AM
06-27-2005 04:37 AM
Re: NFS server not responding
Why do I get NFS timeouts when I mount a Linux NFS server from my Solaris NFS client?
This applies to linux clients as well. These messages are shown when a client gives up trying to connect the the nfs server, this only happens with soft mounts, a hard mount has no timeout value. Two settings to mitigate this are "-o proto=tcp,hard" Since you are using Gig E you should also adjust the performance options.
--Dave
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06-27-2005 05:25 AM
06-27-2005 05:25 AM
Re: NFS server not responding
Before I assign points, I'll check it :)
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06-27-2005 05:56 AM
06-27-2005 05:56 AM
Re: NFS server not responding
--Dave
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06-28-2005 05:25 AM
06-28-2005 05:25 AM
Re: NFS server not responding
The idea is to see where packets are being lost and leading to the retransmitted NFS requests.
I don't have one for linux yet, but
ftp://ftp.cup.hp.com/dist/networking/briefs/annotated_netstat.txt
may be of some help.
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06-28-2005 07:17 AM
06-28-2005 07:17 AM
Re: NFS server not responding
I would suggest turning Autonegotiation to off and see if it gets any better. I would also see if other boxes have NFS problems with this box, perhaps even an HP-9000 or Solaris box.
The client and server nfs software should be up2date or yum current.
SEP
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
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07-06-2005 06:46 AM
07-06-2005 06:46 AM
Re: NFS server not responding
linux noapic
I also agree that the autonegotiation should be turned off, and configure fixed speed on both, the switch and the server.
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07-06-2005 06:50 AM
07-06-2005 06:50 AM