XFS NFS Fileserver, kernel: nfs: server server not responding, still trying
Subsystems (2)
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Hi List !
Since upgrading to Kernel 2.4.22-xfs (direct from SGI-CVS) I get this problems, during bigger file NFS-copying (local XFS ->=20 remote NFS-based filesserver (also completely in XFS).
Nov 7 17:20:02 pc2 kernel: nfs: server server not responding, still trying
Nov 7 17:20:02 pc2 kernel: nfs: server server not responding, still trying Nov 7 17:20:02 pc2 kernel: nfs: server server OK
This is my Test-Setup:
server: 64GB XFS-fs on ICP-Vortex (Hardware Raid5) SCSI controller
I tried everything, mentioned on the NFS FAQ Page to avoid this problems.
http://nfs.sourceforge.net/nfs-howto/performance.html#TIMEOUT
jojo@pc2:jojo $ ssh root@localhost
Linux pc2 2.4.22-xfs #2 Don Okt 23 17:01:40 CEST 2003 i686 unknown
root@pc2:root# nfsstat [...] Client rpc stats: calls retrans authrefrsh 1483912 21137 0 [...]
root@pc2:root# echo 262144 > /proc/sys/net/core/rmem_default root@pc2:root# echo 262144 > /proc/sys/net/core/rmem_max root@pc2:root# mount /home -o remount,timeo=3D14,retrans=3D6 Copy Try -> Same Problem
root@pc2:root# mount /home -o remount,timeo=3D30,retrans=3D12 root@pc2:root# mount /home -o remount,timeo=3D30,retrans=3D12,rsize=3D3276= 8,wsize=3D32768
root@pc2:jojo# nfsstat =2E.. Client rpc stats: calls retrans authrefrsh 1752966 23343 0 =2E..
root@pc2:jojo# mount /home -o remount,timeo=3D30,retrans=3D12,rsize=3D3276= 8,wsize=3D32768,nfsvers=3D3 root@pc2:jojo# mount server:/home on /home type nfs (rw,lock,timeo=3D30,retrans=3D12,rsize=3D327= 68,wsize=3D32768,nfsvers=3D3,addr=3D192.168.11.1) Copy Try -> Same Problem
This Kernel 2.4.22-xfs is in case of NFS performance the worst since 2.4.7 = and reiserfs or the userspace
nfs daemon.
How can we stop the problem ?
Any ideas ?
TIA !
mfG
J=FCrgen
automatiX Linux Support Crew
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J=FCrgen Sauer - AutomatiX GmbH, +49-4209-4699, [email protected] ** ** Das Linux Systemhaus - Service - Support - Server - L=F6sungen **
** http://www.automatix.de ICQ: #344389676 **
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Quoted 5 lines · Juergen Sauer
calls retrans authrefrsh 1483912 21137 0 ... calls retrans authrefrsh 1752966 23343 0
The number of "retrans" is pretty high...
Quoted 1 line
...rsize=32768,wsize=32768...
... and I think that this is the problem. Try lowering the sizes to something more closely matched to the network that you are using, like 8k or even lower. Although you said that you followed the NFS FAQ ???
Signature · 18 lines
Bogdan Costescu IWR - Interdisziplinaeres Zentrum fuer Wissenschaftliches Rechnen Universitaet Heidelberg, INF 368, D-69120 Heidelberg, GERMANY Telephone: +49 6221 54 8869, Telefax: +49 6221 54 8868 E-mail: [email protected] ------------------------------------------------------- This SF.Net email sponsored by: ApacheCon 2003, 16-19 November in Las Vegas. Learn firsthand the latest developments in Apache, PHP, Perl, XML, Java, MySQL, WebDAV, and more! http://www.apachecon.com/ _______________________________________________ NFS maillist - [email protected] https://lists.sourceforge.net/lists/listinfo/nfs
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Am Freitag, 7. November 2003 18:34 schrieb Bogdan Costescu:
Quoted 1 line · Juergen Sauer
=20
Quoted 5 lines
Quoted 5 lines
calls retrans authrefrsh 1483912 21137 0 ... calls retrans authrefrsh 1752966 23343 0
=20
Quoted 1 line
The number of "retrans" is pretty high...
That's it. ;-<
=20
Quoted 1 line
Quoted 1 line
...rsize=3D32768,wsize=3D32768...
I moved to lower and higher values. Including 8192, 4096, 1024
Quoted 2 lines
... and I think that this is the problem. Try lowering the sizes to=20 something more closely matched to the network that you are using, like 8k=
=20
Quoted 1 line
or even lower. Although you said that you followed the NFS FAQ ???
Yepp, I did the posting after the behavior changed dramatically in 2.4.22-xfs against 2.4.20-xfs.
Thanks so far.
mfG
J=FCrgen
automatiX Linux Support Crew
=2D --=20
J=FCrgen Sauer - AutomatiX GmbH, +49-4209-4699, [email protected] ** ** Das Linux Systemhaus - Service - Support - Server - L=F6sungen **
** http://www.automatix.de ICQ: #344389676 **
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Solution/Work around: Re: XFS NFS Fileserver, kernel: nfs: server server not responding, still trying
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Am Samstag, 8. November 2003 09:42 schrieb Juergen Sauer:
Quoted 8 lines
Am Freitag, 7. November 2003 18:34 schrieb Bogdan Costescu:
Quoted 1 line · Juergen Sauer
=20
Quoted 5 lines
Quoted 5 lines
calls retrans authrefrsh 1483912 21137 0 ... calls retrans authrefrsh 1752966 23343 0
Quoted 9 lines
=20
Quoted 1 line
The number of "retrans" is pretty high...
That's it. ;-<
=20Quoted 1 line
Quoted 1 line
...rsize=3D32768,wsize=3D32768...
I moved to lower and higher values. Including 8192, 4096, 1024 =20
Quoted 2 lines
... and I think that this is the problem. Try lowering the sizes to something more closely matched to the network that you are using, like =
8k
Quoted 3 lines
Quoted 1 line
or even lower. Although you said that you followed the NFS FAQ ???
Yepp, I did the posting after the behavior changed dramatically in 2.4.22-xfs against 2.4.20-xfs.
I found the reason for the troubles. ;-<<
The NVIDIA Networkdriver is buggy. I opend an incident on the NVIDIA Support for it, it's the matter of the driver crew.
Meanvile work around is putting this into modules.conf:
options nvnet optimization=3D0 speed=3D2 duplex=3D1
optimization=3D0 -> No throughput "optimizsation"
speed=3D2 -> 100 Mbit/s
duplex=3D1 -> no Duplex
Never thought, that s driver bug could infect in Linux.
I am definitely used to get execllent drivers out of the kernel, from the kernel crew. That are the free/GPLed drivers.
The closed source driver nvnet (Nvidia/Nforce2 Chipset) taints the kernel and breaks the speed. In kernel 2.4.
There are only 3,33 MByte/sec left after those "optimazations".
mfG
J=FCrgen
automatiX Linux Support Crew
=2D --=20
J=FCrgen Sauer - AutomatiX GmbH, +49-4209-4699, [email protected] ** ** Das Linux Systemhaus - Service - Support - Server - L=F6sungen **
** http://www.automatix.de ICQ: #344389676 **
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