From: "Lever, Charles" <Charles.Lever@netapp.com>
Subject: RE: Sporadic timeout problems during streaming to nfs server
Date: Tue, 13 Sep 2005 19:17:09 -0700
Message-ID: <044B81DE141D7443BCE91E8F44B3C1E288E43C@exsvl02.hq.netapp.com>
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Cc: <nfs@lists.sourceforge.net>
To: <stefan.wuerthner@uni-tuebingen.de>
Sender: nfs-admin@lists.sourceforge.net
Errors-To: nfs-admin@lists.sourceforge.net

don't use the "soft" option -- use "hard" instead.  "soft" with "udp" is
a sure recipe for data corruption and the very symptoms you describe
below.=20

> -----Original Message-----
> From: Stefan Wuerthner [mailto:trash.wuerthner@gmx.de]=20
> Sent: Tuesday, September 13, 2005 8:02 PM
> To: nfs@lists.sourceforge.net
> Subject: [NFS] Sporadic timeout problems during streaming to=20
> nfs server
>=20
> - I have the following setup:
>=20
> DBox (DVB-C receiver, 10BaseT) connected to
> 100MBit-Switch connected over 10m TP to
> 100MBit-Switch connected over 5m TP to
> Netwinder (Linux server, 100BaseT)
>=20
> - Export options on the Netwinder (Kernel 2.4.19-rmk7-nw1):
>=20
> dbox2(rw,insecure,all_squash)
>=20
> - Mount options on the DBox (Kernel 2.4.31-dbox2) to stream=20
> the DVB-TS:
>=20
> rw,soft,udp,nolock,rsize=3D8192,wsize=3D8192
>=20
> - This results in:
>=20
> 192.168.24.50:/home/wuerthne on /mnt/filme type nfs =
(rw,v3,rsize=3D8192,
> wsize=3D8192,soft,udp,nolock,addr=3D192.168.24.50)
>=20
>=20
> Unfortunately, I sometimes get a timeout error in the serial=20
> logfile of my
> DBox:
>=20
> [Tue Sep 13 19:15:49 2005]nfs: server 192.168.24.50 not=20
> responding, timed out
> [Tue Sep 13 19:15:49 2005][stream2file]: error in write:=20
> Input/output error
> [Tue Sep 13 19:15:51 2005][stream2file] pthreads exit code: 4294967293
> [Tue Sep 13 19:15:56 2005][neutrino.cpp] executing=20
> /var/tuxbox/config/recording.start.
> [Tue Sep 13 19:15:57 2005]Record channel_id: 44d00016dcd epg:=20
> 44d00016dcda60c, apids  mode 1
> [Tue Sep 13 19:46:43 2005]nfs: server 192.168.24.50 not=20
> responding, timed out
> [Tue Sep 13 19:46:43 2005][stream2file]: error in write:=20
> Input/output error
> [Tue Sep 13 19:46:44 2005][stream2file] pthreads exit code: 4294967293
> [Tue Sep 13 19:46:49 2005][neutrino.cpp] executing=20
> /var/tuxbox/config/recording.start.
>=20
> E.g. the client recognizes a timeout and restarts the recording. This
> results in two ore more fragments which is not desirable.
>=20
> For some time now, I played with different NFS options,=20
> changed switches and
> so on but to no avail. Sometimes I can stream 5GB without problems,
> sometimes the timeout occurs after a short period of time.
>=20
>=20
> Any ideas what I can change or how I can diagnose this=20
> problem further to
> avoid the timeouts?
>=20
>=20
> Stefan
>=20
> --=20
> --------------------------------------------------------------
> ---------------
> Stefan Wuerthner                             web =20
> http://wuerthner.dyndns.org
> --------------------------------------------------------------
> ---------------
>=20
>=20
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>=20


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