Sorry about that. The OEM system is a set top box device running embedded linux w/ kernel 2.4.25. Paul C. > -----Original Message----- > From: fedora-list-bounces@xxxxxxxxxx [mailto:fedora-list- > bounces@xxxxxxxxxx] On Behalf Of Rick Stevens > Sent: Monday, April 11, 2005 4:36 PM > To: For users of Fedora Core releases > Subject: Re: Strange nfs problem > > Paul Crossman wrote: > > I have a customer with a rather strange NFS problem that I'm just plain > > stmped on and I'm hoping that someone might have some enlightening > ideas. > > > > Assume the following small network diagram: > > > > > > OEM System (a) > > / \ > > / \ > > / \ > > / \ > > /------------\ > > Fedora RedHat > > Core 2 9 > > (b) (c) > > > > The following NFS scenarios are currently working: > > > > NFS Servers are running on B and C. > > > > File on C, read from A > > Write from A to either B or C > > Read and write between B and C. > > File on B, read from A is causing problems. > > > > > > The goal is to run software on A from an NFS mounted filesystem on B. > > > > When that transfer is attempted the following has been seen > > - The command line hangs and will unlock at the unexport of the NFS > > Filesystem. > > - The data transfer always results in a file that is exactly 44KB in > > Size (45056 bytes) > > - Smaller files transfer just fine. > > - Files larger than 44KB transfer file; only if they are larger than > > some (unknown) upper limit do they block after 44KB. > > - Files are 120KB sometimes work, and sometimes block. > > > > Does anyone know what might cause this? > > 44K sounds suspiciously like the circular buffer driver problem on some > Intel cards. Make sure the drivers on ALL of your netcards are up to > date. > > You don't say what the OEM system is, so it's hard to say if the problem > is there. If possible, you might try ensuring all of the NFS systems > can handle NFSV3 and if so, try using TCP mounts rather than the default > UDP: > > (on A): mount -t nfs -o tcp B:/export /mountpoint > ---------------------------------------------------------------------- > - Rick Stevens, Senior Systems Engineer rstevens@xxxxxxxxxxxxxxx - > - VitalStream, Inc. http://www.vitalstream.com - > - - > - Jimmie crack corn and I don't care...what kind of lousy attitude - > - is THAT to have, huh? -- Dennis Miller - > ---------------------------------------------------------------------- > > -- > fedora-list mailing list > fedora-list@xxxxxxxxxx > To unsubscribe: http://www.redhat.com/mailman/listinfo/fedora-list
