On Fri, 2004-11-05 at 07:14, Ben Hutchings wrote: > Derek "The Monkey" Wueppelmann wrote: > > Hello All, > > > > I'm currently running debian 3.0 r3 and have run into an interesting > > issue with my NFS mounts. On one of my debian systems (I have just done > > an apt-get update/upgrade on all my systems) when copying or creating a > > file on one of the NFS mounted directories I get an input/output error. > > The interesting thing is that this only happens for a file size of > > between 4833-4840 inclusive or any multiple of 8192 + 4833-4840. My > > mount point has been setup in fstab with the following options: > > > > rw,auto,soft,rsize=8192,wsize=8192 > > > > Another interesting thing is that if I go to another of my debian > > systems that is running the exact same version of mount and nfs the copy > > works just fine. I am incredibly perplexed as to why this is happening, > > if anybody could shed some light on this that would be great. > <snip> > > Perhaps it's something to do with IP fragmentation? That works on > 64-bit (8-byte) units so if there's some kind of bug in fragment > reassembly somewhere along the route then it might well affect fragments > in an 8-byte range of sizes. See if the problem goes away if you reduce > the sizes to 1024, which should prevent fragmentation. (This is bad for > performance so it's not a good solution, but it might help to identify > the source of the problem.) I know this is an old thread now, but I finally got a chance to try out the above. And while I was very hopeful in that it might work it still ended up with the same results. I don't know about everybody else but I am thoroughly puzzled by this. -- o) Derek Wueppelmann (o (D . monkey@monkeynet.ca D). ((` http://www.monkeynet.ca/ ( ) `
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