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Re: Trouble with Ethernet & NFS (SlugOS unstable)

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  • Thomas Reitmayr
    Hi again, some time ago I reported problems using NFS which look similar to what people saw using Krzysztof s new ethernet driver back when it was introduced.
    Message 1 of 1 , Feb 13, 2008
      Hi again,
      some time ago I reported problems using NFS which look similar to what people saw using Krzysztof's new ethernet driver back when it was introduced. Now I did a clean build of SlugOS/BE 4.9 alpha (without any EABI hack), and I get the same errors using NFS.

      Test 1: Pull a large file from the slug to the PC -> no errors
            (this was giving me errors with kernel, will do more testing)

      Test 2: Write many files (~0.1 - 10 MB each) to the slug -> error for ~7% of the files:
            Slug reports: "nfsd: non-standard errno: -14" multiple times

      My configuration:

      * exportfs (on Slug) contains:
        which is located on an ext2-formated HD

      * kernel modules (on slug)
        kernel-module-nfs - 2.6.24+svnr1039-r1 - nfs kernel module
        kernel-module-nfsd - 2.6.24+svnr1039-r1 - nfsd kernel module

      * fstab (on PC) contains:
        nslu2:/media/usb_main/public  /mnt/nslu2_public nfs  noauto,user,rw,async,rsize=32768,wsize=32768,nfsvers=3   0 0

      * WRT54GL sitting between PC and slug, all wired Ethernet.

      I will continue testing with other buffer sizes (rsize/wsize), tcp vs. udp, other file sizes, maybe Samba etc.. Still I wonder if I am the only one experiencing these problems with SlugOS/BE 4.9 alpha.

      ----- Ursprüngliche Mail ----
      Von: Mike (mwester) <mwester@...>
      An: nslu2-linux@yahoogroups.com
      Gesendet: Sonntag, den 27. Januar 2008, 19:40:23 Uhr
      Betreff: Re: [nslu2-linux] Trouble with Ethernet & NFS (SlugOS/LE unstable)

      Thanks - that'll help me setup to replicate this problem.  (In case anyone
      is interested in the gory details, SlugOS 3.10 used the proprietary Intel
      driver; SlugOS 4.8 uses an open-source driver that was never submitted
      upstream.  The latest "unstable" SlugOS versions (4.9 and beyond) use the
      2.6.23 kernel and a newer open-source driver (Krzysztof's) that has been
      submitted upstream (but is not yet in its final form)).

      Mike (mwester)

      ----- Original Message -----
      From: "Thomas Reitmayr" <treitmayr@...>
      To: <nslu2-linux@yahoogroups.com>
      Sent: Sunday, January 27, 2008 12:23 PM
      Subject: Re: [nslu2-linux] Trouble with Ethernet & NFS (SlugOS/LE unstable)

      I am referring to the driver that right now is used for SlugOS unstable,
      which at least untill a few hours ago used
      openembedded/packages/linux/linux-ixp4xx_2.6.23.14.bb to build (the time I
      compile it).
      From looking at the bb-file's contents, the driver patch is taken from

      The file
      tells me it is Krzysztof's driver, not sure if he wrote more than one
      driver, though.

      ipkg list_installed | grep nfs
      kernel-module-nfs - - nfs kernel module
      kernel-module-nfsd - - nfsd kernel module
      nfs-utils - 1.0.6-r13 - userspace utilities for kernel nfs

      Previously I mostly used the kernel from SlugOS 3.10, which uses the
      proprietary driver. So I cannot say if this is just an issue with

      The NFS export options (in /etc/exports) are


      ----- Ursprüngliche Mail ----
      Von: Mike (mwester) <mwester@...>
      An: nslu2-linux@yahoogroups.com
      Gesendet: Sonntag, den 27. Januar 2008, 18:28:10 Uhr
      Betreff: Re: [nslu2-linux] Trouble with Ethernet & NFS (SlugOS/LE unstable)

                  Can you clarify what previous version you refer to?

      There have been three drivers in SlugOS, hence a bit more precision is

      helpful to understand the issue.


      Mike (mwester)

      ----- Original Message -----

      From: "Thomas Reitmayr" <treitmayr@yahoo. com>

      To: <nslu2-linux@ yahoogroups. com>

      Sent: Sunday, January 27, 2008 10:36 AM

      Subject: [nslu2-linux] Trouble with Ethernet & NFS (SlugOS/LE unstable)


      I just compiled SlugOS/LE "unstable" (kenel version with EABI and

      installed it on my slug. The basic features work fine, however NFS shows

      network problems very similar to what I found on the net and what was caused

      by the (back then) somewhat flaky new ethernet driver. Some log entries from

      reading a file from the slug:

      <5>nfsd: recvfrom returned errno 14

      <5>nfsd: recvfrom returned errno 14

      <5>nfsd: recvfrom returned errno 14

      <5>rpc-srv/tcp: nfsd: sent only 2896 when sending 8324 bytes - shutting down


      Similar messages (mostly with "errno -14") appear when writing files to the


      In order to get a hint where to continue hunting down the problem - does the

      bug in the ethernet driver still exist? And if yes, is there a place where

      it is tracked (which I have not found)?



      PS: Otherwise EABI works really nice, encoding time for an audio file using

      speexenc dropped from 10.36 s to 1.48 s - a factor of 7!


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