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Date:      27 Jul 2006 21:47:42 +0200
From:      "Arno J. Klaassen" <arno@heho.snv.jussieu.fr>
To:        freebsd-stable@freebsd.org
Cc:        wpaul@windriver.com
Subject:   nfs-client reveals MFC-if_re-probs (or vice-versa) ?
Message-ID:  <wpr706q17l.fsf@heho.labo>

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Hello,

I have a curious problem which at first sight seems related to the
end-June MFC of if_re :

 - I 'mount -o nfsv3,intr,noconn,-r=32768,-w=32768
   <-stable-server>:/files/bsd /files/bsd '

 - (/usr/ports and /usr/src are symlinks to /files/bsd/*) quickly
   after a portinstall/portversion etc. I get : 
    nfs server <-stable-server>: not responding
    (and the corresponding process stuck in 'bo_wwa' according to
    top(1) )

 - though I still can 'ping <-stable-server>' and even 'ssh
   me@<-stable-server-IP>'

 - <-stable-server> works ok with two other -stable clients (using
   if_bge) and all are compiled from the very same source-base (and
   <-stable-server> works fine as well with a linux-client) which
   seems to exclude nfsd-probs

 - a kernel from June the 11th works ok

 - downgrading if_re.c to revision 1.46.2.14 and if_rlreg.h to
   revision 1.51.2.3 makes the problem disappear

 - this is on my demo-notebook, I can test network stuff without much
   limitations; I just use nfs on it for upgrading world and ports.
   NB, same behaviour on amd64-stable and i386-stable (multi-boot same
   hardware)

I can fill a PR if requested or feel free to contact me for further
testing.

Best regards,

Arno


PS: relevant pciconf info :

re0@pci0:8:0:   class=0x020000 card=0x47011558 chip=0x816910ec rev=0x10 hdr=0x00
    vendor   = 'Realtek Semiconductor'
    device   = 'RTL8169 Gigabit Ethernet Adapter'
    class    = network
    subclass = ethernet

otherwise standard kernel conf with stripped unneeded drivers and
extra :

device cpufreq
device atapicam
device sound
options TCP_DROP_SYNFIN (hint??)

-- 

  Arno J. Klaassen

  SCITO S.A.
  8 rue des Haies
  F-75020 Paris, France
  http://scito.com




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