On Tue, Feb 08, 2011 at 05:05:20PM +0100, David Steiner wrote:
> On Mon, Feb 7, 2011 at 7:34 PM, Pieter Verberne
> <pieterverbe...@xs4all.nl> wrote:
> > On Sun, 06 Feb 2011 16:02:31 +0100, Pieter Verberne wrote:
> >>
> >> Hello,
> >>
> >> See thread at the bottom. I have also problems reading files while
> >> mounting from Ubuntu. I cannot read files larger than +/- 18KB.
> >>
> >> /etc/exports:
> >> /home/pieter localhost 10.0.0.1 10.0.0.2 10.0.2.15
> >>
> >> On Ubuntu:
> >> $ sudo mount.nfs lilium:/home/pieter pieter_mount/ -w
> >> $ cat pieter_mount/test.txt # 17069 bytes
> >> [ output ]
> >> $ cat pieter_mount/test1.txt # 18483 bytes
> >> [ no output. cat keeps running; `ps aux | grep cat`
> >> pieter 3095 0.0 0.0 3896 244 pts/15 D+ 15:35 0:00 cat
> >> pieter_mount/test1.txt ]
> >>
> >> When I mount the same export on the OpenBSD machine it works fine:
> >> $ sudo mount -t nfs localhost:/home/pieter/ /mount_test/
> >> $ cat /mount_test/test1.txt
> >> [output]
> >>
> >> So could be an Ubuntu (and MacOS?) bug. I don't have another Unix/Linux
> >> computer to try on right now.
> >>
> >> Also, I'm not able to write on the exports. From both Ubuntu and
> >> OpenBSD(localhost).
> >>
> >> $ touch test
> >> touch: cannot touch `test': Read-only file system
> >>
> >> It says Read-only _file system_. Could this have anything to do with
> >> file permissions or the -maproot -allmap options?
> >>
> >> `portmap -d` and `mountd -d` gives no errors. I tried disabling pf. No
> >> result. No interesting things in /var/log/messages
> >
> > Thanks to Jason for a hint. I explicitly have to say to the nfs client
> > to use UDP instead of TCP. It looks like TCP support is broken in some
> > way? It doesn't work with Ubuntu, MacOS and I found out that mounting
> > from a QNAP doesn't work either.
> >
> > And, is there a way to make nfs working with the pf scrub option? I'm
> > using pppoe and have a NAT, see
> >
> > man 4 pppoe
> > Problems can arise on machines with private IPs connecting to the
> > Internet via a machine running both Network Address Translation (NAT) and
> > pppoe.
> >
> > So in my pf.conf is
> > match on $ext_if scrub (max-mss 1280)
> >
> > Is there any way to make nfs working on $ext_if?
> >
> >
>
> FWIW, i'm having some nfs issues too. i have a openbsd file server and
> am mounting on linux. it used to work ok, then in the last couple of
> months it stopped working. on the client, if i do "ls -R" on the mount
> point, it prints out a couple thousand files and then stops printing
> any more. i found mounting with nfs version 2 to be a workaround:
>
> hostname:/data on /mnt/bunny type nfs (rw,vers=2,tcp,addr=192.168.xyz.abc)
Did you try udp v3 mounts? That's the default for a reason.
-Otto
