Re: mount issue with Mac OSX and --manage-gids, client hangs

[Alex Samad <alex-SGFoFqf0RKf0CCvOHzKKcA@public.gmane.org>]

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On Thu, Jul 31, 2008 at 07:11:31PM -0400, Chuck Lever wrote:
> On Thu, Jul 31, 2008 at 4:47 PM, Alex Samad <alex-SGFoFqf0RKf0CCvOHzKKcA@public.gmane.org> wrote:
> > Hi
> >
> > I have a nfs debian amd64 server, with a few linux clients that is
> > working well. I recently tried to attach a mac osx (10.5 Leopard)
> > client.
> >
> > Everytime I attached it would hang when i attempted to use the mount
> >
> > on the nas box I have this line in /etc/exports
> > /exports/shared
> > -async,no_subtree_check,no_root_squash,insecure,mp=/exports/shared
> > 192.168.8.0/22(rw)
> 
> One comment: you shouldn't need "insecure" if you are mounting on the
> command line and not from the Finder's "Go" menu.  The Finder will try
> to mount an NFS share using a non-privleged port, but Darwin's mount
> command (and automounter, AFAIK) works like other Unices -- it should
> try to use a privileged port for communicating with the server.
yes agreed, but I had tried different variations, this was the last one.
In all instances when I removed the manage-gids it failed

> 
> > I mounted with this command
> >
> > mount -t nfs -o rw,async,rsize=32768,wsize=32768
> > nas.hme1.samad.com.au:/exports/shared /mounts/shared
> >
> >
> > I then tried
> >
> > df -h &
> > ls -l /mounts/shared &
> > umount -f /mounts/shared &
> >
> > all the commands failed to return, I could not kill them with -9, I had
> > to reboot
> 
> I find looking at the Mac's dmesg via Console.app to be helpful in such cases.

The commands did not return, kill -9 failed, I had to reboot, noting in
dmesg, console or syslog (sorry I lie, there were server timeouts
messages)

> 
> > I have attached a tcpdump (tcpdump -pni eth0 ether host
> > xx:xx:xx:xx:xx:xx -s 9100 -w
> > nas.capture.dmp) on the nas box
> >
> > a copy of the dumo is at www.samad.com.au/~alex/nas.capture.dmp
> >
> > I tracked it down to --manage-gids - when I remove this from
> > /etc/defaults/nfs-kernel-server everything works fine.
> >
> > Note though, the UID's, GIDs are not synced between the linux box and
> > the mac box. so the 2 users I have on the mac box uid 501 & 502, do not
> > exist on the nas box
> >
> >
> > I read that manage-gids was a means of handle a uid with more than 16
> > gids and it was protocol compliant, so I have opened a bug report with
> > Apple, and opened a bug report with debian
> >
> >
> > I have had a quick look at the source code, but it looks more like
> > something that is in the kernel.
> >
> > Is there another place I can log a bugreport for this ?
> >
> > Thanks
> > Alex
> >
> >
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> 
> 
> 
> -- 
>  "Alright guard, begin the unnecessarily slow-moving dipping mechanism."
> --Dr. Evil
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-- 
Never play pool with anyone named "Fats".

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