NFS problem

[Gilboa Davara]

On Wed, 2005-11-30 at 20:43 +0100, Eric Tanguy wrote:
> Le mardi 29 novembre 2005 à 12:40 +0100, Eric TANGUY a écrit :
> > > On Thu, 2005-11-24 at 22:43 +0100, Eric TANGUY wrote:
> > >> I have a fc3 server and fc4 clients. Each client mount 2 nfs directory
> > >> at bootup :
> > >> 192.168.10.10:/home       /home       nfs  exec,dev,suid,rw 1 1
> > >> 192.168.10.10:/usr/local  /usr/local  nfs  exec,dev,suid,ro 1 1
> > >>
> > >> Since today /home is not mounted at boot (but /usr/local is mounted)
> > >> but this seems to be randomly.
> > >
> > > Seems some unusual options.  If I were doing the same thing, mine would
> > > be something like:
> > >
> > > 192.168.10.10:/home       /home       nfs  auto,noexec,nodev,intr,udp
> > > 192.168.10.10:/usr/local  /usr/local  nfs  auto,nodev,intr,udp,ro
> > >
> > > Although the "defaults" set "auto" and "rw", and other things, I like to
> > > see what options I've set.  I have to read the man files to find out
> > > what the defaults are.
> > >
> > > The "exec" and "dev" options would be unusual for home space, if not
> > > actually risky, I can't see why you'd want dev for /usr/local, either.
> > >
> > > And the "1 1" checking options don't seem sensible across a network, let
> > > the machine with the drive do that.  Perhaps they're something to do
> > > with the problems you're having (it not being able to fsck something on
> > > a remote system).
> > >
> > So i put the values you give but it seems to solve nothing :
> > sometimes, at bootup /usr/local is mounted and not /home the only messages
> > related to this in /var/log/messages is :
> > Nov 29 12:32:26 s237-1 rpc.idmapd: nfsdreopen: Opening '' failed: errno 2
> > (No such file or directory)
> > Which indicates nothing to me.
> > 
> > I see also some errors at the shutdown :
> > Nov 29 08:31:22 s237-1 rpc.mountd: Caught signal 15, un-registering and
> > exiting.
> > Nov 29 08:31:26 s237-1 kernel: nfsd: last server has exited
> > Nov 29 08:31:26 s237-1 kernel: nfsd: unexporting all filesystems
> > Nov 29 08:31:27 s237-1 ntpd[2439]: ntpd exiting on signal 15
> > Nov 29 08:31:27 s237-1 kernel: Badness in interruptible_sleep_on_timeout
> > at kernel/sched.c:3403 (Not tainted)
> > Nov 29 08:31:27 s237-1 kernel:  [<c031d2b2>]
> > interruptible_sleep_on_timeout+0xf7/0x114
> > Nov 29 08:31:27 s237-1 kernel:  [<c012b213>] group_send_sig_info+0x59/0x63
> > Nov 29 08:31:27 s237-1 kernel:  [<c011c4de>] default_wake_function+0x0/0xc
> > Nov 29 08:31:27 s237-1 kernel:  [<e02814fb>] lockd_down+0xbe/0x120 [lockd]
> > Nov 29 08:31:27 s237-1 kernel:  [<e03f5cf7>] nfs_kill_super+0x5c/0x5e [nfs]
> > Nov 29 08:31:27 s237-1 kernel:  [<c01699ed>] deactivate_super+0x60/0x71
> > Nov 29 08:31:27 s237-1 kernel:  [<c017eb4e>] sys_umount+0x33/0x73
> > Nov 29 08:31:27 s237-1 kernel:  [<c0179b9a>] dput+0x115/0x26d
> > Nov 29 08:31:27 s237-1 kernel:  [<c0164719>] __fput+0x13d/0x18f
> > Nov 29 08:31:27 s237-1 kernel:  [<c0162ed2>] filp_close+0x3e/0x62
> > Nov 29 08:31:27 s237-1 kernel:  [<c0103985>] sysenter_past_esp+0x56/0x79
> > Nov 29 08:31:29 s237-1 rpc.statd[2110]: Caught signal 15, un-registering
> > and exiting.
> > 
> > But i can't see where the problem come from.
> > Thanks
> > Eric
> > 
> No one could help me with this problem or help me to increase the error 
> messages putting something in debug mode ?
> Thanks
> Eric
> 
> 
> 

I'd suggest you open a bug report about it bugzilla.redhat.com (At least
the oops.) Though I doubt that having interruptible_sleep_on_timeout
called in the wrong context (or so it seems) is the reason for your
problem.
Anyways, did you try mounting the NFS drives using autofs instead of
fstab? You might be dealing with a delayed network start the causes the
main mount to fail.

Gilboa