Reproducable, possibly NFS related, fatal double fault in 6.2-R-p7

[Clifton Royston]

On Tue, Oct 16, 2007 at 01:01:46PM -0700, Chris H. wrote:
> excerpt from this list titled: NFS == lock && reboot, that I posted follows:
> 
> ------8<---SNIP---8<-----SNIP-----8<-------
> # uname -a
> FreeBSD host.domain.tld 6.2-RELEASE FreeBSD 6.2-RELEASE #0: Fri Jan 26 
> 16:27:14 PST 2007
> 
> Greetings,
> Does anyone know when NFS and friends will be working again? I haven't 
> been able
> to /safely/ use it from 4.8 on. I remember some talk on the list 
> sometime ago and
> then it seemed to be resolved, as the discussion ended. So I thought it was
> fixed. Seems not. :(
> 
> My scenario;
> mount host off root:
> mount script exec'd follows...
> 
> #!/bin/sh -
> mount -t nfs host.domain.tld:/ /host
> mount -t nfs host.domain.tld:/var /host/var
> 
> confirm mount...
> 
> # ls /host
> .snap    COPYRIGHT    bin
> ...
> usr    var    tmp
> 
> OK looks good...
> 
> # cp /path/to/approx/10Mb/file /host/path/to/dest/dir/
> 
> Fatal double fault
> eis 0x0blah
> eiblah blah0x
> panic double fault
> no dump device defined
> rebooting in 15sec...
> 
> Hmmm... that's not good. :(
> 
> ------8<---SNIP---8<-----SNIP-----8<-------
> 
> My final solution was to change the lines in /etc/rc.conf
> from:
> nfs_client_enable="YES"
> nfs_reserved_port_only="YES"
> nfs_server_enable="YES"
> rpc_lockd_enable="YES"
> rpc_statd_enable="YES"
> rpcbind_enable="YES"
> 
> to:
> nfs_client_enable="YES"
> nfs_reserved_port_only="YES"
> nfs_server_enable="YES"
> #rpc_lockd_enable="YES"
> #rpc_statd_enable="YES"
> rpcbind_enable="YES"
> 
> Making those changes ended the "Fatal double fault && reboot in 15 
> seconds..."

  Thanks for this very timely mention!  The cluster of servers I am
about to upgrade from 4.8 <embarrassed cough> to 6.2 relies heavily on
NFS to an old Netapp.  If I have got to disable rpc_lockd and
rpc_statd, it's good to know that now!
 
  Can I ask, can anybody confirm that they're running 6.2 on NFS
successfully *with* lockd and statd?

  -- Clifton

-- 
    Clifton Royston  --  cliftonr at iandicomputing.com / cliftonr at lava.net
       President  - I and I Computing * http://www.iandicomputing.com/
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