Date: Tue, 16 Oct 2007 10:22:52 -1000 From: Clifton Royston <cliftonr@lava.net> To: "Chris H." <chris#@1command.com> Cc: freebsd-stable@freebsd.org Subject: Re: Reproducable, possibly NFS related, fatal double fault in 6.2-R-p7 Message-ID: <20071016202251.GC4047@lava.net> In-Reply-To: <20071016130146.pfyan4vs5cwgsoc0@webmail.1command.com> References: <20071004165755.GA1049@pp.htv.fi> <47120D83.1010703@FreeBSD.org> <20071015203202.GA17964@pp.htv.fi> <20071016004637.GA79351@cdnetworks.co.kr> <20071016185714.GB2186@pp.htv.fi> <20071016130146.pfyan4vs5cwgsoc0@webmail.1command.com>
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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@iandicomputing.com / cliftonr@lava.net
President - I and I Computing * http://www.iandicomputing.com/
Custom programming, network design, systems and network consulting services
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