Date: Sat, 19 Aug 2006 16:15:19 -0400 From: Kris Kennaway <kris@obsecurity.org> To: Geoffroy Desvernay <dgeo@egim-mrs.fr> Cc: freebsd-bugs@FreeBSD.org Subject: Re: kern/97686: [nfs] massive NFS server performance break under "options QUOTA" Message-ID: <20060819201519.GD36605@xor.obsecurity.org> In-Reply-To: <200607311700.k6VH0fqV087593@freefall.freebsd.org> References: <200607311700.k6VH0fqV087593@freefall.freebsd.org>
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On Mon, Jul 31, 2006 at 05:00:41PM +0000, Geoffroy Desvernay wrote:
> We now have a stable machine without QUOTA *and* INET6.
> (only without QUOTA the machine died 24hours later). We left rpc.lockd
> running.
> =20
> Here is a simple zsh script to make it crash when with QUOTA-enabled
> kernel (use $(seq 1 50) or ? with another shell). launch it on a client
> and see 'top' on the server... I'm not kernel (nor nfs) hacker, but I
> may try some patches if it can help.
> =20
> mount options:
> /dev/da0s1g on /u (ufs, NFS exported, local, with quotas, soft-updates,
> acls, fsid e0bf4c447f5cf8a5)
> =20
> ---------------- crashlocks.zsh
> #!/usr/local/bin/zsh -x
> for i in {1..50} ; do
> lockfile truc$i &
> done
> ----------------
> =20
> Hope this can help...
Please provide the details of the panic, per the chapter on kernel
debugging in the developers handbook.
If it's not panicking but deadlocking, update to 6.1-STABLE where this
bug is believed to be fixed.
Thanks,
Kris
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