From owner-freebsd-hackers@FreeBSD.ORG  Wed Mar  7 22:38:46 2007
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From: des@des.no (Dag-Erling =?iso-8859-1?Q?Sm=F8rgrav?=)
To: Mike Meyer <mwm-keyword-freebsdhackers2.e313df@mired.org>
References: <015601c75ce9$d0263a10$b3db87d4@multiplay.co.uk>
	<17896.23312.980989.68558@bhuda.mired.org>
Date: Wed, 07 Mar 2007 23:38:42 +0100
In-Reply-To: <17896.23312.980989.68558@bhuda.mired.org> (Mike Meyer's message
	of "Fri, 2 Mar 2007 12:12:48 -0500")
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Cc: freebsd-hackers@freebsd.org, Steven Hartland <killing@multiplay.co.uk>
Subject: Re: NFS based /usr prevents normal startup due to slow net init
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Mike Meyer <mwm-keyword-freebsdhackers2.e313df@mired.org> writes:
> Steven Hartland <killing@multiplay.co.uk> writes:
> > Another observation from my recent dealings with using
> > NFS based /usr is that the remote critical mounts via
> > nfs dont always give the network enough time to
> > initialise before running. The first error displayed
> > is:
> > Mounting NFS file systems:mount_nfs: nfs1: hostname nor servname provid=
ed, or not known
> > [...]
> How about an extra flag in your fstab?  The default behavior for
> mount_nfs is to keep retrying until the mount succeeds.

No, it will fail immediately (as seen above) if it can't resolve the
server name.  The only way to fix this is to modify mount_nfs to sleep
and retry in such cases.  The *current* sleep-and-retry code is in the
NFS mount code in the kernel, which doesn't come into play until after
DNS lookup.

DES
--=20
Dag-Erling Sm=F8rgrav - des@des.no