Date: 8 Mar 2002 12:56:35 -0000 From: Peter van Dijk <peter@dataloss.nl> To: FreeBSD-gnats-submit@freebsd.org Subject: kern/35669: NFSROOT breaks without a gateway Message-ID: <20020308125635.30142.qmail@useful.dataloss.nl>
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>Number: 35669
>Category: kern
>Synopsis: NFSROOT breaks without a gateway
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Fri Mar 08 05:00:02 PST 2002
>Closed-Date:
>Last-Modified:
>Originator: Peter van Dijk
>Release: FreeBSD 4.5-RELEASE-p1 i386
>Organization:
Business Internet Trends
>Environment:
System: FreeBSD breakfast.primexs.net 4.5-RELEASE-p1 FreeBSD 4.5-RELEASE-p1 #0: Mon Mar 4 14:40:41 CET 2002 root@cheapo.bit.nl:/usr/obj/usr/src/sys/HOSTING i386
isc-dhcp3-3.0.1.r6
>Description:
When using NFSROOT (in combination with pxeboot, in this case), mounting
the root filesystem fails when dhcp has not provided a gateway address,
even if none is needed.
>How-To-Repeat:
A dhcp configuration like:
host egg.primexs.net
{
hardware ethernet 00:02:B3:62:8A:84;
fixed-address 192.168.162.173;
option root-path "/usr/pxeboot/root";
}
with no 'option routers' in any global part. The client then will, when
trying to mount the NFS root, say:
panic: nfs_mountroot: RTM_ADD: 51
>Fix:
Workaround: Provide a 'bogus' gateway entry (I just added
'option routers 192.168.162.1', which worked).
Possible fix: not try to add a route in the NFSROOT code if the gateway
is not set, or ignore any errors and try to mount anyway.
>Release-Note:
>Audit-Trail:
>Unformatted:
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