Diskless boot swap space (or swap over NFS)
K Anderson
freebsduser at comcast.net
Thu Aug 7 01:57:44 PDT 2003
K Anderson wrote:
> I am trying to create swap space for diskless bootted systems but it
> doesn't seem to be working out.
>
> Before the kernel panics the system reports reports
> subnet mask 255.255.0 router 192.168.100.105 rootfs
> 192.168.100.105:/diskless_root swapfs
> 192.168.100.105:/conf/192.168.100.201/swap.192.168.100.201 swapsize
> 64000 KB hostname flip.
>
> When booting the kernel panics with
> panic: nfs_boot: mountd swap, error=72
>
> The NFS export looks like this
> /diskless_root -alldirs -ro -network 192.168.100
> /usr -alldirs -maproot=0 -network 192.168.100
>
> Disk slices are reported as
> /dev/ad0s1a 504M 172M 292M 37% /
> /dev/ad0s1g 504M 12M 452M 3% /tmp
> /dev/ad0s1h 36G 7.1G 26G 22% /usr
> /dev/ad0s1f 504M 41M 423M 9% /var
> /dev/ad3s1 3.9G 2.9G 739M 80% /mouse
> /dev/ad2s1e 3.9G 138M 3.5G 4% /diskless_root
> procfs 4.0K 4.0K 0B 100% /proc
> linprocfs 4.0K 4.0K 0B 100% /usr/compat/linux/proc
>
> Anybody have any ideas on correcting this?
>
> TIA
>
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Oh, I'm using isc's dhcpd to do all this. I made a modification to the
dhcpd.conf and things have changed.
swapfs
192.168.100.105:/diskless_root/conf/192.168.100.201/swap.192.168.100.201
swapsize 64000 KB hostname flip
Now the kernel panics with:
panic: nfs_boot: lookup swap, error=2
Who writes these error messages? Sheeesh. But that's not the problem,
I've googled and the only thing I come up with is something back from
the last millenium that says to change some file then recompile.
Has anybody else gotten swap to work over nfs with disless booting and
if so how did you overcome the problem?
The computer doing the diskless booting has 32 meg of ram.
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