Hello,
I'm investigating using debian-live to provide a "rescue"
environment running under Xen, with an NFS root. I'd rather not use
PXE and DHCP to configure the network of the client, because I
already have all the network settings of the client to hand.
I'm getting stuck at the client's network configuration stage
though, and it may be the case that debian-live doesn't support this.
Here's what I've tried so far.
I built a netboot binary image on squeeze:
$ cat auto/config
#!/bin/sh
lb config noauto \
--architecture "i386" \
--binary-images "net" \
--linux-flavours "686-bigmem" \
--packages-lists "rescue" \
--hostname "rescue" \
--net-root-path "/srv/rescue" \
--net-root-server "192.168.80.243" \
--verbose \
"${@}"
Resulting binary-net.tar.gz unpacked to /srv/rescue, set up my
nfs-kernel-server, confirmed that /srv/rescue can be mounted from another
machine.
I copied the kernel and initrd out of the tftpboot/ directory onto
the dom0 so Xen can boot it.
On a test client, the Xen domU configuration looks a bit like this:
memory = 512
name = 'test1'
vif = [ 'mac=00:16:5e:00:00:51, ip=192.168.83.104,
vifname=v-test1' ]
disk = [ "phy:vg/test1_xvda,xvda,w",
"phy:vg/test1_xvdb,xvdb,w" ]
kernel = '/boot/vmlinuz-2.6.32-5-686-bigmem-rescue'
ramdisk = '/boot/initrd.img-2.6.32-5-686-bigmem-rescue'
extra = 'root=/dev/nfs
ip=192.168.83.104::192.168.80.1:255.255.248.0:rescue:eth0:none boot=live
nfsroot=192.168.80.243:/srv/rescue,tcp'
On booting that, it initially seems fairly normal, but it always
reaches this point before getting stuck:
[ 0.340547] Initialising Xen virtual ethernet driver.
Begin: Loading essential drivers ... [ 0.510610] device-mapper: uevent:
version 1.0.3
[ 0.511702] device-mapper: ioctl: 4.15.0-ioctl (2009-04-01) initialised:
dm-de...@redhat.com
done.
Begin: Running /scripts/init-premount ... done.
Begin: Mounting root file system ... Begin: Running /scripts/live-premount
... [ 0.597730] Uniform Multi-Platform E-IDE driver
[ 0.599256] ide_generic: please use "probe_mask=0x3f" module parameter
for probing all legacy ISA IDE ports
[ 0.599346] ide_generic: I/O resource 0x1F0-0x1F7 not free.
[ 0.599360] ide_generic: I/O resource 0x170-0x177 not free.
Waiting for ethernet card(s) up... If this fails, maybe the ethernet card
is not supported by the kernel 2.6.32-5-686-bigmem?
FATAL: Error inserting ide_generic
(/lib/modules/2.6.32-5-686-bigmem/kernel/drivers/ide/ide-generic.ko): Device or
resource busy
done.
IP-Config: eth0 hardware address 00:16:5e:00:00:51 mtu 1500 DHCP RARP
Now, I've booted Xen domUs with NFS root before, and normally at
this point it picks up the network settings from the ip= part and
carries on. I can't get debian-live to do that.
Do I need to do this another way, or is it simply not supported?
Cheers,
Andy
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