[Xen-users] Trouble booting domU over NFS

["Nick Couchman" <Nick.Couchman@xxxxxxxxx>]

I'm attempting to boot a domU with a NFS Root filesystem.  I've configured by 
domU with a network interface, the DHCP option set correctly, and the necessary 
nfs root options.  The domU is supposed to run openSuSE 11.3.  I've also used 
mkinitrd to generate the necessary initrd image with xennet, nfs, etc., and 
have this configured correctly in my domU configuration.  However, every time I 
try to boot it, it seems to just hang.  Here is the last of the output:

[    0.271143] rtc_cmos rtc_cmos: rtc core: registered rtc_cmos as rtc0
[    0.271369] TCP cubic registered
[    0.271510] NET: Registered protocol family 10
[    0.271876] lo: Disabled Privacy Extensions
[    0.272102] registered taskstats version 1
[    0.272135] PCI IO multiplexer device installed.
[    0.272147]   Magic number: 1:252:3141
[    0.272158] XENBUS: Device with no driver: device/vif/0
[    0.272163] 
/usr/src/packages/BUILD/kernel-xen-2.6.34.4/linux-2.6.34/drivers/rtc/hctosys.c: 
unable to open rtc device (rtc0)
[   12.824902] Freeing unused kernel memory: 352k freed
[   12.825043] Write protecting the kernel read-only data: 7104k
[   12.863444] netfront: Initialising virtual ethernet driver.
[   12.971358] udev: starting version 157
[   13.052730] NET: Registered protocol family 17
[   14.172028] RPC: Registered udp transport module.
[   14.172035] RPC: Registered tcp transport module.
[   14.172043] RPC: Registered tcp NFSv4.1 backchannel transport module.
[   14.177726] Slow work thread pool: Starting up
[   14.177851] Slow work thread pool: Ready
[   14.177911] FS-Cache: Loaded
[   14.188728] FS-Cache: Netfs 'nfs' registered for caching

So, it looks like xennet loads correctly, and, in fact, looking at my DHCP 
server logs, I see that the domU picks up an IP address.  However, this is as 
far as it gets - it never contacts the NFS server, and there's no further 
output on the console.  Any hints would be greatly appreciated - I've tried 
increasing verbosity of the boot process, doing TCP dumps, etc., but I'm not 
able to figure out what the domU is attempting to do and what's holding up the 
boot process.

Thanks,
Nick



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