Re: [Xen-users] Anyone able to NFS boot on xen 4.x ?

[Bruce Edge <bruce.edge@xxxxxxxxx>]

Felix,
Thanks for the info.

I assume form the
     > kernel     = "/mnt/public/xen/linux-rescue"
line that you are using a pv domU.

Can one NFS boot an hvm system?

-Bruce



On Fri, May 28, 2010 at 10:13 AM, Felix Kuperjans
<felix@xxxxxxxxxxxxxxxxxx> wrote:
> I am using NFS root filesystem for many of my domUs on XEN 4.0.0 for
> rescue systems.
>
> It's just as it should be:
>
> domu.cfg:
>
> # General information:
> name       = "Rescue"
> memory     = 2048
> vcpus      = 4
>
> # Boot configuration:
> kernel     = "/mnt/public/xen/linux-rescue"
> root       = "/dev/nfs"
> nfs_root   = "/mnt/rescue"
>
> # Additional configuration:
> nographic  = "yes"
> timer_mode = 1
>
> # Kernel network configuration:
> interface  = "eth0"
> ip         = "10.157.0.1"
> netmask    = "255.252.0.0"
> gateway    = "10.156.0.1"
> hostname   = "rescue.domain"
> nfs_server = "10.156.0.1"
>
> # Network interfaces:
> vif        = [ "mac=00:16:3e:9d:00:01,vifname=vif-rescue" ]
>
> # Virtual disks:
> disk       = [ ]
>
>
> Some things you need to do:
>
> 1. Root filesystem over NFS support in the domU kernel
> 2. NFS export on Dom0 ro or rw and only IP-based authentification
> 3. Use NFSv3; NFSv4 has no root-fs support without an initrd and many
> extra settings.
> 4. Network settings must be correct at boot time (kernel level
> autoconfiguration), so have to adopt my settings to your network setup
> (mine is routing with internal IPs, NAT and much firewalling, far away
> from default bridging)
>
> Regards,
> Felix Kuperjans
>
> Am 28.05.2010 18:50, schrieb Bruce Edge:
>> Has anyone been able to get domU NFS boots working with any version of
>> Xen 4.x? If so, can you please post your config? Both the dom0 Xen
>> version & kernel, as well as the domU config file.
>>
>> I've spent a lot of time running through all the docs, HOWTO's and
>> published configs and assorted patches for Ubuntu 9x-10x and Xen 4x
>> trying NFS booting with each. I'm not going to document all the
>> failure modes here as I've already posted most to the xen-devel list.
>>
>> I'm starting to think that it plain doesn't work with Xen 4. Does
>> anyone else use this?
>>
>> Thanks in advance.
>>
>> -Bruce
>>
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>>
>>
>
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