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[Xen-users] DomU image file on NFS Storage

  • To: Xen Users List <xen-users@xxxxxxxxxxxxxxxxxxx>
  • From: Antonio Colin <dftonywhite@xxxxxxxxxxx>
  • Date: Sat, 8 Oct 2011 00:02:46 -0500
  • Delivery-date: Fri, 07 Oct 2011 22:05:32 -0700
  • Importance: Normal
  • List-id: Xen user discussion <xen-users.lists.xensource.com>

Hi everyone,

I have created a CentOS4 PV on a Xen host contained in a *.img file. Now I want to store that image file
on a NFS server. Does anyone have a config.sxp file example and want to share it on a pastebin service?

I have put the *.img on an NFS server, then mounted the img using #mount -o loop image.img /mnt/centos
and then exported it to the xen host but it does not work since the DomU kernel does not have Root NFS support.

How can I do instead to read directly from the xen host the *.img file stored in the NFS server, I think it would
look like: nfs_root = "/mnt/images/centos/image.img".

** This does not work at all, it ends up with a kernel panic on console.

kernel = "/mnt/images/centos/boot/vmlinuz-2.6.9-89.ELxenU"
ramdisk = "/mnt/images/centos/boot/initrd-2.6.9-89.ELxenU.img"
memory = 512
name = "centos4"
vcpus = 1
vif = ['']
dhcp = "dhcp"
ip = ""
netmask  = ""
gateway  = ""
hostname = "centos4"
nfs_root = "/mnt/images/centos/"
nfs_server = ""
root = "/dev/root"
on_reboot   = 'restart'
on_crash    = 'restart'

I would really appreciate one example or config option.

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