Re: [Xen-users] how to create a vm from a file system

[Joel Nylund <jnylund@xxxxxxxxx>]

Thanks Ian,

I used your example and I get this message now:


[root@keepup1 vms]# xm create -c jnew vmid=1
Using config file "./jnew".
Error: Device 769 (vbd) could not be connected.
Device /root/vms/jnylund2 is mounted in the privileged domain,
and so cannot be mounted by a guest.

My conf file is:

[root@keepup1 vms]# cat jnew
# -*- mode: python; -*-
kernel = "/boot/vmlinuz-2.6.20-1.3002.fc6xen"
memory = 512
name = "jnylund2"
vif = ['bridge=xenbr0' ]
disk = ['phy:/root/vms/jnylund2,hda1,w','phy:/root/vms/j2swap,sda2,w']
ip="*.*.*.*"
netmask="255.255.255.0"
gateway="*.*.*.*"
hostname = "test2.domain.com"
root = "/dev/hda1 ro"
extra = "3"

any ideas?

thanks
Joel


On Feb 14, 2008, at 3:52 PM, Ian Tobin wrote:

> Hello,
>
> Here is a sample working config file using LVM, I have swapped out  
> some
> of it for made up names to keep it private,i hope this helps
>
> # -*- mode: python; -*-
> kernel = "/boot/vmlinuz-2.6.12-xenU"
> memory = 64
> name = "hostname"
> vif = ['bridge=xenbr0' ]
> disk = ['phy:/dev/XEN/disk,hda1,w','phy:/dev/XEN/diskswap,sda2,w']
> ip="*.*.*.*"
> netmask="255.255.255.0"
> gateway="*.*.*.*"
> hostname = "hostname.domain.com"
> root = "/dev/hda1 ro"
> extra = "3"
>
> -----Original Message-----
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Joel  
> Nylund
> Sent: 14 February 2008 18:40
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: Re: [Xen-users] how to create a vm from a file system
>
> Hi, I have looked through the manual now, but I still dont get it.
>
> Lets say I have a standard fedora setup running xen kernel & xen
>
> I have a the filesystem I want the vm to use (files given to me from a
> previously used vm ) starting with its root starting at (/root/vms/
> jnylund2)
>
> My hard drive devices are:
>  Device Boot      Start         End      Blocks   Id  System
> /dev/sda1   *           1          13      104391   83  Linux
> /dev/sda2              14       30401   244091610   8e  Linux LVM
>
> I created a config file with the following:
>
> # Kernel image file.
> kernel = "vmlinuz-2.6.20-1.3002.fc6xen"
> memory =512
> name = "jnylund2"
> vif = [ '' ]
> disk = [ 'phy:sda2,sda2,w' ]
> dhcp="dhcp"
> hostname= "vm%d" % vmid
> #root = "/root/vms/jnylund2"
> root = "/dev/sda1 ro"
> #extra = "4"
>
> When I try to run:
> [root@mymachine vms]# xm create -c j2-conf vmid=1
> Using config file "./j2-conf".
> Error: int argument required
>
> It doesn't work, and I also dont understand where im supposed to tell
> it to use /root/vms/jnylund2 as the root of the virtual machines file
> system.
>
> thanks
> Joel
>
>
>
>
> On Feb 13, 2008, at 6:41 PM, Nico Kadel-Garcia wrote:
>
> > weiming wrote:
> > > just untar to a partition or virtual file system.
> > > It is covered in the xen manual
> > >
> > > weiming
> > Oh, wait. You have to build the file system first, edit /etc/mtab
> > and /etc/fstab appropriately, make sure your kernel has the
> > appropriate modules to access the Xen virtual hardware for network
> > and hard drive controllers, and be prepared to reset all your
> > SELinux settings.
> >
> > It's not as easy as many manuals make it out to be. It's often
> > easiest to actually delete the kernel, and do a Fedora upgrade or
> > install on top of the existing OS with the virt-install tool.
> >
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-users
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users


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