Xen mounting another lv in guests

[Bei]

Following this guide:
http://www.howtoforge.com/virtualization-with-xen-on-debian-lenny-amd64

I had a simple question.

I used the lvm option as i see great potential here.

I have successfully create 3 guest O/S'es

Guest 1 - Samba / PDC
Guest 2 - Zimbra Mail Server
Guest 3 - Apache php / mysql server

What I would like to make the base lvm for all the guests as small as i need for the basic systems.

Is it possible to make a lv on the hosts and mount it in the guests for more flexibility on disk space?

for example Guest 1 has its base setup with 5G lv mounted in the guest as /,
I would like to create a new lv on the host that is say 200G and mount that in Guest 1 in /home/shares.

[atjensen11]

If I understand you correctly, you are wanting to pass another disk device to your DomU. I have done this a few times in Ubuntu 8.04.

In my DomU config file, I add another device line such as:


disk = [
'phy:/dev/host/vm.example.com-swap,xvda1,w',
'phy:/dev/host/vm.example.com-disk,xvda2,w',
'phy:/dev/host/vm.example.com-home,xvda3,w',
]


Restart the DomU and then within the DomU virtual machine, edit the fstab file.


# /etc/fstab: static file system information.
#
# <file system> <mount point> <type> <options> <dump> <pass>
proc /proc proc defaults 0 0
/dev/xvda1 none swap sw 0 0
/dev/xvda2 / ext3 noatime,nodiratime,errors=remount-ro 0 1
/dev/xvda3 /home/files ntfs-3g defaults 0 0


In my case, the third entry is the extra device we passed and is an NTFS partition for my file server.

Then just issue a "mount -a" command at the command prompt and you should see your new partition mounted where you specified.

[Bei]

Thank you that is exactly what I was looking for. :)