RE: [Xen-users] Re: DomU guest - resize disk on LVM?

["HAWKER, Dan" <dan.hawker@xxxxxxxxxxxxxxxx>]

> Is it possible to do this at install time?

As Steve mentioned, it depends, but there should be a way, its just how
automated and hassle-free it ends up being :)

> 
> For example, I currently kickstart install my xen guests as follows:
> 
> xenguest-install.py --name=guest1 
> --file=/dev/vg01/lv_guest1_vm --ram=384 
> --location=http://mirrors.kernel.org/fedora/core/5/i386/os/
> --extra-args="ip=192.168.23.229 netmask=255.255.255.248 
> gateway=192.168.23.225 dns=192.168.2.203,192.168.2.204 
> ks=http://dev.robinbowes.com/kickstart/misc/guest1-fc5.cfg";
> 
> The disk layout is defined in the kickstart config.
> 
> But I'd need to specify that /dev/vg01/lv_guest1_root = 
> /dev/sda1, /dev/vg01/lv_guest1_usr = /dev/sda2, etc.
> 
> Is this possible with xenguest-install.py or do I need to use 
> a different install method?

Although I use FC4/5, like Steve, I don't personally use xenguest-install.py
either. However am pretty sure kickstart can do these kinds of things. By
default, it maps things out *fresh* but IIRC the *partition* argument in a
kickstart file can be told to use an existing partition/disk, which coupled
with your kickstart layout, should make it work.

Eg partition /var --onpart=/dev/sda2     or something like that.

Your only problem will be automating the creation of the xen config script,
which is part of what the xenguest-install.py does. I presume with some
hacking it could be made to work (by someone with better than my
non-existent Python skills :).

Just a thought, does the --file really *mean* a file, or is it just a string
that is parsed by xenguest-install.py and fed into the DomU config file???
If the latter, could you simply use --file="[
'phy:/dev/vg01/lv_guest1_root,sda1,w'.....]" or similar. Maybe the
*extra-args* parameter can have disk=[ 'phy:/.....] as an argument... Hmmm.

Good luck :)

Dan
--

Dan Hawker
Linux System Administrator
Astrium

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