Re: [Xen-users] Re: Partition vs disk images

[Nick Anderson <nick@xxxxxxxxxxxx>]

Rob Greene wrote:
> Ok, so the summary seems to be that images are ok for small stuff (and 
> tinkering) but I really want to partition it out (I assume this becomes 
> stronger as the partition grows).  RAID 5 may or may not be a good idea.
Right
> My assumption (correct me here) is that the partition/logical volume I 
> create for the Xen domU looks like a disk?  Then, Xen will partition 
> that disk out -- and I will create swap, /boot, /, etc partitions.
Xen doesn't do any partitioning. I suppose it would be possible to 
create a LV and then partition that block device up more (like you would 
a hard drive) but I think it is more common to create an LV for each 
partition you need and just attach it to the Xen vm in the xen config.
> Now, to continue on the beginner topics.  Using my existing RAID volume 
> + LVM, I created a logical volume for a file server. I've specified it as:
> disk = [ "phy:lvm-raid/FileVolGroup,sda1,w" ]
>
> But, apparantly the installer doesn't see it?  What am I missing?  I've 
> tried it as /dev/lvm-raid/FileVolGroup.  I can mount it in dom0 (and 
> then umount it of course).  I saw a description where they formatted it, 
> so I tried that and it still isn't seen.  Do I need to go at it via the 
> /dev/mapper/lvm--raid-FileVolGroup?  Something else?
If you are using a cd based install I think you will have to do HVM for 
the installer to work right. So you might need a line more like
'phy:/dev/xenhost-lvm/winxp,ioemu:hda,w'

thats from my winxp guest but you can change it up for what suites your 
needs.
Of course I could be wrong on that assumption.
--
Nick Anderson <nick@xxxxxxxxxxxx>
http://www.cmdln.org
http://www.anders0n.net

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