RE: [Xen-users] Building from Source

[Nathan Eisenberg <nathan@xxxxxxxxxxxxxxxx>]

Jon,

As I mentioned - the disk line seems to have no effect on whether or not the 
DomU boots.  Even with no disk line, I get the same results.  The loop device 
was just a temporary contrivance for testing, but is definitely not the cause 
of the issue.

Thank You,
Nathan Eisenberg
Sr. Systems Administrator
Atlas Networks, LLC


-----Original Message-----
From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx 
[mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of jonr@xxxxxxxxxx
Sent: Friday, October 24, 2008 10:05 AM
To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: RE: [Xen-users] Building from Source

Quoting Nathan Eisenberg <nathan@xxxxxxxxxxxxxxxx>:

> Franz,
>
> Actually, I get even the same results if there is no disk line in   
> the configuration file at all.  :(  Very frustrating.
>
> Thank You,
> Nathan Eisenberg
> Sr. Systems Administrator
> Atlas Networks, LLC
>
Hello Nathan,

Why are you trying to use one of the loop devices for your disk? I  
only ask in case there is a reason. I may be wrong but when you create  
a file based disk for Xen then use that in a domu when you create the  
domu it mounts that file on the loop device. I think what you want to  
do is create a file to use as the disk then reference that file in  
your domu config file.

I usually use lv's as disks but I think to create a file for use as a  
disk would be something like this:

This would create a 4GB "disk"(file).
dd if=/dev/zero of=/vms/vm_disk bs=1M count=1 seek=4095

You would then want to use mkfs.<filesystem> to put a file system on the file.
e.g.
mkfs.ext3 /opt/xendrives/vm_disk

Then in your domu you would use that as the file: device instead of loop0.

On a side note, if you have lv's they are better than file based and  
easier to manage.

Hope that helps,

Jon



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