Re: [Xen-users] creating domU's consumes 100% of system resources

[William Pitcock <nenolod@xxxxxxxxxxxxxxxxxx>]

On Mon, 2008-04-21 at 14:34 -0500, n8&abby wrote:
> Hello,
> 
> I have noticed that when I use xen-create-image to generate an domU,
> the whole server (dom0 and domU's) basically hangs until it is
> finished.  This happens primarily during the creation of the ext3
> filesystem on an LVM partition.
> 
> This creation of the file system can take up to 4 or 5 minutes.   At
> which point, any other domU's are basically paused... tcp connections
> time out.. etc.
> 
> I tried 'xm vcpu-set 0 1' to take the dom0 down to one virtual cpu..
> but this didn't seem to have any affect.
> 
> I don't mind if the generation of new domU's takes 30 minutes, as long
> the performance of my other domU's are not affected greatly.  Any
> hints on how to fix this problem?
> 

How are your disks set up? RAID 0, 1, 5, 10, or 50? What speed disks?

Any number of things could be causing this, but I would check your
storage situation first, as a failing disk could be very problematic.

William

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