Re: [Xen-users] Dom0 on USB Stick

[Jonathan Tripathy <jonnyt@xxxxxxxxxxx>]

On 13/12/2011 22:28, Simon Hobson wrote:
> Jonathan Tripathy wrote:
>
> > I'm currently mulling over the idea of running our Dom0 on a USB 
> > flash disk. Currently, we have the Dom0 and DomU running of the same 
> > disk array. I'd like to know the list's opinion on doing this. It 
> > seems like a very nice idea to split the single critical Dom0 and the 
> > tens of DomUs.
> > I'd like to stop the DomUs from affecting the disk IOPS available for 
> > the Dom0 as I'm sure you'll appreciate the critical nature of the it.
> I'm not sure what you'd gain. Once the system is running, Dom0 
> shouldn't be doing much (if any) disk I/O - and if it is, then doing 
> it to a USB memory stick is likely to be more of a bottleneck to the 
> system as a whole than a few deeks on the hard disk(s).
Hi Simon,

Sometimes during times when the DomUs are busy, xm commands take a long 
time to execute. I always presumed that this was due to disk IO. Could 
it be something else?
Thanks

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