Re: [Xen-users] weird domU sizes

[Brian Krusic <brian@xxxxxxxxxx>]

Hi Kai,

Thanks for the reply.

I've done more tests and have confirmed that wne I do a simple cp to  
an nfs or local storage wether its ext3 or xfs, the size of the file  
is roughly 1/3 of the size of that same file in its soruce dir of /var/ 
lib/xen/images.
The backups are fully functional and seem to have no issues but its  
still puzzling to me.
I don't consider this a bonus that the copy ends up being a lot  
smaller because this could be a prelude to disaster.
Any one care to comment and why I am seeing this?

Has any one else done backups of the domU files to other locations and  
seen a diff in size?
I've even had the backup machine be a smaller disk the the source with  
the same results.
- Brian




On Jan 16, 2009, at 3:31 PM, Kai Schaetzl wrote:

> Brian Krusic wrote on Fri, 16 Jan 2009 10:19:02 -0800:
>
> > Would my image be a sparse file since I didn't allocate full image
> > size at creation?
> correct, that is what sparse files are for ;-) In my experience when  
> you
> copy a sparse file the result is the "full" file. So, the result of  
> the
> scp is expected. I'm surprised by the copy result to your nfs, maybe  
> it's
> a result of using xfs.
>
> Kai
>
> --
> Kai Schätzl, Berlin, Germany
> Get your web at Conactive Internet Services: http://www.conactive.com
>
>
>
>
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