Re: [Xen-users] Converting AND shrinking domU

[James Pifer <jep@xxxxxxxxxxxxxxxx>]

On Thu, 2010-04-22 at 13:09 -0600, Nick Couchman wrote:
> >>> On 2010/04/22 at 10:52, James Pifer <jep@xxxxxxxxxxxxxxxx> wrote: 
> > I'm currently running xen 3.4 on sles11. I currently use ocfs2, but I'm
> > going to move away from it because of issues we've been having. Instead,
> > we'll be assigning LUNs from our san to the xen servers and domU's will
> > essentially have their own disk. This puts a lot more space requirements
> > in play. With that in mind, I want to shrink a lot of our domUs. 
> > 
> 
> Two questions:
> 1) What issues are you having with OCFS2?
> 2) Does your SAN support "thin provisioning?"
> 3) Why is switching from OCFS2 to raw disks per domU taking up any
> more space?  OCFS2 does not allow for "sparse" disks, which means you
> should see similar disk requirements between OCFS2 and "thick
> provisioning" on your SAN.
> 
> -Nick
> 
> 
> 
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ïOCFS2 does not allow sparse disks? I've never heard of that. I have had
tickets open with novell and they have never said it's not supported.
I've emailed this list saying we're using ocfs2 and sparse files and
nobody has raised any flags before (which could be understandable being
a mailing list).

We are currently doing sparse files on ocfs2. It was going fine for
about a year, then we started having problems with ocfs2 becoming
corrupted. 

I don't know if the SAN supported thin provisioning, but I'm also not
sure what you mean. Can you elaborate a little? 

Thanks,
James


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