Re: Use LVM on /dev/mapper/diskname and iSCSI

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On Mon, 2007-11-19 at 14:36 -0800, malahal@xxxxxxxxxx wrote:
> S. J. van Harmelen [svh@xxxxxx] wrote:
> > 
> > On the XenSource server I use a shared iSCSI storage so multiple servers
> > can access the same data so I can do live migrations. When I add the
> > storage XenSource creates a PV and then when I create a VM, it creates
> > LV's for each virtual harddisk.
> > 
> > So far so good I guess, as the XenSource machine uses the multipathed
> > drive, right?
> 
> Should.
>  
> > Now I would like to take snapshots of the whole PV so I can make
> > backups. My thoughts where to make a PV on /dev/mapper/xen that spans
> > the whole disk, and then create a single LV on it. 
> > 
> > If I then take the path to that single LV, say /dev/volumegroup/disk1 as
> > target for iSCSI, then the XenSsource server should only see that LV as
> > the shared iSCSI repository.
> > 
> > But then XenSource wil create a PV and a couple of LV's in the existing
> > LV (created on the storage server and shared true iSCSI). Could that
> > create any problems or can I just do that?
> 
> I don't see any problem. You should be able to do that, but then I am
> not an expert. Give it a try.

Thanks, I will give it a try then!

Sander

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