Thanks Roger. Will do that.

-Syed

On Fri, Apr 1, 2016 at 12:38 PM, Roger Pau Monné <roger.pau@citrix.com>
wrote:

> On Fri, 1 Apr 2016, Syed Mushtaq wrote:
> > Hi,
> >
> > I am testing out a system in which each Guest disk is mapped to a LUN on
> a backend storage. I am using Xenserver 6.5 for this and creating an SR
> with a single VDI inside it for each Guest disk.
> > The way it would work is, from an LVM point of view, I would have a
> Volume Group (VG) for each virtual disk and a single logical volume (LV)
> inside that VG. What I am seeing is that creating new
> > volume groups is taking a lot of time. In my test after creating about
> 600 volume groups, it took about 4 seconds to create a new one. I have
> observed this to be a linear trend where the more
> > VGs I add the slower future operations become. Other operations like
> getting the logical volumes inside a VG have also slowed down (even though
> there is only 1 LV per VG).
> >
> > I was wondering if anyone here faced a similar problem or had some
> experience in dealing with LVM bottlenecks.
>
> It doesn't seem like this is related to Xen, so I would recommend that you
> ask in the linux-lvm [0] mailing list. TBH, I have no idea how well LVM
> scales in these kind of scenarios.
>
> Roger.
>
> [0] https://www.redhat.com/mailman/listinfo/linux-lvm
>