Re: [Xen-users] Opinion on best way to use network storage

[Bart Coninckx <bart.coninckx@xxxxxxxxxx>]

On Friday 12 November 2010 14:29:48 Jorge Viana wrote:
> I'm using OCFS2, another possibility is CLVM or
> GFS(requires hardware fencing support).
> 
> On Fri, Nov 12, 2010 at 7:11 AM, Bart Coninckx 
<bart.coninckx@xxxxxxxxxx>wrote:
> > On Friday 12 November 2010 04:28:46 VPS Lime wrote:
> > > I need the community's opinion on the best way to use my storage SAN to
> > > host xen images.  The SAN itself is running iSCSI and NFS.  My goal is
> > > to keep all my xen images on the SAN device, and to be able to easily
> > > move images from one host to another as needed while minimizing
> > > storage requirements and maximizing performance.
> > > 
> > > What I see are my options:
> > > 
> > > 1) Export a directory through NFS.  Create image files on the NFS mount
> > 
> > and
> > 
> > > have each zen guest use the image off the NFS mount.  This has the
> > 
> > benefit
> > 
> > > of all images being visible to all hosts (on the NFS mount), but I'm
> > > not sure about the performance.
> > > 2) Create an image on the SAN server for each XEN host and export it to
> > 
> > the
> > 
> > > XEN servers through iSCSI.  The XEN server will see it as a
> > > VolumeGroup.
> > > 
> > >  Create Logical Volumes in the VolumeGroup for each XEN guest.  Has the
> > > 
> > > advantage of using LVM for the guest instead of an image file (which is
> > > rumored to be faster).  Disadvantage is individual images are not
> > > easily moved to other hosts
> > > 3) Create a image on the SAN server for each XEN guest and export it
> > > through iSCSI.  Attach XEN guests directly to the iSCSI image.  Has the
> > > advantage of being portable to other hosts, maybe more efficient?
> > > 
> > > Thanks in advance
> > 
> > Do you want to snapshot your Xen guest storage by means of LVM?
> > 
> > B.
> > 
> > _______________________________________________
> > Xen-users mailing list
> > Xen-users@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-users

It was my understanding CLVM does not support snapshotting. Too bad, a CoW 
solution would be ideal for you.


B.

_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users