Re: [Xen-users] Shared Storage

[Jonathan Tripathy <jonnyt@xxxxxxxxxxx>]

We're talking houndreds, if not thousands of DomUs here. Will iSCSI on 
Linux scale to these large numbers?
Thanks


On 24/04/2011 19:13, Jonathan Dye wrote:
> Why not create one iscsi lun per vm disk instead of carving them up on the 
> hypervisor?  That's more typical, and a more typical state of affairs in linux 
> is your friend.  Also, you would have just one lun queue if you exported one 
> big PV, instead of one lun queue per vbd. That becomes a problem at scale.
>
> - Jonathan
>
> ----- Original Message -----
> From: "Jonathan Tripathy"<jonnyt@xxxxxxxxxxx>
> To: "Xen List"<xen-users@xxxxxxxxxxxxxxxxxxx>
> Sent: Sunday, April 24, 2011 11:25:38 AM
> Subject: [Xen-users] Shared Storage
>
> Hi Everyone,
>
> I am consider such a setup where I export an iSCSI target to a Xen node.
> This Xen node will then use the iSCSI block device as an LVM PV, and
> create lots of LVs for DomU use.
>
> I was wondering if anyone could make me aware of any special
> consideration I would need to take. I've posted a similar question to
> the LVM list to ask for further tips more specific to LVM.
>
> Am I barking down the wrong path here? I know it would be very easy to
> just an NFS server and use image files, but this will be for a large
> scale DomU hosting so this isn't really an option. Additionally, if I
> wanted to make the LVM VG visible to multiple Xen nodes, is it just a
> matter of running CLVM on each Xen node? Please keep in mind that only
> one Xen node will be using an LV at any one time (so no need for GFS, I
> believe)
>
> Any help or tips would be appreciated
>
> Thanks
>
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
>    
_______________________________________________
Xen-users mailing list
Xen-users@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-users