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Re: [Xen-users] iSCSI and LVM

  • To: xen-users@xxxxxxxxxxxxxxxxxxx
  • From: Igor Shalakhin <igor@xxxxxxxxx>
  • Date: Wed, 16 Jun 2010 00:30:16 +0400
  • Delivery-date: Tue, 15 Jun 2010 13:31:45 -0700
  • List-id: Xen user discussion <xen-users.lists.xensource.com>

Hi Jonathan!

I think, You can look to OpenSolaris/Nexenta for iSCSI NAS. This solution can help You to solve many problems with backup (zfs snapshots not degrading disk's performance and taking it is very easy and automatically). Also Nexenta have very good www admin interface , then You can export separate iSCSI LUN for each DomU and can easy managing it.
Hi Everyone,
I am going to get a storage server which will be connected to my Xen hosts via iSCSI/Ethernet. I wish to use LVM for the DomU disks. The storage server will have a RAID10 array, and 2 Xen hosts will connect to this (Each will have a 50% share of the RAID10 array, space wise).
What is the best way to go about this? Should I:
a) Split the RAID10 array into 2 partition on the storage server, and export 1 partition to each xen host, then let the Xen host manage LVM?
b) Do all LVM stuff on the storage server and export each LVM logical volume to the correct Xen hosts via iSCSI? Since each host could have around 100 VMs on it, that's a lot of iSCSI exporting!
Any help is appreciated
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