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[Xen-users] Shared storage between open Xen, VMware ESX, XenServer, KVM

To: Xen List <xen-users@xxxxxxxxxxxxxxxxxxx>
Subject: [Xen-users] Shared storage between open Xen, VMware ESX, XenServer, KVM and a normal Linux...
From: Thiago Camargo Martins Cordeiro <thiagocmartinsc@xxxxxxxxx>
Date: Wed, 9 Dec 2009 14:05:39 -0200
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 I have one fiber channel IBM storage (10T) and 8 HP Proliant servers with 32G of RAM on each and 1 HP with 4G of RAM.

 My question is:

* How to use the same storage (block device) with all my different virtualization servers simultaneously?

 I have 2 open source Xen with CentOS 5.4, 2 VMWare ESX, 2 Citrix XenServer, 2 KVM powered by Ubuntu and 1 Debian exporting the IBM storage to a SAN via NFS/iSCSI/CIFS... And, I have more open source Xen servers using the same storage, but via NFS instead via fiber channel (HBA).

 So, how to store the virtual harddisks on a repository visible by all flavours of virtualization technologies?

 Is there some kind of cluster file system compatible with CentOS, ESX, XenServer, Ubuntu and Debian out there?

 Or... do I need to divide the storage, for example, creating LUNs for each kind of hypervisors?

 I'll try to ilustrate:

                   \_ (HBA) XenServer 1
                   \_ (HBA) XenServer 2
                   \_ (HBA) ESX 1
                   \_ (HBA) ESX 2
                   \_ (HBA) CentOS with Xen 1...2
                   \_ (HBA) Ubuntu with KVM 1...2
                   \_ (HBA) Debian 1
                                        \_ (NFS) XenServer 3
                                        \_ (NFS) XenServer 4
                                        \_ (NFS) Ubuntu KVM 3

 My Debian 1 is exporting the FC Storage via NFS, this is necessary because not all my hosts have the HBA interface but, I really want to be able to do a live motion from XenServer 3 to XenServer 1, for example! Or from KVM 3 to KVM 2...

 I appreciate ANY help!

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