Re: [Xen-users] XEN Images Storage

[Alejandro Weintz Aguilar <alejandro@xxxxxxxxxxxxxxxxx>]

A setup with debian + GB network + Open-Iscsi +heartbeat would work?

thx
On Wed, 2008-01-23 at 08:50 -0700, Nick Couchman wrote:
> I have my XEN servers on a SAN and I use OCFS2 and EVMS to create
> storage areas for my servers.  This also requires that you configure
> heartbeat, as the cluster part of EVMS uses heartbeat.  I've run into
> a couple of issues with this method, though - first, I'm not able to
> resize volumes on EVMS.  Second, I've had some trouble getting
> heartbeat to work correctly, especially when adding nodes to it.  That
> could just be my lack of experience with the tool, though. 
> 
> 
> Based on my experience, I'd suggest something like this: 
> 
> 1) If you don't have a SAN, get a machine that has a good deal of
> built-in redundancy (redundant power supplies, HARDWARE RAID unit,
> etc.) and set it up as an iSCSI server (you can use iSCSI Enterprise
> Target - ietf - for this).  Use dual network cards and some sort of
> redundant Ethernet setup (bonding, for example) to connect this
> machine to a switch.  Even the cheapest of "smart switches" (NetGear
> GS108T, for example) support link aggregation. 
> 
> 2) Use either iSCSI HBAs (Qlogic has some nice ones) or the iSCSI
> software initiator and connect your XEN servers to the iSCSI Target. 
> 
> 3) Use LVM2 with clvmd (Cluster LVM Daemon) to manage volumes.  This
> will give you the flexibility to choose whether you'd like to create
> one big storage area and store the disk images as files in that folder
> or configure each VM to have its own LVM volume. 
> 
> 4) If you choose to create a large file share and mount it, use OCFS2
> or GFS on the share.  Configuration of either of these filesystems is
> relatively easy.  GFS has the plus of supporting POSIX ACLs, but I'm
> not sure that really matters on XEN servers, so compare them and pick
> the ones you like. 
> 
> 
> -Nick
> 
> >>> On Wed, Jan 23, 2008 at  8:04 AM, Alejandro Weintz Aguilar
> <alejandro@xxxxxxxxxxxxxxxxx> wrote:
> 
> 
> I want to build on Open Source tools a high availabitiy server to
> store
> my images, someone with suggestions? experiences plz. really
> aprreciate.
> 
> Started to try Gluster but yesterday discussion pointed me very
> important things.
> 
> thx
> 
> 
> 
> 
> 
> 


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