[DRBD-user] Citrix XenServer 5.5 + drbd for HA
scott at northwestcomputer.biz
Mon Nov 2 10:58:18 CET 2009
I have a support agreement and therefore have access to the extended guide,
yet I can't find mention of xenserver specifics. I'm hitting my head against
the wall right now with SR's, LVM, and DRBD.
From: drbd-user-bounces at lists.linbit.com
[mailto:drbd-user-bounces at lists.linbit.com] On Behalf Of Adam Gandelman
Sent: Sunday, October 18, 2009 17:32
To: drbd-user at lists.linbit.com
Subject: Re: [DRBD-user] Citrix XenServer 5.5 + drbd for HA
DRBD can be used from within xenserver to replicate storage
repositories. This is documented in our extended users guide. You can
also use DRBD to build HA iSCSI/NFS clusters to serve HA SRs to an
entire xenserver pool. However, HA on the VM level is the job of a
higher level cluster manager and, AFIK, this is either not possible to
do with OCF-based CRMs or nobody has developed it yet. It is something
I plan on looking into in the coming months. Citrix offers an
enterprise add-on for this but it does not provide any redundancy on the
storage level, so some other form of shared storage (more $$) is
required. If you need HA storage repositories for your xenserver domUs,
DRBD is a relatively easy "drop in" solution.
If you do not need or want the features of XenServer/XenCenter,
heartbeat/pacemaker can monitor OSS Xen domUs in addition to DRBD.
There is an Xen OCF script that is shipped with Pacemaker.
hope that helps
Beck Ingmar wrote:
> are there news regarding Citrix XenServer 5.5 and drdbd as HA solution?
> Florian told me some months ago that so far there is no known solution
> for this.
> Has someone already implemented this? Is there a guide / how-to for this
> Is this solution better or worse than a HA-cluster with Xen-OS and
> drbd to
> eg Debian 5. What would be the advantages and disadvantages of this
> drbd-user mailing list
> drbd-user at lists.linbit.com
: Adam Gandelman
: Telephone: 1-503-573-1262 Ex. 203
: LINBIT | Your Way to High Availability
: Sales: 1-877-4-LINBIT / 1-877-454-6248
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