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[Xen-users] DRBD+Xen anyone?

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] DRBD+Xen anyone?
From: Steven Timm <timm@xxxxxxxx>
Date: Mon, 07 Apr 2008 13:58:56 -0500 (CDT)
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Has anyone been able to successfully make a cross-replicating
file system with DRBD?  I have two
different use cases:

1) a file system to store a cache of credentials that can
be written to and read from by two active Xen instances, one
on physical machine A and the other on physical machine B.
The file cache could be on either machine or on a third machine
if necessar.

2) A file system to be the back end for a stateful Web Services
server, with a second mirrored file system being kept up
such that if the first one goes down, the second one can mount it
and pick it up by means of linux-HA heartbeat or some other
failover mechanism.

If anyone has successfully managed to blend the DRBD modules
with the Xen patches, please let me know.

Steve Timm

Steven C. Timm, Ph.D  (630) 840-8525
timm@xxxxxxxx  http://home.fnal.gov/~timm/
Fermilab Computing Division, Scientific Computing Facilities,
Grid Facilities Department, FermiGrid Services Group, Assistant Group Leader.

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