Hello everyone,
I wanted to know if any of you had some experience with building a
redundant xcp/xenserver cluster based on drbd. In this setup I would
like to avoid a separate iscsi SAN, and have replicated local storage.
There are docs on the internet showing how to set up a dual primary drbd
SR on xenserver/xcp. It works fine with live migration and all, but when
trying disaster scenario, like severing the drbd replication link, one
gets a split brain scenario that cannot be unsolved. It should be doable
if xapi had a smart understanding of drbd, but currently it is just a SR
like others. So it is a no-go for the time being.
I also tried a drbd primary-secondary scenario, with re-export with iet
iscsi target, but for the moment I have unresolved performance issues
(will try also with scst target).
So I wanted to know if any of you had any experience or hints with this
kind of setup : a dual active/active XCP servers with local SR
replicated with primary-secondary DRBD, re-exported with iscsi or aoe or
whatever.
Cheers,
Denis Cardon
--
Denis Cardon
Tranquil IT Systems
44 bvd des pas enchantés
44230 Saint Sébastien sur Loire
tel : +33 (0) 2.40.97.57.57
http://www.tranquil-it-systems.fr
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