I don't think this has anything to do with clustering, but what you are
probably looking for is DRBD:
http://www.drbd.org/
Gordan
On Tue, 26 Jul 2011 23:47:03 -0600, Ivan Fetch <ifetch@xxxxxx> wrote:
Hello,
I am not finding a lot of docs or commentary about accomplishing
RAID1 of two shared storage (FC SAN) LUNs, in RHCS. I wlikd like to
RAID1 two mpath devices (using the device multipathing with RHEL5).
The mpath devices (mpath0, mpath1) do not match up on all nodes, but
I
don't believe this technically matters, since md uses UUIDs to
detects
it's disk devices.
I could just configure an md device, but it seems like there should
be a notion of which node owns the md. WHat happens when the active
node is resyncing a mirror, and that node dies or gets fenced? WHat
happens if someone tries to operate on the md from the inactive node?
I would very much appreciate hearing from those who are accomplishing
this, how they did it, gotchas and lessons learned.
Thanks,
- Ivan
.
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