Hi GOrdan, Thanks for your reply. I had thought about DRBd, but would rather not mirror over network links, when I can mirror over the SAN. I am also not sure how DRBD would handle our running a Postgresql database on top of it, having never used DRBD in production. Do you have any experience with databases on DRBD? Thanks, Ivan. On Jul 27, 2011, at 2:05 AM, Gordan Bobic wrote: > 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 >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> >> . >> >> -- >> Linux-cluster mailing list >> Linux-cluster@xxxxxxxxxx >> https://www.redhat.com/mailman/listinfo/linux-cluster > > -- > Linux-cluster mailing list > Linux-cluster@xxxxxxxxxx > https://www.redhat.com/mailman/listinfo/linux-cluster . -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
