I've racked my brain on this one, so hopefully someone will be of some help. I'm trying to set up two servers which share a drive and do not have a Single Point of Failure. They are on a local network with each other. The best solution would be to have /dev/sda1 on one server mirrored with /dev/sda1 on the second server. I've looked into a few solutions. One was DRBD. This would work great if I was using the second server as a hot spare, but since both server's can't have read-write access to the drbd device simultaneously, this won't work. A second solution was to use GFS/GNBD. I can export each drive to the other server, and do RAID 1 (on both servers) between the local /dev/sda1 and the remote gnbd device. I then format the raid device with GFS so both servers can mount it. Surprisingly, this last system works. Both systems can mount the drive and read-write to it. However, if either server in this configuration drops dead, the other server cannot deal with the dead gnbd device, and the raid device and mount point are no longer usable. I'm sure there are numerous other problems with this setup, also. So I'm looking for ideas. With two servers, how can I mirror a drive in real-time, and allow for failover? Thanks, Derek _______________________________________________ linux-lvm mailing list linux-lvm@redhat.com https://www.redhat.com/mailman/listinfo/linux-lvm read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
