[Linux-cluster] Home-brew SAN/iSCSI

[Madison Kelly]

Hi all,

   Until now, I've been building 2-node clusters using DRBD+LVM for the 
shared storage. I've been teaching myself clustering, so I don't have a 
world of capital to sink into hardware at the moment. I would like to 
start getting some experience with 3+ nodes using a central SAN disk.

   So I've been pricing out the minimal hardware for a four-node cluster 
and have something to start with. My current hiccup though is the SAN 
side. I've searched around, but have not been able to get a clear answer.

   Is it possible to build a host machine (CentOS/Debian) to have a 
simple MD device and make it available to the cluster nodes as an 
iSCSI/SAN device? Being a learning exercise, I am not too worried about 
speed or redundancy (beyond testing failure types and recovery).

Thanks for any insight, advice, pointers!

Madi