OES2: clustering

I made a cluster inside Xen! Two NetWare VM's inside a Xen container. I had to use a SAN LUN as the shared device since I couldn't make it work doing it just to a single file. Not sure what's up with that. But, it's a cluster, the volume moves between the two just fine.

Another thing about speeds, now that I have some data to play with. I copied a bunch of user directory data over to the shared LUN. It's a piddly 10GB LUN so it filled quick. That's OK, it should give me some ideas of transfer times. Doing a TSATEST backup from one cluster-node to the other (i.e. inside the Xen bridge) gave me speeds on the order of 1000MB/Min. Doing a TSATEST backup from a server in our production tree to the cluster node (i.e. over the LAN) gave me speeds of about 350MB/Min. Not so good.

For comparison, doing a TSATEST backup from the same host only drawing data from one of the USER volumes on the EVA (highly fragmented, but must faster, storage) gives a rate of 550 MB/Min.

I also discovered the VAST DIFFERENCES between our production eDirectory tree, which has been in existence since 1995 if the creation timestamp on the tree object is to be believed, and the brand new eDir 8.8 tree the OES2 cluster is living in. We have a heckova lot more attributes and classes in the prod tree than in this new one. Whoa. It made for some interesting challenges when importing users into it.