> > > > I can't see a way around some significant downtime even with that, and > > there is no way they will give me the option to be down from a planned > > perspective. > > So, out of nowhere straight into production, without performance user > acceptance testing period? And they won't allow any planned downtime? My > mind boggles. Yours too huh? This is the strangest place I have ever worked quite frankly. I've never been anywhere I could not set aside a 2 hour window at 3 am once a month for upgrades/maintenance. They don't allow me that here. Migrating from old file server to new one, was done with zero downtime and no interruption to the user community. Due to $$$, very little redundancy. Sure, downtime does happen, but only when something breaks. I could go on, I think you get the picture and whining about it doesn't help me here. Straight into production...well, not exactly. I set up a cluster, and moved one application over and it ran for about 3 months before we began the user moves. Once the users and mail were moved, that's when the load issues reared it's ugly head. Like I said, was really bad at first. Had to bump the nfs processes to 256..that helped some..setting the fs to fast = 1, had a much bigger impact. The odd thing is, it doesn't seem to take much to drive up the load. Being an engineering school, we have a lot of cadence users, and cadence writes 2-5k files on a big job, and it doesn't take more than 2 or 3 users doing this, along with the normal stuff always touching the fileserver (such as mail, web, etc) to drive up load. I can virus scan my mapped home directory and watch load jump by 2 or 3. Mounting my old home directory on the old file server and doing the same thing, you wouldn't even know I was touching files out there. It's like directory/file access is just very expensive for some reason and it goes against everything I know :P. Let me run this by you. I thought about another potential upgrade path. What if I remove one node from the cluster and run on one node, take the 2nd down, install 5, get it prepped. Is there anyway in the world to somehow bring it up and have it mount the volumes AS master and take the current primary down to then rebuild it? I think my answer is no, but thought it worth asking. This inability to cross version participate seems to really be my achilles heal here in getting it upgraded. > > Good luck. > > Gordan > > -- > 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
