We looked at the Levanta product in detail. It depends on the "zero-latency" LAN mechanism provided by hipersockets, and they deal with the SPOF problem by having redundant NFS servers. They also have their own NFS-like filesystem client that's supposed to be more robust than a conventional NFS setup would be.
How all this works in actual practice, we haven't seen. We had some issues with the version that we looked at, and are waiting for the next release. > -----Original Message----- > From: Alan Cox [mailto:[EMAIL PROTECTED] > Sent: Tuesday, March 25, 2003 2:10 PM > To: [EMAIL PROTECTED] > Subject: Re: [LINUX-390] Multiple guests sharing /usr RO... Using RPM > > > On Tue, 2003-03-25 at 17:32, Adam Thornton wrote: > > On Tue, Mar 25, 2003 at 03:12:30PM +0000, Jason McMullan wrote: > > > Daniel Jarboe <[EMAIL PROTECTED]> wrote: > > > > Is there a generally accepted "best way" to > upgrade/install packages > > > > with RPM with a shared RO /usr across multiple images? > > > Tooting my own horn a bit here, Linuxcare's > Levanta product > > > will handle this, and much more. > > > > Doesn't Levanta handle this by giving all the DASD to a > single image and > > have everyone else NFS-mount it? Not to say it's not > effective, just > > NFS prevents individual clients having any effective caching. That can > be really bad over conventional networks, I dont know about S/390. It > also gives you a single point of failure if the NFS supplier goes down >
