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- Path: sparky!uunet!cis.ohio-state.edu!pacific.mps.ohio-state.edu!linac!att!ucbvax!f1.n700.z6.fidonet.org!Ian.Parker
- From: Ian.Parker@f1.n700.z6.fidonet.org (Ian Parker)
- Newsgroups: comp.os.vms
- Subject: RE: Clustered global sec
- Message-ID: <18832.2A9A705B@puddle.fidonet.org>
- Date: 25 Aug 92 16:25:12 GMT
- Sender: daemon@ucbvax.BERKELEY.EDU
- Distribution: world
- Organization: The Internet
- Lines: 44
-
-
- On 08-20-92 Nick de Smith wrote to All...
-
- Nd> Ian Parker wrote:
- Nd>
- Nd> >I'm just about to cluster a couple of VAXs. On one VAX an
- Nd> application uses global sections to communicate between processes.
- Nd> After clustering we want this application to be available across
- Nd> the cluster.
- Nd> >
- Nd> >Is there a problem?
- Nd> >
- Nd>
- Nd> Although you cannot directly share global sections, you can
- Nd> communicate across a cluster using the lock manager. I had an
- Nd> application where I was occasionally writing chunks of data to
- Nd> a global section on one host, and wanted the same data
- Nd> to appear on other hosts. You can do this with a server
- Nd> process that manages all reads and write to the section. All the
- Nd> servers hold a CR lock on a common resource.
-
- Nick
-
- Much thanks. I'm getting good, if depressing, responses to
- my question. As I've said the others, I don't yet know how much
- data the application is throwing around. If it's small, then we
- will see if we can change it to simply use the lock value blocks.
- If its bigger, then I'll look at RMS or Decnet.
-
- Now I may look into your idea more. Give me a week or so to check
- out the application.
-
- Much thanks
-
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