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- Newsgroups: vmsnet.sysmgt
- Path: sparky!uunet!eco.twg.com!eco.twg.com!reece
- From: reece@eco.twg.com (Reece R. Pollack)
- Subject: Re: Need Help With Disk Rebuild Problem.
- Message-ID: <1992Jul30.220148.6530@eco.twg.com>
- Lines: 34
- Sender: reece@crash.eco.twg.com (Reece R. Pollack)
- Nntp-Posting-Host: eco.twg.com
- Reply-To: reece@eco.twg.com (Reece R. Pollack)
- Organization: The Wollongong Group (East Coast Operations)
- References: <1992Jul30.004447.1273@iitmax.iit.edu>
- Date: Thu, 30 Jul 92 22:01:48 GMT
- Lines: 34
-
-
- In article <1992Jul30.004447.1273@iitmax.iit.edu>, draughn@iitmax.iit.edu (Mark Draughn) writes:
- |>I'm having a system performance problem that I hope someone can help
- |>me with.
- |>
- |>We're running VMS 5.4-2.
- |>
- |>We have about 9000 users on our VAX cluster. All of the user
- |>directories are on one volume set containing about 200000 files using
- |>2.5 GB, which is served to the cluster.
- |>
- |>THE PROBLEM: After a crash, when the volume set is mounted, the
- |>automatic rebuild takes about an hour. This is a major pain.
- |>
- |>I've got things set up so that this volume is only rebuilt if the
- |>server crashes. If one of the satellites crashs, we live with the
- |>corruption. This is still a problem because a server crash will hang
- |>all user file activity for an hour during the rebuild. Even a simple
- |>shutdown-and-reboot cycle on the server can take an hour if any of the
- |>systems in the cluster has crashed since the last reboot.
-
- If your crashes aren't very frequent, why not skip the rebuild until
- a slack period like midnight?
-
- $ MOUNT/NOREBUILD ...
-
- Then a batch job can do:
-
- $ SET VOLUME/REBUILD ...
-
- --
- Reece R. Pollack
- Senior Software Engineer
- The Wollongong Group, Inc.
-