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- From: berliner@rmtc.Central.Sun.COM (Brian Berliner)
- Subject: Re: Automatic dump 0 backup, need help!
- Message-ID: <1992Aug27.132452.21715@rmtc.Central.Sun.COM>
- Organization: Sun Microsystems, Inc.
- References: <13741@chalmers.se>
- Date: Thu, 27 Aug 92 13:24:52 GMT
- Lines: 31
-
- In <13741@chalmers.se> d0bpl@dtek.chalmers.se (Patrik Larsson) writes:
- >I am doing an automatic backup every night. This is an icremental backup
- >with dump 9. Every friday I do a complete backup (dump 0). To do this I
- >need to set the SUN in single-user mode. Today I do this manually.
-
- >The question is: how do I tell cron to
-
- > 1, enter single-user mode
- > 2, make several dump 0's
- > 3, reenter multiuser-mode and start up everything
-
- >Any help is appriciated!
-
- Ideally, you *don't* tell cron to drop the machine to single-user to do
- your backup. Else you will lose all your processes and network-provided
- services (there goes NFS).
-
- You can purchase the Sun Backup Copilot software product. It includes a
- version of "dump" that cooperates with the file system to block certain
- operations during the different phases of "dump" (all configurable, of
- course). This increases your availability dramatically over going to
- single-user mode, since only the file system that is being dumped will have
- these temporary locks applied -- and you are assured of creating a backup
- tape that is restorable.
-
- The cost of the product is really low, too, as you only pay for the
- machines that you will use as the backup tape servers. A right-to-use is
- included with the purchase for clients that simply dump to a tape server.
- Check it out!
-
- -Brian
-