Re: Backups done right (was [ANNOUNCE] Ext3 vs Reiserfs benchmarks)

Bill Davidsen (davidsen@tmr.com)
Thu, 18 Jul 2002 11:04:01 -0400 (EDT)


On Tue, 16 Jul 2002 stoffel@lucent.com wrote:

> 3a. lock mirrored volume, flush any outstanding transactions, break
> mirror.
> --or--
> 3b. snapshot filesystem to another volume.

Good summary. The problem is that 3a either requires a double morror or
leaving the f/s un mirrored, and 3b can take a very long time for a big
f/s.

In general mauch of this can be addressed by only backing up small f/s and
using an application backup utility to backup the big stuff. Fortunately
the most common problem apps are databases and and they include this
capability.

-- 
bill davidsen <davidsen@tmr.com>
  CTO, TMR Associates, Inc
Doing interesting things with little computers since 1979.

- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/