From mboxrd@z Thu Jan  1 00:00:00 1970
Subject: Re: [linux-lvm] Automatic snapshot system?
References: <ufasnayrr4e.fsf@epithumia.math.uh.edu>
	<20011129004736.A14092@auctionwatch.com>
From: Jason L Tibbitts III <tibbs@math.uh.edu>
In-Reply-To: Petro's message of "Thu, 29 Nov 2001 00:47:36 -0800"
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Date: Thu Nov 29 14:41:01 2001
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>>>>> "p" == petro  <petro@auctionwatch.com> writes:

p> We have a home-brewed perl script called from cron that does a
p> snap, rsync's out the data, then releases the snapshot.

Interesting, but not quite what I'm trying to do.  Essentially I'd
like to use snapshots as a sort of quick online backup to guard
against users nuking their files.  Of course we do backups nightly,
but restoring from a snapshot is much quicker than messing with tapes.

So, depending on how snapshots actually work and the performance
penalty they incur and various other bits, I was thinking of doing a
daily or twice-daily snapshot, keeping them around for a few days,
then deleting them.  But that entails having around 100 snapshots
sitting around, and I don't know if there are performance problems
with doing that.

 - J<