From mboxrd@z Thu Jan 1 00:00:00 1970 Subject: Re: [linux-lvm] Automatic snapshot system? Message-ID: <20011130082244.A379@btconnect.com> References: <20011129004736.A14092@auctionwatch.com> Mime-Version: 1.0 Content-Disposition: inline In-Reply-To: ; from tibbs@math.uh.edu on Thu, Nov 29, 2001 at 02:42:58PM -0600 From: Joe Thornber Sender: linux-lvm-admin@sistina.com Errors-To: linux-lvm-admin@sistina.com Reply-To: linux-lvm@sistina.com List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: Date: Fri Nov 30 02:53:01 2001 List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-lvm@sistina.com On Thu, Nov 29, 2001 at 02:42:58PM -0600, Jason L Tibbitts III wrote: > >>>>> "p" == petro 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. It's a nice idea, but with the current implementation there's no way I'd want 100 snapshots of the same origin hanging around. - Joe