Date: Mon, 8 Dec 2008 09:33:48 -0600 From: Doug Poland <doug@polands.org> To: Ivan Voras <ivoras@freebsd.org> Cc: freebsd-questions@freebsd.org Subject: Re: Backup complete gmirror/gstripe/gjournal drives, how-to? Message-ID: <20081208153348.GA57784@polands.org> In-Reply-To: <ghipe0$dm5$1@ger.gmane.org> References: <493AFD81.6020705@polands.org> <ghipe0$dm5$1@ger.gmane.org>
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On Mon, Dec 08, 2008 at 10:29:36AM +0100, Ivan Voras wrote: > Doug Poland wrote: > > Hello, > > > > I've got a 7.1-PRERELEASE i386 box with 4 SATA drives configured in > > a RAID-10 using gmirror, gstripe, and gjournal. Normally, I use > > dump and rsync for periodic backups on this machine, but I suspect > > that the gmirror/gstripe/gjournal information is not being backed > > up. > > > > If my assumption is correct, how can I perform a "one-time" backup > > such that I could do a bare-metal restore? The essence of the > > question being I want to preserve not only the data, but also the > > gmirror/gstripe/gjournal meta-data as well. > > > > The only thought that comes to mind is to boot with a 7.1 live > > filesystem CD-ROM and "dd" each drive, piping the results to my > > backup machine. e.g., > > > > host# dd if=/dev/ad4 bs=2m | gzip | nc backuphost 12345 > > host# dd if=/dev/ad6 bs=2m | gzip | nc backuphost 12346 > > host# dd if=/dev/ad10 bs=2m | gzip | nc backuphost 12347 > > host# dd if=/dev/ad12 bs=2m | gzip | nc backuphost 12348 > > > > Any thoughts, suggestions, caveats? > > I hope you understand the problems with this kind of backup > procedures. > Actually, I don't, that's why I'm posting :) My intent is to have a backup that can be used to completely restore the machine, including all the GEOM metadata. My suggestion of using dd is the only thing I could come up with so far. So I'm asking, is there a better way? > Assuming that ad4,6,10,12 are the drives from which you created your > RAID-10, everything is "backed up", including GEOM metadata. > Yes, those are the names of my drives. Thank you for your time, -- Regards, Doug
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