Date: Mon, 08 Dec 2008 10:29:36 +0100 From: Ivan Voras <ivoras@freebsd.org> To: freebsd-questions@freebsd.org Subject: Re: Backup complete gmirror/gstripe/gjournal drives, how-to? Message-ID: <ghipe0$dm5$1@ger.gmane.org> In-Reply-To: <493AFD81.6020705@polands.org> References: <493AFD81.6020705@polands.org>
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[-- Attachment #1 --] 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. Assuming that ad4,6,10,12 are the drives from which you created your RAID-10, everything is "backed up", including GEOM metadata. [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFJPOkAldnAQVacBcgRAkSIAKCb4nuHGx1muWwzE6qPohQULNlYMACcCDwI IgyVy1uRbEQoj44s2t3zi5o= =NtVP -----END PGP SIGNATURE-----
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