Date: Mon, 22 Nov 2010 10:26:30 -0500 From: Jonathan Stewart <jonathan@kc8onw.net> To: Andrew Reilly <areilly@bigpond.net.au> Cc: stable@freebsd.org Subject: Re: ZFS backups: retrieving a few files? Message-ID: <4CEA8BA6.7080009@kc8onw.net> In-Reply-To: <20101122113541.GA74719@johnny.reilly.home> References: <20101122113541.GA74719@johnny.reilly.home>
next in thread | previous in thread | raw e-mail | index | archive | help
On 11/22/2010 6:35 AM, Andrew Reilly wrote: > Dump/restore doesn't work for ZFS. I *think* that I'm running > backups in the appropriate equivalent fashion: I take file > system snapshots (both absolute == level 0) and relative > (incremental), and zfs send those to files on the backup disk. This is actively discouraged, there is no recovery ability when receiving zfs streams so 1 bad bit would invalidate your entire backup. The currently accepted practice is to create a ZFS file system on the backup drive and just keep sending incremental snapshots to it. As long as the backup drive and host system have a snapshot in common you can do incremental transfers. This way you only have to keep the most recent snapshot on the main system and can keep as many as you have space for on the backup drive. You also have direct access to any backed up version of every file. HTH, Jonathan
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?4CEA8BA6.7080009>