On 11/22/2010 5:13 PM, Andrew Reilly wrote:
On Mon, Nov 22, 2010 at 10:26:30AM -0500, Jonathan Stewart wrote:
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.
Hmm. Isn't that a problem that also affects the "sending
snapshots" scheme that you describe, below?
When sending the snapshots to a new file system you know right away
whether they are bad or not. Otherwise you find out when you are trying
to restore and your backups are bad... A send could fail but you can
always retry that, you can't retry anything when your trying to restore.
Jonathan
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