backing up zfs dataset

[Freddie Cash]

On Thu, Nov 24, 2011 at 3:58 PM, Andrew Reilly <areilly at bigpond.net.au>wrote:

> I do think that backup is something of a weakness for ZFS at
> the moment.  Sure, live filesystems and snapshots are clearly
> cool, and the modern way and all, but there is an awful lot of
> flexibility and ease of undersanding in the model of a "backup
> file on a tape."  Doesn't have to be on a tape, but the moral
> equivalent to dump/restore would (in my book) be a wonderful
> addition to ZFS, if anyone felt inclined.  Just padding the
> send/receive serialisation format with enough checksum and
> restart information to allow detection and graceful recovery
> from read errors in the backup medium would do the job.


One could probably work around this by doing a zfs send to a file, then
running it through parchive [1] to generate all the redundancy data.
 Granted, I've never used par, so it may or may not be feasible.

[1] http://parchive.sourceforge.net

-- 
Freddie Cash
fjwcash at gmail.com