Date: Thu, 24 Nov 2011 16:07:10 -0800 From: Freddie Cash <fjwcash@gmail.com> To: Andrew Reilly <areilly@bigpond.net.au> Cc: freebsd-fs@freebsd.org, Johannes Totz <jtotz@imperial.ac.uk> Subject: Re: backing up zfs dataset Message-ID: <CAOjFWZ4iOrSDgp2p2pf=62hcUYtBpY=oROSHXZPvCVwZV-f65w@mail.gmail.com> In-Reply-To: <20111124235843.GB96603@johnny.reilly.home> References: <j9jiud$oj6$1@dough.gmane.org> <20111124235843.GB96603@johnny.reilly.home>
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On Thu, Nov 24, 2011 at 3:58 PM, Andrew Reilly <areilly@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@gmail.com
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