On Sun, Jun 13, 2010 at 12:18 AM, Joe Auty <j...@netmusician.org> wrote:
> Thomas Burgess wrote: > > >> Yeah, this is what I was thinking too... >> >> Is there anyway to retain snapshot data this way? I've read about the ZFS >> replay/mirror features, but my impression was that this was more so for a >> development mirror for testing rather than a reliable backup? This is the >> only way I know of that one could do something like this. Is there some >> other way to create a solid clone, particularly with a machine that won't >> have the same drive configuration? >> >> >> >> > I recently used zfs send/recv to copy a bunch of datasets from a raidz2 > box to a box made on mirrors. It works fine. > > > ZFS send/recv looks very cool and very convenient. I wonder what it was > that I read that suggested not relying on it for backups? Maybe this was > alluding to the notion that like relying on RAID for a backup, if there is > corruption your mirror (i.e. machine you are using with zfs recv) will be > corrupted too? > > At any rate, thanks for answering this question! At some point if I go this > route I'll test send and recv functionality to give all of this a dry run. > > > well, it's not considered to be an "enterprise ready backup solution" I think this is due to the fact that you can't recover a single file from a zfs send stream but despite this limitation it's still VERY handy. Another reason, from what i understand by reading this list, is that the "zfs send" streams aren't resilient. If you do not pipe it directly into a zfs receive, it might get corrupted and be worthless....(basically don't save the output of zfs send and expect to receive it later) again, this is not relevant if you are doing a zfs send into a zfs receive at the other end.... I think the 2 reasons i just gave are the reasons people have warned against it...but still, it's damn amazing. > -- > Joe Auty, NetMusician > NetMusician helps musicians, bands and artists create beautiful, > professional, custom designed, career-essential websites that are easy to > maintain and to integrate with popular social networks. > www.netmusician.org > j...@netmusician.org > >
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