Thanks Lars,
I think that this is going to be the way I'm going to go. I'm going to migrate
the existing pool from its current location on a 1TB linux MD RAID 1 to a newly
created 2TB ZFS RAID 1 using 3x drives (the third being the fireproof
external). I do believe that this is where BackupPC_copyPcPool.pl will come in
handy, am I correct Jeffrey?
When we're ready to put in place the offsite backup, could I temporarily sync a
4th drive to the ZFS RAID array so that I can then transport the drive to our
collo, and import it there? Also, would I be correct in assuming that the ZFS
resilvering process is like other RAID systems, in that I wouldn't have to shut
down BackupPC during its resilvering process (that it would just update changes
as it went along automatically)?
Thanks,
--Mark
-----Original Message-----
From: Lars Tobias Skjong-Børsting [mailto:lists AT snota DOT no]
Sent: Saturday, March 02, 2013 2:28 PM
To: backuppc-users AT lists.sourceforge DOT net
Subject: Re: [BackupPC-users] BackupPC Pool synchronization?
Hi Mark,
On 3/1/13 10:37 PM, Mark Campbell wrote:
> Question, taking your model here, and applying it to my situation, how
> well would this work:
>
> BackupPC server, with a RAID1 zpool, with the third member being my
> external fireproof drive. Rather than the rotation you described,
> just leave it as is as it does its daily routine. Then, should the
> day come where I need to grab the drive and go, plugging the drive
> into a system with ZFSonLinux & BackupPC installed, could I mount this
> drive by itself?
Yes, this is no different, really. It would work very well. Just keep it in
sync, and all should be fine. You can just pull out any drive at will, without
causing any filesystem corruption. The fireproof drive can be inserted in a
different computer with ZFS support and you can run "zpool import" and then you
can mount the filesystem.
You shouldn't use USB for your external drive, though. E-SATA, Firewire or
Thunnderbolt is fine.
> I really like your idea of zfs send/receive for the remote copy. Do
> you have any tips/pointers/docs on the best way to run it in this
> scenario?
I don't mean to say RTFM, but the top results of a Google search are as good a
starting point as any:
https://www.google.com/search?q=zfs+send+receive+backup
I think this article is quite good:
http://cuddletech.com/blog/pivot/entry.php?id=984
If you have any further questions, don't hesitate to ask. :)
--
Best regards,
Lars Tobias
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