ZFS backup to tape

ZFS backup to tape

Post by tristram.s » Sat, 07 Jul 2007 01:51:29


Hi,

what is the zfs equivalent of ufsdump and ufsrestore? Are we to use zfs
send | tar and then zfs receive?

Is there ever to be a direct replacement of the features of ufsdump? In
particular, I like the way I can do incremental backups and interactive
restores.

I see with zfs that snapshots are possible, which might be good for
recovering from accidentally deleting files, but what about a regular dump
to tape for the purpose of disaster recovery in the event of total disk or
system failure? My main requirement here is that I can take the set of
tapes and rebuild the entire system on new hardware. Ideally I would like
to avoid changing tapes too often, so a daily incremental on top of a
weekly full dump seems appropriate.

And, in the event that the above is trivial, is it going to be easy to
interleave these dumps with ufsdump sessions on a single tape? (The system
in question has both ufs and zfs file systems, and both are in need of
regular backup.)

The file systems in question are not very large (20 - 30 GB, perhaps to
grow to 50 - 60 GB). The target device is a DAT72 drive, locally attached.
The server itself is a T1000.

Any pointers would be greatly appareciated.

--
Dr Tristram J. Scott
Energy Consultant
 
 
 

ZFS backup to tape

Post by Thommy M » Sat, 07 Jul 2007 17:17:42

 
 
 

ZFS backup to tape

Post by tristram.s » Sun, 08 Jul 2007 01:33:47


[snip]


Thanks Thommy. That is helpful as a confirmation of where I thought the
current state of this was at.

Am I the only one who sees the lack of a ufsdump equivalent as a serious
drawback with using zfs?

I can see how backups can be achieved with snapshots and with zfs send and
zfs receive, but this is not at all like the (relative) simplicity which
ufsdump and its predecessors have offered for years.

--
Dr Tristram J. Scott
Energy Consultant
 
 
 

ZFS backup to tape

Post by Thommy M » Mon, 09 Jul 2007 05:52:55


We also have
http://www.yqcomputer.com/ ;jsessionid=97CB9#backupsoftware
 
 
 

ZFS backup to tape

Post by tristram.s » Tue, 10 Jul 2007 18:37:38


[snip]


Thanks Thommy. Your pointers have been helpful.


--
Dr Tristram J. Scott
Energy Consultant