[zfs-discuss] Backup/Restore

[Cesare]

Hi all,

I've recently started down to put on production use for zfs and I'm looking
to how doing a backup of filesystem. I've more than one server to migrate to
ZFS and not so more server where there is a tape backup. So I've put a L280
tape drive on one server and use it from remote connection.

The ZFS configuration and command to make a backup is the following:

--- Client A

Client-A# zpool list
NAME                    SIZE    USED   AVAIL    CAP  HEALTH     ALTROOT
tank                    119G   50.0G   69.0G    42%  ONLINE     -
Client-A# zfs list
NAME                    USED  AVAIL  REFER  MOUNTPOINT
tank                   37.4G  50.2G  36.7K  /tank
tank/zones             37.2G  50.2G  25.6G  /opt/zones
tank/zones at 2008.10.28  11.6G      -  25.0G  -
Client-A# zfs send tank/zones at 2008.10.28 | /opt/3pp/openssh/bin/ssh -c
blowfish -l root server-backup <http://10.1.101.30> \(dd ibs=258048
of=/dev/rmt/1 obs=2064384 \)

When I want to restore what I've dumped, I do the following:

Client-B# zfs list
NAME          USED  AVAIL  REFER  MOUNTPOINT
tank          144K  66.9G  27.5K  /tank
tank/backup  24.5K  66.9G  24.5K  /tank/backup
tank/zones   24.5K  66.9G  24.5K  /tank/zones
Client-B# zpool list
NAME                    SIZE    USED   AVAIL    CAP  HEALTH     ALTROOT
tank                     68G    148K   68.0G     0%  ONLINE     -
Client-B# /opt/3pp/openssh/bin/ssh -c blowfish -l root server-backup \(dd
if=/dev/rmt/1 bs=2064384 \) | zfs receive tank/zones
stty: : Invalid argument
cannot receive: invalid stream (bad magic number)
select: Bad file number
Client-B#

What the trick?

Thanks
 Cesare
-- 

Groucho Marx  - "All people are born alike - except Republicans and
Democrats."
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