Jorgen Lundman wrote: > If we were to get two x4500s, with the idea of keeping one as a passive > standby (serious hardware failure) are there any clever solutions in > doing so? > > We can not use ZFS itself, but rather zpool volumes, with UFS on-top. I > assume there is no zpool send/recv (although, that would be pretty neat > if there was!).
It may be a little bit unclear from the man page, but zfs send/receive can operate on snapshots of a volume too. Here is an example: # zfs create -b 8k -V 10M pool/vol # zfs list pool/vol NAME USED AVAIL REFER MOUNTPOINT pool/vol 22.5K 5.81G 22.5K - # zfs snapshot pool/[EMAIL PROTECTED] # zfs list pool/vol NAME USED AVAIL REFER MOUNTPOINT pool/vol 22.5K 5.81G 22.5K - # zfs send pool/[EMAIL PROTECTED] > /var/tmp/pool.vol.now # ls -l /var/tmp/pool.vol.now -rw-r--r-- 1 root root 12368 Jan 31 17:02 /var/tmp/pool.vol.now # zfs list tank/vol cannot open 'tank/vol': dataset does not exist # cat /var/tmp/pool.vol.now | zfs receive tank/vol # zfs list tank/vol NAME USED AVAIL REFER MOUNTPOINT tank/vol 22.5K 31.8G 22.5K - # > Doing full rsyncs all the time would probably be slow. > > Would it be possible to do a snapshot, then 10 minutes later, another > snapshot and only rsync the differences? Yes. See man page for zfs(1m) for description of '-i' option for zfs send. Hth, Victor _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
