Last night, I moved a SAS card and had to renumber some devices. I also moved two SSDs into the same box (see photos). Those SSDs were the boot drives from the system from which I pulled the SAS drive. That box, tape01, contains the Bacula configuration file I need for this new box.
I know, I know. Why not use Bacula to restore that file.
That would be too easy. I want to try this because I’ve never done this.
Instead, I am going to use zpool import.
$ sudo zpool import pool: zroot id: 13361499957119293279 state: ONLINE status: The pool was last accessed by another system. action: The pool can be imported using its name or numeric identifier and the '-f' flag. see: http://illumos.org/msg/ZFS-8000-EY config: zroot ONLINE mirror-0 ONLINE ada2p3 ONLINE ada1p3 ONLINE
I originally thought I could not import this pool because it had the same name as a pool already on the system. I see now that is not so.
However, if it was the same name, I could still import it via zpool import … id newname.
Let’s do exactly that.
[dan@knew:/mnt] $ sudo zpool import -R /mnt 13361499957119293279 newZroot cannot import 'zroot': pool may be in use from other system, it was last accessed by (hostid: 0xd697c68e) on Tue Mar 1 10:25:20 2016 use '-f' to import anyway [dan@knew:/mnt] $ sudo zpool import -fR /mnt 13361499957119293279 newZroot
That took about 90 seconds to import.
[dan@knew:/mnt]$ zpool status pool: newZroot state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM newZroot ONLINE 0 0 0 mirror-0 ONLINE 0 0 0 ada2p3 ONLINE 0 0 0 ada1p3 ONLINE 0 0 0 errors: No known data errors pool: system state: ONLINE scan: scrub repaired 40.6M in 33h55m with 0 errors on Thu Feb 25 14:25:13 2016 config: NAME STATE READ WRITE CKSUM system ONLINE 0 0 0 raidz2-0 ONLINE 0 0 0 da0p3 ONLINE 0 0 0 da1p3 ONLINE 0 0 0 da2p3 ONLINE 0 0 0 da3p3 ONLINE 0 0 0 da4p3 ONLINE 0 0 0 da5p3 ONLINE 0 0 0 ada0p3 ONLINE 0 0 0 da6p3 ONLINE 0 0 0 ada3p3 ONLINE 0 0 0 da7p3 ONLINE 0 0 0 errors: No known data errors
I noticed these in /var/log/messages:
Mar 2 22:57:01 knew devd: Executing 'logger -p kern.notice -t ZFS 'vdev state changed, pool_guid=13361499957119293279 vdev_guid=17238785103866601718'' Mar 2 22:57:01 knew ZFS: vdev state changed, pool_guid=13361499957119293279 vdev_guid=17238785103866601718 Mar 2 22:57:01 knew devd: Executing 'logger -p kern.notice -t ZFS 'vdev state changed, pool_guid=13361499957119293279 vdev_guid=15857689873615724698'' Mar 2 22:57:01 knew ZFS: vdev state changed, pool_guid=13361499957119293279 vdev_guid=15857689873615724698
Let’s find the files:
[dan@knew:/mnt] $ cd /mnt/usr/local/etc/bacula/ [dan@knew:/mnt/usr/local/etc/bacula] $ ls bacula-barcodes bacula-dir.conf.sample bacula-fd.conf.sample bacula-sd.conf.sample bconsole.conf mtx-changer.conf bacula-barcodes.sample bacula-fd.conf bacula-sd.conf bacula-sd.conf~ bconsole.conf.sample [dan@knew:/mnt/usr/local/etc/bacula] $