Re: [ZFS] recover destroyed zpool - what are the available optio

This thread comes up on search engines, so it's appropriate to post new
results.

Current ZFS code is able to import the pool in question without complaint
(# zpool import -D -f -R /bsdr -N -F -X 12018916494219117471 rescue)
The pool is now named "rescue". Nice output with the history command:

#zpool history -il rescue
History for 'rescue':
2013-03-30.00:09:06 zpool create -f bsdr ad6p2 [user 0 (root) on
mfsbsd:global]
2013-03-30.00:09:06 [internal pool create txg:5] pool spa 28; zfs spa 28;
zpl 5; uts mfsbsd 8.2-RELEASE 802000 amd64 [user 0 (root) on mfsbsd]
2013-03-30.00:09:14 zpool destroy bsdr [user 0 (root) on mfsbsd:global]
2013-09-07.08:27:51 [txg:12] open pool version 28; software version 5000/5;
uts xxx.xxx
9.2-PRERELEASE 902503 amd64 [on xxx.xxx]
2013-09-07.08:27:51 [txg:14] import pool version 28; software version
5000/5; uts xxx.xxx 9.2-PRERELEASE 902503 amd64 [on xxx.xxx]
2013-09-07.08:27:56 zpool import -D -f -R /mnt -N -F -n -X
12018916494219117471 [user 0 (root) on xxx.xxx]
2013-09-07.08:29:57 zpool export bsdr [user 0 (root) on xxx.xxx]
2013-09-07.11:23:42 [txg:46] open pool version 28; software version 5000/5;
uts xxx.xxx
9.2-PRERELEASE 902503 amd64 [on xxx.xxx]
2013-09-07.11:23:43 [txg:48] import pool version 28; software version
5000/5; uts xxx.xxx 9.2-PRERELEASE 902503 amd64 [on xxx.xxx]
2013-09-07.11:23:48 zpool import -f -R /mnt -N -F -n -X bsdr [user 0 (root)
on xxx.xxx]
2013-09-07.11:25:12 zpool export bsdr [user 0 (root) on xxx.xxx]
2013-09-07.11:25:30 [txg:72] open pool version 28; software version 5000/5;
uts xxx.xxx
9.2-PRERELEASE 902503 amd64 [on xxx.xxx]
2013-09-07.11:25:30 [txg:74] import pool version 28; software version
5000/5; uts xxx.xxx 9.2-PRERELEASE 902503 amd64 [on xxx.xxx]
2013-09-07.11:25:36 zpool import -R /mnt bsdr [user 0 (root) on xxx.xxx]
2013-09-07.11:27:11 zpool destroy bsdr [user 0 (root) on xxx.xxx]
2014-06-14.22:28:26 [txg:104] open pool version 28; software version 5000/5;
uts xxx.xxx 11.0-CURRENT 1100022 amd64 [on xxx.xxx]
2014-06-14.22:28:31 [txg:106] import pool version 28; software version
5000/5; uts xxx.xxx
11.0-CURRENT 1100022 amd64 [on xxx.xxx]
2014-06-14.22:28:40 zpool import -D -f -R /bsdr -N -F -X
12018916494219117471 rescue [user 0
(root) on xxx.xxx]
2014-06-14.22:31:36 zpool export rescue [user 0 (root) on xxx.xxx]
2014-06-14.22:37:40 [txg:149] open pool version 28; software version 5000/5;
uts xxx.xxx 11.0-CURRENT 1100022 amd64 [on xxx.xxx]
2014-06-14.22:37:46 [txg:151] import pool version 28; software version
5000/5; uts xxx.xxx
11.0-CURRENT 1100022 amd64 [on xxx.xxx]
2014-06-14.22:37:55 zpool import rescue [user 0 (root) on xxx.xxx]
2014-06-14.22:38:26 zpool export rescue [user 0 (root) on xxx.xxx]
2014-06-14.22:39:34 [txg:167] open pool version 28; software version 5000/5;
uts xxx.xxx 11.0-CURRENT 1100022 amd64 [on xxx.xxx]
2014-06-14.22:39:40 [txg:169] import pool version 28; software version
5000/5; uts xxx.xxx
11.0-CURRENT 1100022 amd64 [on xxx.xxx]
2014-06-14.22:39:48 zpool import rescue [user 0 (root) on xxx.xxx]

PROBLEM: Unfortunately, even though zpool gets mounted 'ls' shows nothing.
Therefore, I need to rollback the ZFS history. I have found two options for
this:
1. Manual (using history output)
2. This script:
http://www.solarisinternals.com/wiki/index.php/ZFS_forensics_scrollback_script
There are many other resources, but the above seems to have boiled it down
to the essence. On the down side, I modified the script to only list its
findings rather than actually do the disk write and ran it. Two hours later
script + HDD is still working (I suppose that should be expected).

I really have no preference regarding methods other than what is the most
simple and direct one, but I choose to ask for input before trying it on the
HDD to be rescued.

Regards.

-----
FreeBSD-11-current_amd64_root-on-zfs_RadeonKMS
--
View this message in context: http://freebsd.1045724.n5.nabble.com/ZFS-recover-destroyed-zpool-what-are-the-available-options-tp5800299p5920849.html
Sent from the freebsd-questions mailing list archive at Nabble.com.
_______________________________________________
freebsd-questions@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/freebsd-questions
To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org"