2008.next: Recovering a dropped data pool

As you update your pkg(5)-based system to build 100a, you might see a message on console during startup. It will look something like

WARNING: pool 'zeta1' could not be loaded as it was last accessed by
another system (host: rosseau hostid: 0x581d45e). See:
http://www.sun.com/msg/ZFS-8000-EY

and in /var/adm/messages, you'll find it again:

Oct 27 14:55:21 rosseau zfs: [ID 427000 kern.warning] WARNING: pool
'zeta1' could not be loaded as it was last accessed by another system
(host: rosseau hostid: 0x581d45e). See:
http://www.sun.com/msg/ZFS-8000-EY

zeta1 is a data pool on my system—the boot pool, rpool, upgraded normally—and recent changes in the hostid implementation mean that we have to import (or reimport) any non-boot pools on the system. That is,

$ pfexec zpool import -f zeta1

and our zeta1-based filesystems are again online.

[ T: ]

Comments:

Worth noting that after upgrading from _99 to _100a, it's possible that your root pool will refuse to mount if you then try and boot the _99 BE again.

The workaround (which Bart told me this morning), is to boot _100 again, then boot _99 again, at which point it works.

Posted by richlowe on November 02, 2008 at 03:40 PM PST #

Good to know, Rich--thanks!

Posted by Stephen on November 03, 2008 at 04:14 AM PST #

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