Sunday Nov 02, 2008

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: ]

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