Date: Thu, 27 Jan 2022 19:51:00 -0800 From: David Wolfskill <david@catwhisker.org> To: fs@freebsd.org Subject: ZFS: How may I get rid of a zpool that has no extant devices? Message-ID: <YfNoJBT%2BxyL54ozb@albert.catwhisker.org>
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TL;DR: I had created a "zroot" zpool in an attempt to get a new machine
booting from ZFS. I gave up on that (for reasons that aren't important
for this discussion), sliced and partitioned the first drive (ada0),
then madea raidz1 pool of the remaining 5 drives; the zpool is called
"tank" (which is mostly a poudriere scratchpad).
Now "tank" seems fine, but "zroot" shows up as (allegedly) "importable"
but UNAVAIL; anything I try to do with it generates some form of
"no such pool" whine.
How may I make "zroot" disappear?
root@freetest:/boot # zfs list
NAME USED AVAIL REFER MOUNTPOINT
tank 30.6G 3.57T 12.6G /tank
tank/poudriere 17.8G 3.57T 17.8G /tank/poudriere
root@freetest:/boot # zpool status
pool: tank
state: ONLINE
scan: none requested
config:
NAME STATE READ WRITE CKSUM
tank ONLINE 0 0 0
raidz1-0 ONLINE 0 0 0
ada1 ONLINE 0 0 0
ada2 ONLINE 0 0 0
ada3 ONLINE 0 0 0
ada4 ONLINE 0 0 0
ada5 ONLINE 0 0 0
errors: No known data errors
root@freetest:/boot # zpool import
pool: zroot
id: 16397883415809375312
state: UNAVAIL
status: One or more devices are missing from the system.
action: The pool cannot be imported. Attach the missing
devices and try again.
see: http://illumos.org/msg/ZFS-8000-3C
config:
zroot UNAVAIL insufficient replicas
raidz1-0 UNAVAIL insufficient replicas
6484790396862720571 UNAVAIL cannot open
14408271149544307738 UNAVAIL cannot open
2973420537959971822 UNAVAIL cannot open
17206168682675537956 UNAVAIL cannot open
16237056652067533889 UNAVAIL cannot open
root@freetest:/boot # zpool destroy zroot=20
cannot open 'zroot': no such pool
I am willing to back up tank, destroy the whole mess, and restore it;
the machine is still in its 'shakedown" phase, and is destined to become
my new build machine (so it should spend most of its time powered off).
That said, if there's a (sane) way to clean this up without the backup/
restore, I'd appreciate knowing about it.
Thanks!
Peace,
david
--=20
David H. Wolfskill david@catwhisker.org
Republican Senators had two chances to hold Donald Trump accountable
for his malfeasance in office during his term -- and utterly failed.
See https://www.catwhisker.org/~david/publickey.gpg for my public key.
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