Zonecfg: removing a resource

I just noticed that there aren't a whole lot of examples of removing a resource from a zone to be had in the vast caches of Google at the moment. It's pretty simple once you understand the zonecfg syntax. Of course, just about everything in UNIX is simple once you know how to do it!

First, we need to fire up zonecfg and look at the specifics of how our zone is configured:

cgh@testbox$ pfexec zonecfg -z testzone
zonecfg:testzone> info
zonename: testzone
zonepath: /export/zones/testzone
autoboot: true
pool:
limitpriv:
inherit-pkg-dir:
dir: /lib
inherit-pkg-dir:
dir: /platform
inherit-pkg-dir:
dir: /sbin
inherit-pkg-dir:
dir: /usr
fs:
dir: /myapp/u01
special: /dev/dsk/c2t5006048ACC36D646d138s0
raw: /dev/rdsk/c2t5006048ACC36D646d138s0
type: ufs
options: []
net:
address: 192.168.1.1
physical: e1000g0
zonecfg:testzone>


In this case, the file system /myapp/u01 has a problem and is preventing the zone from rebooting. In order to remove it we need to use the remove syntax, which requires enough parameters to uniquely identify the resource we want removed. In this case, the dir setting of /myapp/u01 should be sufficient.

zonecfg:usa0300uz0002> remove fs dir=/uv1234/u01


A quick repeat of the info command should now display that the file system is not part of this configuration, and indeed it does.

zonecfg:testzone> info
zonename: testzone
zonepath: /export/zones/testzone
autoboot: true
pool:
limitpriv:
inherit-pkg-dir:
dir: /lib
inherit-pkg-dir:
dir: /platform
inherit-pkg-dir:
dir: /sbin
inherit-pkg-dir:
dir: /usr
net:
address: 192.168.1.1
physical: e1000g0


And funally, we commit the changes using the commit command. A quick call to zoneadm, and a reboot is issued, allowing our zone to successfuly reboot.