Andriy Gapon wrote on 07/28/2016 14:44:
I also would like to add, just in case, that I never set a BE's
mountpoint to '/'. I leave it at its default value like
/pond/ROOT/foobar. When the BE is active it would be mounted at /
anyway. And when it is not active and I want to access it for some
modifications, etc, then I can mount it simply with zfs mount and have
it at a non-interfering location. Ditto for its subordinate datasets.
I am saying this, because it seems that that is not how the FreeBSD
installer ("zfsboot") configures the default BE that it creates. I am
not sure what sysutils/beadm expects and configures in this regard. I
use my own custom script for doing beadm-like things.
beadm works with the following layout
NAME USED AVAIL REFER MOUNTPOINT
sys 10.8G 3.63G 96K none
sys/ROOT 1.45G 3.63G 96K none
sys/ROOT/b4pupg_20160516 8K 3.63G 606M /
sys/ROOT/b4pupg_20160523 8K 3.63G 621M /
sys/ROOT/b4pupg_20160531 8K 3.63G 643M /
sys/ROOT/b4pupg_20160616 8K 3.63G 649M /
sys/ROOT/b4pupg_20160627 8K 3.63G 655M /
sys/ROOT/b4supd_20160523 8K 3.63G 621M /
sys/ROOT/b4supd_20160728 8K 3.63G 664M /
sys/ROOT/default 1.45G 3.63G 663M /
sys/tmp 104K 3.63G 104K /tmp
sys/usr 7.42M 3.63G 96K none
sys/usr/home 6.72M 3.63G 6.72M /usr/home
sys/usr/obj 96K 3.63G 96K /usr/obj
sys/usr/ports 428K 3.63G 332K /usr/ports
sys/usr/ports/distfiles 96K 3.63G 96K /usr/ports/distfiles
sys/usr/src 96K 3.63G 96K /usr/src
sys/var 9.31G 3.63G 96K none
sys/var/audit 96K 3.63G 96K /var/audit
sys/var/log 9.31G 3.63G 9.31G /var/log
sys/var/tmp 152K 3.63G 152K /var/tmp
Note mountpoint "none" on sys/usr and sys/var. They are not mounted
intermediate directories, because /usr and /var should be part of the
BE, but some subdirectories should not be part of BE.
BEs under sys/ROOT have this properties
# zfs get all | grep mount
sys mounted no -
sys mountpoint none local
sys canmount on default
sys/ROOT mounted no -
sys/ROOT mountpoint none inherited from sys
sys/ROOT canmount on default
sys/ROOT/b4pupg_20160516 mounted no -
sys/ROOT/b4pupg_20160516 mountpoint / local
sys/ROOT/b4pupg_20160516 canmount off local
sys/ROOT/b4pupg_20160523 mounted no -
sys/ROOT/b4pupg_20160523 mountpoint / local
sys/ROOT/b4pupg_20160523 canmount off local
sys/ROOT/b4pupg_20160531 mounted no -
sys/ROOT/b4pupg_20160531 mountpoint / local
sys/ROOT/b4pupg_20160531 canmount off local
sys/ROOT/b4pupg_20160616 mounted no -
sys/ROOT/b4pupg_20160616 mountpoint / local
sys/ROOT/b4pupg_20160616 canmount off local
sys/ROOT/b4pupg_20160627 mounted no -
sys/ROOT/b4pupg_20160627 mountpoint / local
sys/ROOT/b4pupg_20160627 canmount off local
sys/ROOT/b4supd_20160523 mounted no -
sys/ROOT/b4supd_20160523 mountpoint / local
sys/ROOT/b4supd_20160523 canmount off local
sys/ROOT/b4supd_20160728 mounted no -
sys/ROOT/b4supd_20160728 mountpoint / local
sys/ROOT/b4supd_20160728 canmount off local
sys/ROOT/default mounted yes -
sys/ROOT/default mountpoint / local
sys/ROOT/default canmount on default
Miroslav Lachman
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