https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=271692
Bug ID: 271692
Summary: zfs inherit always behaves as if the -S flag was given
Product: Base System
Version: 12.4-RELEASE
Hardware: Any
OS: Any
Status: New
Severity: Affects Only Me
Priority: ---
Component: bin
Assignee: b...@freebsd.org
Reporter: d8zne...@aon.at
Scenario:
- FreeBSD 12.4 latest patches
- The following commands have been issued:
[0]# zfs get canmount coconut.3/12/usr/local.OLD
NAME PROPERTY VALUE SOURCE
coconut.3/12/usr/local.OLD canmount off local
[0]# zfs get mountpoint coconut.3/12/usr/local.OLD
NAME PROPERTY VALUE SOURCE
coconut.3/12/usr/local.OLD mountpoint /usr/local.OLD local
[0]# zfs inherit mountpoint coconut.3/12/usr/local.OLD
[0]# zfs get mountpoint coconut.3/12/usr/local.OLD
NAME PROPERTY VALUE SOURCE
coconut.3/12/usr/local.OLD mountpoint /usr/local received
[0]# zfs inherit mountpoint coconut.3/12/usr/local.OLD
[0]# zfs get mountpoint coconut.3/12/usr/local.OLD
NAME PROPERTY VALUE SOURCE
coconut.3/12/usr/local.OLD mountpoint /usr/local received
[0]# zfs set mountpoint=/usr/local.OLD coconut.3/12/usr/local.OLD
[0]# zfs get mountpoint coconut.3/12/usr/local.OLD
NAME PROPERTY VALUE SOURCE
coconut.3/12/usr/local.OLD mountpoint /usr/local.OLD local
[0]# zfs inherit mountpoint coconut.3/12/usr/local.OLD
[0]# zfs get mountpoint coconut.3/12/usr/local.OLD
NAME PROPERTY VALUE SOURCE
coconut.3/12/usr/local.OLD mountpoint /usr/local received
[0]# zfs inherit -S mountpoint coconut.3/12/usr/local.OLD
[0]# zfs get mountpoint coconut.3/12/usr/local.OLD
NAME PROPERTY VALUE SOURCE
coconut.3/12/usr/local.OLD mountpoint /usr/local received
[0]# zfs set mountpoint=/usr/local.OLD coconut.3/12/usr/local.OLD
[0]# zfs get mountpoint coconut.3/12/usr/local.OLD
NAME PROPERTY VALUE SOURCE
coconut.3/12/usr/local.OLD mountpoint /usr/local.OLD local
[0]# zfs get mountpoint coconut.3/12/usr
NAME PROPERTY VALUE SOURCE
coconut.3/12/usr mountpoint /usr inherited from coconut.3/12
[0]#
Result (see the scenario above):
- The mountpoint of coconut.3/12/usr/local.OLD is never set to its inherited
default of /usr/local.OLD, even if no -S flag is given to the "zfs inherit"
command. In fact, "zfs inherit" behaves as if the -S flag is always specified.
Expected result:
- After "zfs inherit mountpoint coconut.3/12/usr/local.OLD", the mountpoint
should be set to the parent's mountpoint plus the filesystem name, in this case
to /usr/local.OLD.
See also
https://forums.freebsd.org/threads/zfs-inherit-mountpoint-after-zfs-rename-not-working.59965/
where the second post describes exactly the same issue.
-- Martin
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