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Subject: [Bug 222078] Only the last option of "zfs mount -o" is honored
Date: Tue, 05 Sep 2017 18:26:06 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D222078

            Bug ID: 222078
           Summary: Only the last option of "zfs mount -o" is honored
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Many People
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs@FreeBSD.org
          Reporter: asomers@FreeBSD.org

The "-o" option to "zfs mount" can be used to pass a list of options to
nmount(2), like this: "zfs mount -o <opt>,<opt>,...,<opt>".  However, only =
the
last option actually gets sent:

# zfs mount -o nosuid,noatime foo/fs
# mount | grep foo.fs
foo/fs on /foo/fs (zfs, local, noatime, nfsv4acls)
# zfs unmount foo/fs
# zfs mount -o noatime,nosuid foo/fs
# mount | grep foo.fs
foo/fs on /foo/fs (zfs, local, nosuid, nfsv4acls)

Notice how in the first case, only "noatime" was set, and in the second cas=
e,
only "nosuid" was set.  Both options should've been set both times.

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