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Subject: [Bug 221188] zfs: bin/chmod/chmod_test:v_flag fails on ZFS, not UFS
 (ZFS updates mode for files unnecessarily)
Date: Wed, 02 Aug 2017 20:54:32 +0000
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D221188

            Bug ID: 221188
           Summary: zfs: bin/chmod/chmod_test:v_flag fails on ZFS, not UFS
                    (ZFS updates mode for files unnecessarily)
           Product: Base System
           Version: CURRENT
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: freebsd-bugs@FreeBSD.org
          Reporter: ngie@FreeBSD.org

For some odd reason it's updating the mode for foo unnecessarily on my
ZFS-based $TMPDIR:

$ sudo kyua debug -k /usr/tests/Kyuafile bin/chmod/chmod_test:v_flag=20=20=
=20=20=20=20=20=20=20=20=20=20
Executing command [ truncate -s 0 foo bar ]
Executing command [ chmod 0600 foo ]
Executing command [ chmod 0750 bar ]
Executing command [ chmod -v 0600 foo bar ]
Fail: stdout does not match expected value
--- /tmp/kyua.1j9TcJ/2/work/atf-check.LpX8Mt    2017-08-02 19:51:34.1530450=
00
+0000
+++ /tmp/kyua.1j9TcJ/2/work/check.p4eLMg/stdout 2017-08-02 19:51:34.1525450=
00
+0000
@@ -1 +1,2 @@
+foo
 bar
Files left in work directory after failure: bar, foo
$ df /tmp/
Filesystem 1K-blocks  Used     Avail Capacity  Mounted on
root/tmp   116719335 37599 116681736     0%    /tmp
$ zfs get atime root/tmp=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20
NAME      PROPERTY  VALUE  SOURCE
root/tmp  atime     on     default
$ mount -p | grep root/tmp=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=20=
=20=20=20=20=20=20=20=20=20=20=20=20=20
root/tmp                /tmp                    zfs     rw,nfsv4acls    0 0

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