QA output created by 271
=== no dir ===
[filtered and sorted stderr]
__pmLogOpen: inspect file "TMP.0"
__pmLogOpen: inspect file "TMP.index"
__pmLogOpen: inspect file "TMP.log"
__pmLogOpen: inspect file "TMP.meta"
chkLabel: fd=<n1> vol=0 [magic=50052602 version=2 vol=0 pid=PID host=HOST]
__pmLogChangeVol: change to volume 0
chkLabel: fd=<n2> vol=-2 [magic=50052602 version=2 vol=-2 pid=PID host=HOST]
chkLabel: fd=<n3> vol=-1 [magic=50052602 version=2 vol=-1 pid=PID host=HOST]
__pmLogRead: fd=<n4> (peek) mode=back vol=0 posn=OFFSET @TIMESTAMP len=header+LEN+trailer
__pmLogSetTime(0) TIMESTAMP delta=0 at ti[0]@TIMESTAMP vol=0 posn=OFFSET serial=1
Log Label (Log Format Version 2)
Performance metrics from host HOST
  commencing DATE
  ending     DATE

=== empty dir ===
[filtered and sorted stderr]
__pmLogOpen: inspect file "TMP.0"
__pmLogOpen: inspect file "TMP.dir"
__pmLogOpen: inspect file "TMP.index"
__pmLogOpen: inspect file "TMP.log"
__pmLogOpen: inspect file "TMP.meta"
chkLabel: fd=<n1> vol=0 [magic=50052602 version=2 vol=0 pid=PID host=HOST]
__pmLogChangeVol: change to volume 0
chkLabel: fd=<n2> vol=-2 [magic=50052602 version=2 vol=-2 pid=PID host=HOST]
chkLabel: fd=<n3> vol=-1 [magic=50052602 version=2 vol=-1 pid=PID host=HOST]
__pmLogRead: fd=<n4> (peek) mode=back vol=0 posn=OFFSET @TIMESTAMP len=header+LEN+trailer
__pmLogSetTime(0) TIMESTAMP delta=0 at ti[0]@TIMESTAMP vol=0 posn=OFFSET serial=1
Log Label (Log Format Version 2)
Performance metrics from host HOST
  commencing DATE
  ending     DATE

=== non-empty dir ===
[filtered and sorted stderr]
__pmLogOpen: inspect file "TMP.0"
__pmLogOpen: inspect file "TMP.dir"
__pmLogOpen: inspect file "TMP.index"
__pmLogOpen: inspect file "TMP.log"
__pmLogOpen: inspect file "TMP.meta"
chkLabel: fd=<n1> vol=0 [magic=50052602 version=2 vol=0 pid=PID host=HOST]
__pmLogChangeVol: change to volume 0
chkLabel: fd=<n2> vol=-2 [magic=50052602 version=2 vol=-2 pid=PID host=HOST]
chkLabel: fd=<n3> vol=-1 [magic=50052602 version=2 vol=-1 pid=PID host=HOST]
__pmLogRead: fd=<n4> (peek) mode=back vol=0 posn=OFFSET @TIMESTAMP len=header+LEN+trailer
__pmLogSetTime(0) TIMESTAMP delta=0 at ti[0]@TIMESTAMP vol=0 posn=OFFSET serial=1
Log Label (Log Format Version 2)
Performance metrics from host HOST
  commencing DATE
  ending     DATE