pvcreate on linear md device results in "sysfs attr level not in expected format"

Solution Verified - Updated -

Issue

  • The following command completes ok but issues an error message.  Can this message be safely ignored or is it an error?
    # mdadm -C --rounding=32 -l linear -n 2 /dev/md0 /dev/sd[bc]
# pvcreate /dev/md0
  /dev/md0 sysfs attr level not in expected format: linear
  Physical volume "/dev/md0" successfully created

Environment

  • Red Hat Enterprise Linux 5 or 6

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