Unable to create md device with targetcli shared disk

Issue

• When attempting to create a mdadm array using a disk that is shared by targetcli, the following error is observed:

# mdadm --create /dev/md0 --metadata=1.0 --force --run --level=1 --chunk=256 --raid-devices=2 /dev/mapper/mpathcrk missing
mdadm: super1.x cannot open /dev/mapper/mpathcrk: Device or resource busy
mdadm: /dev/mapper/mpathcrk is not suitable for this array.
mdadm: create aborted

• The issue is not observed in RHEL 6.