[Pacemaker] filesystem script block when umount a failed storage

[Mia Lueng]

Hi all:
    When I disconnect the connection between the server and a IBM
DS3512 SAS storage, and ocf script blocked when umount the  partition.
 So the resource relocation is failed.   How to resolve this problem?
thanks

OCF_RESKEY_device=/dev/sdc1 OCF_RESKEY_directory=/mnt bash  ./Filesystem stop


is blocked by umount operation and can not be killed