While removing ASM disk, getting: "Clearing disk header: oracleasm-write-label: Unable to open device "/dev/oracleasm/disks/<DISK>": Device or resource busy"

Solution Unverified - Updated -

Issue

  • Why can't delete ASM disk ?
  • oracleasm deletedisk command is getting failed.
  • While deleting ASM disk, getting below error:
# oracleasm deletedisk -v <DISK>
Clearing disk header: oracleasm-write-label: Unable to open device "/dev/oracleasm/disks/<DISK>": Device or resource busy
failed
Unable to clear disk "<DISK>"

Environment

  • Red Hat Enterprise Linux(RHEL) 6.8.
  • oracleasm.
  • Oracle RAC cluster.

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