Ceph » ceph-volume

See Rook issue https://github.com/rook/rook/issues/7940 for more full information.

Ceph bluestore disks can sometimes appear as though they have "phantom"
Atari (AHDI) partitions created on them when they don't in reality. This
is due to a series of bugs in the Linux kernel when it is built with
Atari support enabled. This behavior does not appear for raw mode OSDs on
partitions, only on disks.

Changing the on-disk format of Bluestore OSDs comes with
backwards-compatibility challenges, and fixing the issue in the Kernel
could be years before users get a fix. Working around the Kernel issue
in ceph-volume is therefore the best place to fix the issue for Ceph.

To work around the issue in Ceph volume, there are two behaviors that need
adjusted:

ceph-volume inventory should not report that a partition is
    available if the parent device is a BlueStore OSD

ceph-volume raw list should report parent disks if the disk is a
    BlueStore OSD and not report the disk's children, BUT it should still
    report children if the parent disk is not a BlueStore OSD