Zapping data

The zap subcommand removes all data and file systems from a logical volume or partition. Use the zap subcommand to zap logical volumes, partitions, or raw devices that are used by Ceph OSDs for reuse. Any file system present on the given logical volume or partition are removed and all data is purged.

Optionally, you can use the --destroy flag for complete removal of a logical volume, partition, or the physical device.

Prerequisites

  • A running IBM Storage Ceph cluster.

  • Root-level access to the Ceph OSD node.

Procedure

  • Zap the logical volume:

    Syntax 

    ceph-volume lvm zap VOLUME_GROUP_NAME/LOGICAL_VOLUME_NAME [--destroy]

    Example 

    [ceph: root@host01 /]# ceph-volume lvm zap osd-vg/data-lv

  • Zap the partition:

    Syntax 

    ceph-volume lvm zap DEVICE_PATH_PARTITION [--destroy]

    Example 

    [ceph: root@host01 /]# ceph-volume lvm zap /dev/sdc1

  • Zap the raw device:

    Syntax 

    ceph-volume lvm zap DEVICE_PATH --destroy

    Example 

    [ceph: root@host01 /]# ceph-volume lvm zap /dev/sdc --destroy

  • Purge multiple devices with the OSD ID:

    Syntax 

    ceph-volume lvm zap --destroy --osd-id OSD_ID

    Example 

    [ceph: root@host01 /]# ceph-volume lvm zap --destroy --osd-id 16
    Note: All the relative devices are zapped.

  • Purge OSDs with the FSID:

    Syntax 

    ceph-volume lvm zap --destroy --osd-fsid OSD_FSID

    Example 

    [ceph: root@host01 /]# ceph-volume lvm zap --destroy --osd-fsid 65d7b6b1-e41a-4a3c-b363-83ade63cb32b
    Note: All the relative devices are zapped.