ceph/doc/ceph-volume/lvm/zap.rst
Andrew Schoen d4639ac116 ceph-volume: when zapping unmount osd directories
If you zap an lv, device or partition and it's currently mounted as a
ceph osd directory then it will be unmounted so the zap can complete.

Signed-off-by: Andrew Schoen <aschoen@redhat.com>
2018-02-13 16:58:05 -06:00

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.. _ceph-volume-lvm-zap:
``zap``
=======
This subcommand is used to zap lvs, partitions or raw devices that have been used
by ceph OSDs so that they may be reused. If given a path to a logical
volume it must be in the format of vg/lv. Any filesystems present
on the given lv or partition will be removed and all data will be purged.
.. note:: The lv or partition will be kept intact.
.. note:: If the logicial volume, raw device or partition is being used for any ceph related
mountpoints they will be unmounted.
Zapping a logical volume::
ceph-volume lvm zap {vg name/lv name}
Zapping a partition::
ceph-volume lvm zap /dev/sdc1
If you are zapping a raw device or partition and would like any vgs or lvs created
from that device removed use the ``--destroy`` flag. A common use case is to simply
deploy OSDs using a whole raw device. If you do so and then wish to reuse that device for
another OSD you must use the ``--destroy`` flag when zapping so that the vgs and lvs that
ceph-volume created on the raw device will be removed.
Zapping a raw device and destroying any vgs or lvs present::
ceph-volume lvm zap /dev/sdc --destroy