1 files changed, 65 insertions, 0 deletions
diff --git a/doc/ceph-volume/lvm/zap.rst b/doc/ceph-volume/lvm/zap.rst
new file mode 100644
index 000000000..e737fc386
--- /dev/null
+++ b/doc/ceph-volume/lvm/zap.rst
@@ -0,0 +1,65 @@
+.. _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 file systems 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 logical volume, raw device or partition is being used for any ceph related
+          mount points 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
+
+Removing Devices
+----------------
+When zapping, and looking for full removal of the device (lv, vg, or partition)
+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.
+
+.. note:: Multiple devices can be accepted at once, to zap them all
+
+Zapping a raw device and destroying any vgs or lvs present::
+
+    ceph-volume lvm zap /dev/sdc --destroy
+
+
+This action can be performed on partitions, and logical volumes as well::
+
+    ceph-volume lvm zap /dev/sdc1 --destroy
+    ceph-volume lvm zap osd-vg/data-lv --destroy
+
+
+Finally, multiple devices can be detected if filtering by OSD ID and/or OSD
+FSID. Either identifier can be used or both can be used at the same time. This
+is useful in situations where multiple devices associated with a specific ID
+need to be purged. When using the FSID, the filtering is stricter, and might
+not match other (possibly invalid) devices associated to an ID.
+
+By ID only::
+
+    ceph-volume lvm zap --destroy --osd-id 1
+
+By FSID::
+
+    ceph-volume lvm zap --destroy --osd-fsid 2E8FBE58-0328-4E3B-BFB7-3CACE4E9A6CE
+
+By both::
+
+    ceph-volume lvm zap --destroy --osd-fsid 2E8FBE58-0328-4E3B-BFB7-3CACE4E9A6CE --osd-id 1
+
+
+.. warning:: If the systemd unit associated with the OSD ID to be zapped is
+             detected as running, the tool will refuse to zap until the daemon is stopped.