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
逻辑卷或分区会保持原样。
Note
如果逻辑卷、原始设备或分区当前还挂载在 ceph 相关的挂载点下，它们将被卸载。
zap 一个逻辑卷：
ceph-volume lvm zap {vg name/lv name}
zap 一个分区：
ceph-volume lvm zap /dev/sdc1
删除设备¶
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.
