Trying to create the Block and Block.DB devices for BlueStore. Within the 
cephadm shell able to run the vgcreate but get the following errors and we 
cannot see the vg device in /dev so doesn't seem to actually create the vg, but 
vgs within the cephadm shell shows it, but vgs at the o/s level does not. FYI - 
SE Linux is disabled.

stdout: Physical volume "/dev/sda" successfully created.

Not creating system devices file due to existing VGs.

stdout: Volume group "ceph-b80b7206-0c2e-4770-9895-51077b1d59d4" successfully 
created

Running command: lvcreate --yes -l 5245439 -n 
osd-block-b992b707-c77a-412d-9286-3b3ec1d8b3e9 
ceph-b80b7206-0c2e-4770-9895-51077b1d59d4

stderr: 
/dev/ceph-b80b7206-0c2e-4770-9895-51077b1d59d4/osd-block-b992b707-c77a-412d-9286-3b3ec1d8b3e9:
 not found: device not cleared

Aborting. Failed to wipe start of new LV.

--> Was unable to complete a new OSD, will rollback changes

Running command: /usr/bin/ceph --cluster ceph --name client.bootstrap-osd 
--keyring /var/lib/ceph/bootstrap-osd/ceph.keyring osd purge-new osd.0 
--yes-i-really-mean-it

stderr: purged osd.0

--> RuntimeError: Unable to find any LV for zapping OSD: 0

[ceph: root@ritcephstrdata09 /]# lvcreate --yes -l 5245439 -n 
osd-block-b992b707-c77a-412d-9286-3b3ec1d8b3e9 
ceph-b80b7206-0c2e-4770-9895-51077b1d59d4

  
/dev/ceph-b80b7206-0c2e-4770-9895-51077b1d59d4/osd-block-b992b707-c77a-412d-9286-3b3ec1d8b3e9:
 not found: device not cleared

Aborting. Failed to wipe start of new LV.



Any thoughts?


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