Ceph » ceph-volume

I'm on ceph version 13.2.2 (02899bfda814146b021136e9d8e80eba494e1126) mimic (stable)

I have tried to convert a ceph-disk bluestore to ceph-volume.

The cluster is called 'test'

# ceph-volume simple scan /dev/sdb1
Running command: /usr/sbin/cryptsetup status /dev/sdb1
 stderr: Device sdb1 not found
--> OSD 0 got scanned and metadata persisted to file: /etc/ceph/osd/0-4e01d64c-82d0-4bde-a9b4-db82cb4413c2.json
--> To take over managment of this scanned OSD, and disable ceph-disk and udev, run:
-->     ceph-volume simple activate 0 4e01d64c-82d0-4bde-a9b4-db82cb4413c2

# ceph-volume simple activate 0 4e01d64c-82d0-4bde-a9b4-db82cb4413c2
Running command: /bin/mount -v /dev/sdb1 /var/lib/ceph/osd/ceph-0
 stderr: mount: mount point /var/lib/ceph/osd/ceph-0 does not exist
-->  RuntimeError: command returned non-zero exit status: 32

Passing the cluster name on activate have no effect:

# ceph-volume --cluster test simple activate 0 4e01d64c-82d0-4bde-a9b4-db82cb4413c2
Running command: /bin/mount -v /dev/sdb1 /var/lib/ceph/osd/ceph-0
 stderr: mount: mount point /var/lib/ceph/osd/ceph-0 does not exist
-->  RuntimeError: command returned non-zero exit status: 32

The json must be recreated with the cluster name as parameter and then it can works

1. ceph-volume --cluster test simple scan /dev/sdb1 --force
   Running command: /usr/sbin/cryptsetup status /dev/sdb1
   stderr: Device sdb1 not found
   --> OSD 0 got scanned and metadata persisted to file: /etc/ceph/osd/0-4e01d64c-82d0-4bde-a9b4-db82cb4413c2.json
   --> To take over managment of this scanned OSD, and disable ceph-disk and udev, run:
   --> ceph-volume simple activate 0 4e01d64c-82d0-4bde-a9b4-db82cb4413c2

1. ceph-volume --cluster test simple activate 0 4e01d64c-82d0-4bde-a9b4-db82cb4413c2
   Running command: /bin/ln snf /dev/sdc2 /var/lib/ceph/osd/test-0/block.wal
   Running command: /bin/chown -R ceph:ceph /dev/sdc2
   Running command: /bin/ln -snf /dev/sdc1 /var/lib/ceph/osd/test-0/block.db
   Running command: /bin/chown -R ceph:ceph /dev/sdc1
   Running command: /bin/ln -snf /dev/sdb2 /var/lib/ceph/osd/test-0/block
   Running command: /bin/chown -R ceph:ceph /dev/sdb2
   Running command: /bin/systemctl enable ceph-volume@simple-0-4e01d64c-82d0-4bde-a9b4-db82cb4413c2
   stderr: Created symlink from /etc/systemd/system/multi-user.target.wants/ceph-volume@simple-0-4e01d64c-82d0-4bde-a9b4-db82cb4413c2.service to /usr/lib/systemd/system/ceph-volume@.service.
   Running command: /bin/ln -sf /dev/null /etc/systemd/system/ceph-disk@.service
   Running command: /bin/systemctl enable --runtime ceph-osd@0
   Running command: /bin/systemctl start ceph-osd@0
   -> Successfully activated OSD 0 with FSID 4e01d64c-82d0-4bde-a9b4-db82cb4413c2
   --> All ceph-disk systemd units have been disabled to prevent OSDs getting triggered by UDEV events

ceph-volume blindly put the clustername passed as parameter in json files generated.

ceph-volume should use the osd directory name to discover the cluster name automatically.