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Chapter 6. OSD removal tool

OpenShift Data Foundation provides a tool to automate the process of object storage device (OSD) removal. This tool helps to avoid the possible data loss while removing OSDs.

Prerequisites

Procedure

  1. Identify the OSD that needs to be removed. The OSD that needs removal is in CrashLoopBackOff or Error state. 

    $ oc get -n openshift-storage pods -l app=rook-ceph-osd -o wide
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    Example output: 

    rook-ceph-osd-0-6d77d6c7c6-m8xj6    0/1    CrashLoopBackOff    0    24h   10.129.0.16   compute-2   <none>           <none>
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  2. Run the following command to remove OSD 0: 

    $ odf purge-osd 0
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  3. [Optional] If removal of the OSD affects placement group (PG) status, enter yes-force-destroy-osd.
  4. Verify that the last line of the command output contains cephosd: completed removal of OSD 0.

  5. Verify the corresponding deployment is removed: 

    $ oc get deployment rook-ceph-osd-0
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