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  1. OpenShift Bugs
  2. OCPBUGS-7086

opm fails to serve FBC if cachedir not provided


    • Icon: Bug Bug
    • Resolution: Done
    • Icon: Major Major
    • 4.12.z
    • 4.12
    • Operator SDK
    • ODSK 231, OSDK 232
    • 2
    • Rejected
    • False
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      Description of problem:

      opm serve fails with message:
      Error: compute digest: compute hash: write tar: stat .: os: DirFS with empty root

      Version-Release number of selected component (if applicable):


      How reproducible:


      Steps to Reproduce:

      (The easiest reproducer involves serving an empty catalog)

      1. mkdir /tmp/catalog
      2. using Dockerfile /tmp/catalog.Dockerfile based on 4.12 docs (https://access.redhat.com/documentation/en-us/openshift_container_platform/4.12/html-single/operators/index#olm-creating-fb-catalog-image_olm-managing-custom-catalogs
      # The base image is expected to contain
      # /bin/opm (with a serve subcommand) and /bin/grpc_health_probe
      FROM registry.redhat.io/openshift4/ose-operator-registry:v4.12
      # Configure the entrypoint and command
      ENTRYPOINT ["/bin/opm"]
      CMD ["serve", "/configs"]
      # Copy declarative config root into image at /configs
      ADD catalog /configs
      # Set DC-specific label for the location of the DC root directory
      # in the image
      LABEL operators.operatorframework.io.index.configs.v1=/configs
      3. build the image `cd /tmp/ && docker build -f catalog.Dockerfile .`
      4. execute an instance of the container in docker/podman `docker run --name cat-run [image-file]`
      5. error

      Using a dockerfile generated from opm (`opm generate dockerfile [dir]`) works, but includes precache and cachedir options to opm.


      Actual results:

      Error: compute digest: compute hash: write tar: stat .: os: DirFS with empty root

      Expected results:

      opm generates cache in default /tmp/cache location and serves without error

      Additional info:



            rh-ee-jkeister Jordan Keister
            rh-ee-jkeister Jordan Keister
            Xia Zhao Xia Zhao
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