oc-mirror is failing to render catalog image when pushing to registry from file in fully disconnected OpenShift environment.

Environment

• Red Hat OpenShift Container Platform 4
• Disconnected Environment

Issue

• While mirroring the operator catalog to the registry, the oc-mirror fails to render the catalog image when the 'archiveSize' is set in the ImageSetConfiguration.

Resolution

• Red Hat is aware of this issue and it is currently tracked in This content is not included.Bug
• Please open a ticket for more information on this.
• This issue has been fixed and the patch is included by default in RHOCP 4.16.0 Errata and was backported in the RHOCP 4.15.0 Errata

Root Cause

• This is happening due to a bug in oc-mirror.

Diagnostic Steps

• Check the error logs while running the command 'oc-mirror --from docker://:8443 --dest-skip-tls'

oc-mirror fails to render image after pushing to registry from file. The following error message is displayed:
info: Mirroring completed in 9.9s (52.78MB/s)
Wrote release signatures to oc-mirror-workspace/results-1690136811
Rendering catalog image "<local registry>8443/redhat/redhat-operator-index:v4.11" with file-based catalog
error: error rebuilding catalog images from file-based catalogs: error creating OCI layout: stat oc-mirror-workspace/images.2556478487/catalogs/registry.redhat.io/redhat/redhat-operator-index/v4.11/layout/index.json: no such file or directory

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