+++ This bug was initially created as a clone of Bug #1845157 +++ Description of problem: When we execute a migration that has been previously run as "stage", the migration fails. Version-Release number of selected component (if applicable): CAM 1.2.2 stage SOURCE: OCP 3.11 AWS TARGET: OCP 4.4 AWS AWS S3 BUCKET How reproducible: Always Steps to Reproduce: 1. Create a namespace with a nginx application oc process -p NAMESPACE=bztest -f https://gitlab.cee.redhat.com/app-mig/cam-helper/raw/master/ocp-26160/nginx_with_pv_defaultsc_template.yml | oc create -f - 2. Feed the data oc -n bztest rsh $(oc get pods -n bztest -o jsonpath='{.items[0].metadata.name}') sh -c 'echo "<h1>HELLO WORLD</h1>" > /usr/share/nginx/html/index.html' 3. Execute a "stage" migration with this namespace 4. Execute a migration with this namespace Actual results: The stage migration will run OK, but the actual migration will fail, and this error will be displayed in the MigMigration resource status: conditions: - category: Advisory durable: true lastTransitionTime: "2020-06-08T12:59:10Z" message: '[1] Stage pods created.' status: "True" type: StagePodsCreated - category: Advisory durable: true lastTransitionTime: "2020-06-08T13:00:12Z" message: 'The migration has failed. See: Errors.' reason: QuiesceApplications status: "True" type: Failed errors: - 'Operation cannot be fulfilled on replicasets.extensions "nginx-deployment-557dd97bf8": the object has been modified; please apply your changes to the latest version and try again' itenerary: Failed Expected results: The migration should be executed without problems. Additional info: --- Additional comment from Sergio on 2020-06-08 16:28:15 UTC --- It doesn't seem to necessary to previously "stage" the migration. I could reproduce it consistently by staging migrations, but all of a sudden it stopped happening. Now it eventually happens in quiesced migrations, and I cannot consistently reproduce it.
*** Bug 1845998 has been marked as a duplicate of this bug. ***
Verified using MTC 1.3 This error has not happened in any of the testcases excuted, with our without stage migrations.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory (Migration Toolkit for Containers (MTC) Tool image release advisory 1.3.0), and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHBA-2020:4148