Impossible to delete existing workspace

[vzhukovs]

When you're trying to remove a workspace which might be created before acceptance update you may obtain internal server error from workspace service with the message: Transaction "rolled back" because transaction was set to RollbackOnly.

Reproduction Steps:

1. Try to remove a workspace via workspace service

Expected behavior:

Workspace successfully removed

Observed behavior:

Internal server error occurred:
Request URL: http://a9.codenvy-stg.com/api/workspace/workspaceks6z6nb990iuny81
Request Method: DELETE
Status Code: 500 Internal Server Error
Message: Transaction "rolled back" because transaction was set to RollbackOnly.

Additional information:

• Problem started happening recently, didn't happen in an older version of Che: [No]
• Problem can be reliably reproduced, doesn't happen randomly: [No]

[slemeur]

It seems that this problem is happening with old workspaces only - not the one that have just been created.

[slemeur]

can reproduce it on a12

[voievodin]

In a9 logs:

2016-12-13 15:18:58,828[nio-8080-exec-2]  [ERROR] [c.p.d.m.DockerInstanceProvider 168]  - An error occurred while deleting snapshot with url: http://a9.codenvy-stg.com:5000/v2/machine_snapshot_5jsm02uu9flfyrul/manifests/sha256:8810671bc340ce3c290011f54a44260cb2f2e05c343183016c4c93d4f078f056
Error stream: {"errors":[{"code":"MANIFEST_UNKNOWN","message":"manifest unknown"}]}

2016-12-13 15:18:58,836[nio-8080-exec-2]  [ERROR] [o.e.c.a.w.s.WorkspaceManager 568]    - Internal server error occurs. Can't remove snapshot
org.eclipse.che.api.machine.server.exception.SnapshotException: Internal server error occurs. Can't remove snapshot
        at org.eclipse.che.plugin.docker.machine.DockerInstanceProvider.removeInstanceSnapshot(DockerInstanceProvider.java:171) ~[che-plugin-docker-machine-5.0.0-M9-SNAPSHOT.jar:5.0.0-M9-SNAPSHOT]
        at org.eclipse.che.api.environment.server.CheEnvironmentEngine.removeSnapshot(CheEnvironmentEngine.java:528) ~[che-core-api-workspace-5.0.0-M9-SNAPSHOT.jar:5.0.0-M9-SNAPSHOT]
        at org.eclipse.che.api.workspace.server.WorkspaceRuntimes.removeSnapshot(WorkspaceRuntimes.java:494) ~[che-core-api-workspace-5.0.0-M9-SNAPSHOT.jar:5.0.0-M9-SNAPSHOT]
        at org.eclipse.che.api.workspace.server.WorkspaceManager.removeSnapshots(WorkspaceManager.java:565) ~[che-core-api-workspace-5.0.0-M9-SNAPSHOT.jar:5.0.0-M9-SNAPSHOT]
        at org.eclipse.che.api.workspace.server.WorkspaceService.delete(WorkspaceService.java:285) [che-core-api-workspace-5.0.0-M9-SNAPSHOT.jar:5.0.0-M9-SNAPSHOT]
        at sun.reflect.GeneratedMethodAccessor525.invoke(Unknown Source) ~[na:na]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_45]
        at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_45]

It seems that this is the same issue to codenvy/codenvy#1334

As i can see @vzhukovskii uses a9 and you are using a12, so it is rather codenvy issue than che.