checkpoint log not available on failure

[hanwen-flow]

Feature request description

when checkpointing goes wrong, there is a message to inspect the dump.log file. However, the path to the file is not programmatically available, ie. in the dump below, the State field does not have CheckpointLog set.

2025/01/29 14:08:57 executing /usr/bin/sudo /home/hanwen/vc/containers/podman/bin/podman container checkpoint --compress=none --print-stats -k
2025-01-29T13:08:57.463757Z: CRIU checkpointing failed -52.  Please check CRIU logfile /var/lib/containers/storage/overlay-containers/1e0440ae9836892a528526a69b69c200130691c5443c2c05c4d432ef91e7be3d/userdata/dump.log
Error: `/usr/local/bin/crun checkpoint --image-path /var/lib/containers/storage/overlay-containers/1e0440ae9836892a528526a69b69c200130691c5443c2c05c4d432ef91e7be3d/userdata/checkpoint --work-path /var/lib/containers/storage/overlay-containers/1e0440ae9836892a528526a69b69c200130691c5443c2c05c4d432ef91e7be3d/userdata 1e0440ae9836892a528526a69b69c200130691c5443c2c05c4d432ef91e7be3d` failed: exit status 1
2025/01/29 14:08:57 executing /usr/bin/sudo /home/hanwen/vc/containers/podman/bin/podman container inspect restored-1738156132
2025/01/29 14:08:57 error snapshotting: exit status 125, log unavailable (exit status 1)
exit status 1
hanwen@hanwen-flow:~/vc/ci-experiments$ sudo podman inspect restored-1738156132
[
     {
          "Id": "1e0440ae9836892a528526a69b69c200130691c5443c2c05c4d432ef91e7be3d",
          "Created": "2025-01-29T14:08:53.166262242+01:00",
          "Path": "python3",
          "Args": [
               "-m",
               "http.server",
               "9000"
          ],
          "State": {
               "OciVersion": "1.2.0",
               "Status": "running",
               "Running": true,
               "Paused": false,
               "Restarting": false,
               "OOMKilled": false,
               "Dead": false,
               "Pid": 131166,
               "ConmonPid": 131160,
               "ExitCode": 0,
               "Error": "",
               "StartedAt": "2025-01-29T14:08:53.166262763+01:00",
               "FinishedAt": "0001-01-01T00:00:00Z",
               "Health": {
                    "Status": "",
                    "FailingStreak": 0,
                    "Log": null
               },
               "CgroupPath": "/machine.slice/libpod-1e0440ae9836892a528526a69b69c200130691c5443c2c05c4d432ef91e7be3d.scope",
               "CheckpointedAt": "0001-01-01T00:00:00Z",
               "RestoredAt": "2025-01-29T14:08:55.918890908+01:00",
               "CheckpointPath": "/var/lib/containers/storage/overlay-containers/1e0440ae9836892a528526a69b69c200130691c5443c2c05c4d432ef91e7be3d/userdata/checkpoint",
               "RestoreLog": "/var/lib/containers/storage/overlay-containers/1e0440ae9836892a528526a69b69c200130691c5443c2c05c4d432ef91e7be3d/userdata/restore.log",
               "Restored": true
          },

Suggest potential solution

my request is to set the CheckpointLog field, or even better, make the checkpoint log contents available as a return value of the checkpoint operation, eg. by inserting it into entities.CheckpointReport or provide a --log option.

Have you considered any alternatives?

alternative: the log is generated in filepath.Join(inspect.StaticDir, "dump.log")

Additional context

Add any other context or screenshots about the feature request here.