`criu`: can't restore python `shell job` dumped from `VSCode` terminal

[herheliuk]

When trying to restore a shell job started in a VSCode terminal, I'm getting the following error:

127514: Error (criu/tty.c:1453): tty: No task found with sid 124454
Error (criu/cr-restore.c:2324): Restoring FAILED.

Although VSCode uses the same pseudo-terminal xterm-256color as my system, the issue only occurs inside VSCode.

For anyone facing the same problem: a simple workaround is to run a tmux session within the VSCode terminal.

[avagin]

Could you attach a full log here? It seems the tty is attached to an "external" session.

[herheliuk]

sudo criu dump -t 7279 -D criu_dumps/ -j -v4 -o vscode-dump-criu.log

sudo criu restore -D criu_dumps/ -j -v4 -o vscode-restore.log

I'm connected to my local VM in VSCode via SSH.

[herheliuk]

Surprisingly, if the process you're trying to dump was running under sudo, it dumps just fine.

[cris262007]

Checkpoint

sudo criu dump -t -D /path/to/checkpoint --shell-job -v4 -o dump.log

Restore

sudo criu restore -D /path/to/checkpoint --shell-job -v4 -o restore.log
sudo criu dump -t -D /checkpoint --shell-job --ext-unix-sk --tcp-established -v4 -o dump.log

sudo criu restore -D /checkpoint --shell-job --ext-unix-sk --tcp-established -v4 -o restore.log
unshare -p -m --fork --mount-proc criu restore -D /checkpoint --shell-job

sudo kill -9 <conflicting_PID>
sudo criu restore -D /checkpoint --shell-job