>>9804
Showed errors:
># criu dump --shell-job --tcp-established -t 27184
>Error (criu/file-lock.c:110): Some file locks are hold by dumping tasks! You can try --file-locks to dump them.
>Error (criu/cr-dump.c:1781): Dumping FAILED.
># # where PID 27184 = "/home/ubuntu/gs-venv/bin/python /home/ubuntu/gs-venv/bin/grab-site https://www.canterlot.com/"

Showed zero errors, but it killed the grab-site process:
># criu dump --shell-job --tcp-established --file-locks -t 27184
># # made a 56-MB dump (find PID by "ps aux | grep grab-site | tail -n2")

Restoration failed (moved to "/z9/warc/012/criu/new2/"):
># criu restore --shell-job --tcp-established
>Error (criu/cr-restore.c:1480): 27184 killed by signal 11: Segmentation fault
>Error (criu/cr-restore.c:2447): Restoring FAILED.
># # so try without --file-locks and maybe it somehow still works?
># # same "Dumping FAILED" error with "sudo criu dump --shell-job --tcp-established -t 29094"