[CRIU] Checkpointing a singularity container

[Adrian Reber]

I just tried to checkpoint a singularity container with busybox and a
simple shell loop and it fails.

This is how I start the container:

mkdir /tmp/test1

/home/singularity-root/bin/singularity bootstrap /tmp/test1 examples/busybox/Singularity

/home/singularity-root/bin/singularity run -C -B /tmp/share:/test /tmp/test1/

criu dump -t 21985 -vvvv
[...]
(00.001459) Add pid ns 8 pid 21989
(00.001475) Error (criu/namespaces.c:431): Can't dump nested ipc namespace for 21989
(00.001480) Error (criu/namespaces.c:773): Can't make ipcns id
(00.001488) Unlock network
(00.001498) Unfreezing tasks into 1
(00.001502) 	Unseizing 21985 into 1
(00.001508) 	Unseizing 21989 into 1
(00.001512) 	Unseizing 22002 into 1
(00.001526) Error (criu/cr-dump.c:1800): Dumping FAILED.

Full log at:

https://lisas.de/~adrian/dump-singularity.log

		Adrian