[CRIU] [PHAUL] P.Haul Lazy Migration Integration Issues

[Adrian Reber]

On Tue, Jul 17, 2018 at 10:02:25PM -0600, John Goen wrote:
> I've been working sporradically on the integration of lazy migration in the
> P.Haul project, and have run into a few snags that I haven't been able to
> reason through.
> 
> 1. No matter how I set the CRIU options in my RPC messages, none of the log
> files for the different phases (be it dump, restore, etc.) are ever
> populated with any messages, so I have had to do deeply hack-y workarounds
> to write logs to a file. Is there some setting I am missing for actually
> getting the logs to output properly?

Can you try to reproduce this behaviour with a minimal RPC client?

> 2. I have the lazy migration process executing successfully all the way up
> to the completion of the restore step, where my client then sends a final
> NOTIFY request, but is waiting forever for an acknowledgement by CRIU. I am
> unsure why this NOTIFY is getting ignored on the CRIU side, especially
> since the equivalent NOTIFY's for pre-copy migration are all resolving.

No immediate idea what might be going on, but it works in runc. Have you
compared your work to what runc does?

		Adrian