Re: [PATCH RFC 0/3] Add checkpoint/restore support to LXC using CRIU

On Sat, Feb 27, 2021 at 01:14:29AM -0300, Julio Faracco wrote: > Hi guys, > Hi and sorry for not replying earlier.

> I marked this series as RFC to discuss some points. I'm interested in > enhancing this specific part of LXC. So, some questions that I would > like to hear as a feedback from community: > 1. I decided to use a tar to compress all CRIU img files into a single > file. Any other suggestions? > 2. If no is the answer to question above, is there a consensus on > preferring to use command line calls or libraries? I would like to use > libtar for instance. I personally think that this approach is ugly. > Not sure if I'm able to do that. The same for CRIU. I remember that for CRIU, back when we were trying to do that, the issue was that the commands were not atomic, did not properly report error messages and maybe something more along the lines.  Either there was no library interface or it was not MT-safe, basically there were couple of issues like that which we were not able to deal with. I do not really remember all the details.  Maybe Michal does as I think he suggested the idea back then.  I Cc'd him.  In the worst scenario we will need to figure this all out again ;)