[CRIU] CRIU built without CONFIG_COMPAT - can't C/R compatible tasks

[Dmitry Safonov]

Hi Damodharan,

On 12/21/19 11:48 PM, Damodharan Mohanrajan wrote:
> Dear team,
>         I got an error message when i ran '$criu check --all' command. I
> haveincluded the details as below. Please help me with this. I'm struck
> on my university thesis and have to finish and submit by next week. A
> great thanks to you for anyhelp you do. I'm ready to give any further
> details from my side.
> 
> Command: $ sudo criu check --all
> 
> Error:
> Warn  (criu/cr-check.c:850): Dirty tracking is OFF. Memory snapshot will
> not work.
> Warn  (criu/cr-check.c:1231): Do not have API to map vDSO - will use
> mremap() to restore vDSO
> Warn  (criu/cr-check.c:1199): CRIU built without CONFIG_COMPAT - can't
> C/R compatible tasks
> Looks good but some kernel features are missing
> which, depending on your process tree, may cause
> dump or restore failure.

As Radostin pointed, those are optional features.

> 
> Details are below:
> 
> My device: Raspberry pi-4 (4GB version) (Arm64 based)

The message you see means that CRIU doesn't support aarch32 applications
C/R on arm64.

Thanks,
          Dmitry