[CRIU] Error in dump parent process, with child process in different namespace

[Pavel Emelyanov]

On 07/30/2015 06:57 PM, Hui Kang wrote:
> Hi,

> (00.004681) Error (namespaces.c:247): Can't dump nested pid namespace for 28080

Here's the error. Your task 28078 lives in one pid namespace and its child
28080 -- in another. This case is not yet supported by CRIU, all tasks in
a tree should live in the same pid namespace.

To support multiple pid namespaces we need to resolve tasks' pids in all of
them, collect this info in the image files and on restore properly clone()
them into respective pid namespaces.

-- Pavel

> (00.004713) Error (namespaces.c:443): Can't make pidns id
> (00.004742) Unlock network
> (00.004772) Unfreezing tasks into 1
> (00.004799)     Unseizing 28078 into 1
> (00.004911)     Unseizing 28080 into 1
> (00.005083) Error (cr-dump.c:1957): Dumping FAILED.
> 
> Can anyone help? Thanks in advance.
> 
> - Hui
> 
> 
> 
> 
> _______________________________________________
> CRIU mailing list
> CRIU at openvz.org
> https://lists.openvz.org/mailman/listinfo/criu
>