[CRIU] criu [PATCH] post-setup-namespaces

[Igor Sukhih]

On 01/22/2016 05:21 AM, Andrew Vagin wrote:
> On Tue, Jan 19, 2016 at 03:10:12PM +0300, Igor Sukhih wrote:
>> Introduce post-setup-namespaces action script
>>
>> It needed to have possibility to run cutom script after mount
>> namespace is configured
>>
>
> What are you going to do in this script?
>
>
commit 3544439fe0b210eb96f4d3a9c3f799c4d8602424
Author: Igor Sukhih <igor at parallels.com>
Date:   Tue Jan 19 17:59:03 2016 +0300

     CT restore failed if ploop device minor is changed #PSBM-42672

     The restore problem rised because device layer in CT is not 
virtualized.
     ploop device name is autogenerated and on CT resume can be changed but
     in criu image remains old information.

     This patch is workarund the problem by creating device:minor mapping

     On CT suspend:
     * create mapping in the /dev directory by creating symlink
     uuid -> /dev/pllopN

     On CT restore:
     * read old device name from uuid
     * recreate old device with new major:minor

     Signed-off-by: Igor Sukhih <igor at parallels.com>