[CRIU] [PATCH v4 00/17] AutoFS mounts migration support

[Stanislav Kinsburskiy]

Hi,

This series doesn't require any kernel changes (except pipe inode in 
mount options).
All the tests CRIU internal have passed with these changes.
Any update on reviewing it?

07.01.2016 17:09, Stanislav Kinsburskiy пишет:
> This patch set adds suport for AutoFS mount migration, including:
> 1) Direct mounts
> 2) Indirect mounts
> 3) Catatonic mounts
>
> Note: systemd AutoFS logic breaks with this migration, because device value of
> new mount differs to the one, which systemd collected, when it was created the
> mount. Because of it systemd ignors any requests from kernel.
>
> v4: this version has significant changes in comparison to previous one:
> 1) Autofs data is migrated via AutofsEntry structure, which is nested to
> MntEntry structure.
> 2) Dump stage is now only converts real pgrp into virtual one. All the collect
> and control pipe check is done in "parse" stage.
> 3) All the autofs pipes are collected into a list. This list is checked on
> packetized pipe dump to distinguish between autofs and other pipes (which are
> still not supported).
> 4) Control pipe restore is now done by creating another pipe fd with custom
> post_open callback instead of artificial files.
> 5) New list of objects and actors was introduced to create shared autofs data
> after both mounts and shrared objects are restored.
> 6) Timeout restore and making mount catatonic is done right after mount pint
> is created. It allows to avoid of autofs data objects creation and post_open
> callback calling in case of catatonic mounts.
>
> v3: fixed write pipe end restore, when it was closed.