[CRIU] [PATCH v1 00/12] criu gc command implementation

[Pavel Emelyanov]

On 07/28/2016 08:14 AM, Eugene Batalov wrote:
> Hello.
> 
> The aim of this patch set is to implement new criu gc command.
> criu gc removes objects left in the system after dump was performed.
> Its main use case is to cleanup on node where dump was
> performed but restore isn't planned.

I'd like to pick up Tycho on this thread, as he was very interested
in this feature some time ago.

Tycho, your feedback on this will be appreciated :)

-- Pavel

> CRIU gc accepts dump dir path as an input and removes:
> 1. Link remaps created for ps tree
> 2. Netfilter rules that drop ps tree tcp packets
> Currently this is all that CRIU dump leaves in the system.
> 
> --show option changes gc command behavior. It only
> shows what was left in the system without objects removal.
> 
> == V1 changes ==
> - Fix python lint errors in zdtm.py
> 
> Eugene Batalov (11):
>   mount: save fs root fd of ps tree root mnt ns in its ns_id
>   gc: implement link remaps deletion
>   gc: implement link remaps show
>   gc: implement unlocking of tcp connections
>   gc: implement locked tcp connections show
>   zdtm: implement capturing of criu action stdout and stderr
>   zdtm: implement capturing of test hooks stdout and stderr
>   zdtm: extract cr and state checking logic into function
>   zdtm: implement criu gc tests
>   jenkins: add script to run all gc aware tests
>   zdtm: add host flavor to unlink_regular00 test
> 
> Maxim Kuzmin (1):
>   gc: mock implementation of new gc command
> 
>  criu/Makefile.crtools                  |   1 +
>  criu/cr-gc.c                           | 149 +++++++++++++++++++++++++++++++++
>  criu/crtools.c                         |  12 +++
>  criu/files-reg.c                       |  75 +++++++++++++++--
>  criu/include/cr_options.h              |   1 +
>  criu/include/crtools.h                 |   1 +
>  criu/include/files-reg.h               |   2 +
>  criu/include/net.h                     |   1 +
>  criu/include/sk-inet.h                 |   3 +-
>  criu/mount.c                           |   7 +-
>  criu/net.c                             |  12 +++
>  criu/sk-tcp.c                          |  47 ++++++++++-
>  test/jenkins/criu-gc.sh                |  10 +++
>  test/zdtm.py                           | 140 +++++++++++++++++++++++++------
>  test/zdtm/static/mntns_link_remap.hook |  10 +++
>  test/zdtm/static/socket-tcp.hook       |   9 ++
>  test/zdtm/static/socket-tcp6.hook      |   9 ++
>  test/zdtm/static/unlink_regular00.desc |   2 +-
>  test/zdtm/static/unlink_regular00.hook |   9 ++
>  19 files changed, 462 insertions(+), 38 deletions(-)
>  create mode 100644 criu/cr-gc.c
>  create mode 100755 test/jenkins/criu-gc.sh
>  create mode 100755 test/zdtm/static/mntns_link_remap.hook
>  create mode 100755 test/zdtm/static/socket-tcp.hook
>  create mode 100755 test/zdtm/static/socket-tcp6.hook
>  create mode 100755 test/zdtm/static/unlink_regular00.hook
>