Containers/Mini-summit 2008

There will be a containers mini-summit at the OLS'08. This page is for organizing this mini-summit. Feel free to edit.

When: 22nd of July 2008
Where: Ottawa, ON, Canada.

Proposal

The mini-summit proposal sent to OLS organizers. See proposal.

Topics to discuss

• Device accessibility cgroup (maybe with remap ability)
• TTYs
• Syslog
• Checkpoint/restart
• Memory controllers
• more?..

List of attendees

Please fill in your name here if you are going to attend, or email kir at openvz dot org if you are too lazy. Surely the list is not final, so put your name even if you are not sure you can make it.

This list is in no particular order.

1. Pavel Emelyanov
2. Denis Lunev
3. Andrey Mirkin
4. Serge Hallyn
5. Dave Hansen
6. Daniel Lezcano
7. Srivatsa Vaddagiri
8. Balbir Singh
9. Sukadev Bhattiprolu
10. Paul Menage
11. Eric W. Biederman
12. Oren Laadan
13. Yamamoto Takashi
14. Kamezawa Hiroyuki
15. Benjamin Thery
16. Herbert Pötzl
17. Oleg Nesterov
18. Dhaval Giani
19. Bart Trojanowski
20. Joseph Ruscio
21. Constant Chan
22. Linda Knippers
23. Satoshi Uchida
24. Masahiko Takahashi
25. Martine Silbermann
26. Benoit des Ligneris
27. Patrick Naubert
28. Daisuke Nishimura
29. Sudhir Kumar
30. Munehiro Ikeda
31. Kamalesh Babulal
32. John Schulz

Agenda

• Namespaces/Containers (8am-10:30am)
  • sysfs issues (and any /proc issues)
    • uevents/hotplug
  • Network namespaces issues
    • multiple namespaces in one process
  • Device namespace design?
  • User namespace
  • Additional needed namespaces
    • Small namespaces What to do with small subsystem that might need virtualization. E.g. in openvz we have FUSE, binfmt_misc and some other small stuff virtualized. But how to merge it in mainline? Create a separate namespace for each? Mere them into one? How to call this then?
  • Handling filesystem/namespace synchronization (not sure what the issue is)
  • Container design
    • How to enter a container
    • Nature of a 'container' — kernel object or userspace fiction

• Cgroups+Resource management (11:30-2pm)
  • Cgroup implementation
  • Additional cgroups and their design
  • libcg - userspace explotation of control groups/resource management
  • Resource management
• Checkpoint/Restart (2:30pm-5pm)
  • Summary of existing c/r patchsets/designs
  • How to initiate and synchronize checkpoint/restart
  • (state of freezer subsystem?)
  • Memory state dump
  • How to dump/fetch data for resource (file, ipc) checkpoint
  • How to do restart
  • Hopefully we can make decisions here, and get a bit of a hackfest going during OLS

Moderators

• Namespaces/containers: Serge Hallyn, Dave Hansen
• Cgroups and resource management: Paul Menage, Balbir Singh, Dhaval Giani
• Checkpoint/restart: Daniel Lezcano, Oren Laadan

See also

• http://www.linuxsymposium.org/2008/cfp.php — OLS call for papers
• https://lists.linux-foundation.org/pipermail/containers/2008-January/009688.html