Messages in this thread |  | | Date | Mon, 22 Feb 2010 18:17:00 -0500 | From | Oren Laadan <> | Subject | Linux Checkpoint-Restart - v19 |
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Hi Andrew,
We've put a stake in the ground for our next set of checkpoint/restart patches, v19. It has some great new stuff, and we put extra effort to address your concerns. We would like to have the code included in -mm for wider feedback and testing.
This one is able to checkpoint/restart screen and vnc sessions, and live-migrate network servers between hosts. It also adds support for x86-64 (in addition to x86-32, s390x and powerpc). It is rebased to kernel 2.6.33-rc8.
Since one of your main concerns was about what is not yet implemented and how complicated or ugly it will be to support that, we've put up a wiki page to address that. In it there is a simple table that lists what is not implemented and the anticipated solution impact, and for some entries a link to more details.
The page is here: http://ckpt.wiki.kernel.org/index.php/Checklist
We want to stress that the patchset is already very useful as-is. We will keep working to implement more features cleanly. Some features we are working on include network namespaces and device configurations, mounts and mounts namespaces, and file locks. Should a complicated feature prove hard to implement, users have alternatives systems like kvm, until we manage to come up with a clean solution.
We believe that maintenance is best addressed through testing. We now have a comprehensive test-suite to automatically find regressions. In addition, we ran LTP and the results are the same with CHECKPOINT=n and =y.
If desired we'll send the whole patchset to lkml, but the git trees can be seen at:
kernel: http://www.linux-cr.org/git/?p=linux-cr.git;a=summary user tools: http://www.linux-cr.org/git/?p=user-cr.git;a=summary tests suite: http://www.linux-cr.org/git/?p=tests-cr.git;a=summary
Thanks,
Application checkpoint/restart team
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