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Cyrill Gorcunov 172f3e1908 freeze -- Wait for exiting tasks to complete 
There is a small race between exitings tasks and cgroup freezer:
it can report a pid of exiting process which we will consider
as a zombie and refuse to checkpoint. Lets do a trick instead:
if we meets such task just wait a bit and repeate a freezing.

v3: Use EAGAIN instead of EPERM since EPERM collide
    with general -1 error code.

travis-ci: success for freeze -- Wait for exiting tasks to complete (rev3)
Signed-off-by: Cyrill Gorcunov <gorcunov@openvz.org>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
2016-10-24 16:00:15 +03:00
contrib Add script to install required packages to compile in Debian 2016-09-26 15:42:43 +03:00
coredump coredump: Rename dir to coredump 2016-06-28 13:04:58 +03:00
crit crit/decode: set default opts['nopl'] to False 2016-05-30 13:47:54 +03:00
criu freeze -- Wait for exiting tasks to complete 2016-10-24 16:00:15 +03:00
Documentation Added --display-stats to the man page 2016-10-24 14:59:35 +03:00
images images: rename NONE to CG_NONE 2016-10-10 12:49:28 +03:00
lib lib: add inherit_fd 2016-10-24 16:00:15 +03:00
scripts CI: add clang build for travis-ci 2016-10-24 16:00:15 +03:00
test test: robustify mnt_tracefs test 2016-10-24 16:00:15 +03:00
.gitignore uninstall: use --record with setup.py, v2 2016-05-06 14:38:29 +03:00
.mailmap repo: Add mailmap file 2012-03-25 23:31:20 +04:00
.travis.yml CI: add clang build for travis-ci 2016-10-24 16:00:15 +03:00
COPYING COPYING: fix a typo in a preamble 2016-08-11 16:18:43 +03:00
CREDITS Add the CREDITS file 2012-07-30 13:52:37 +04:00
INSTALL.md build: Add INSTALL.md and update "make help" 2016-05-06 14:38:29 +03:00
Makefile Makefile: don't compile with -O0 if GCOV=1 2016-10-24 16:00:15 +03:00
Makefile.install build/make: return to make from top directory 2016-08-01 18:38:32 +03:00
Makefile.versions criu: Version 2.7 2016-10-17 11:30:31 +03:00
README.md Add ascciinema tour on basic criu features. 2016-06-16 16:37:06 +03:00

README.md

CRIU (Checkpoint and Restore in Userspace)

An utility to checkpoint/restore tasks. Using this tool, you can freeze a running application (or part of it) and checkpoint it to a hard drive as a collection of files. You can then use the files to restore and run the application from the point it was frozen at. The distinctive feature of the CRIU project is that it is mainly implemented in user space.

The project home is at http://criu.org.

Pages worth starting with are:

A video tour on basic CRIU features

CRIU introduction

How to contribute