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Tycho Andersen ced9c529f6 restore: fix race with helpers' kids dying too early 
We masked off SIGCHLD in wait_on_helpers_zombies(), but in fact this is too
late: zombies can die any time after CR_STATE_RESTORE before this function
is called, which lead to us getting "unexpected" deaths. Instead, we should
mask off SIGCHLD before the helpers finish CR_STATE_RESTORE, since they're
explicitly going to wait on all their kids to make sure they don't die
anyway.

Signed-off-by: Tycho Andersen <tycho.andersen@canonical.com>
Acked-by: Andrew Vagin <avagin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
2016-08-01 16:51:34 +03:00
contrib Add OverlayFS support to docker_cr.sh 2015-08-18 18:14:32 +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 restore: fix race with helpers' kids dying too early 2016-08-01 16:51:34 +03:00
Documentation criu: fix some spelling errors in criu.txt 2016-06-28 13:12:59 +03:00
images ipc/sysctl: c/r fs.mqueue.msg_default fs.mqueue.msgsize_default 2016-08-01 16:51:33 +03:00
lib criu: almost fix building on Alpine Linux 2016-07-09 22:04:26 +03:00
scripts travis: run test/others/exec 2016-08-01 16:51:33 +03:00
test tests: add a test for the case when there is a helper with a zombie child 2016-08-01 16:51:34 +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 travis: build tests in a separate job 2016-08-01 16:51:05 +03:00
COPYING Add LGPL licence for library directory 2013-04-01 12:29:06 +04:00
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 zdtm: use flake8 to verify zdtm.py 2016-06-28 13:09:35 +03:00
Makefile.install autofs: install -- Ship scripts/systemd-autofs-restart.sh 2016-07-05 23:18:15 +03:00
Makefile.versions criu: Version 2.4 2016-07-11 13:43:45 +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