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Andrey Ryabinin d0ff73077d dump: add timeout for collecting processes 
Currently criu dump may hang indefinitely. E.g. in wait for task
that blocked in vfork() or task could be in D state for some other
reason. This patch adds time limit on collecting tasks during the
dump operation. If collecting processes takes too long, the dump
process will be terminated. Timeout is 5 seconds by default, but
it could be changed via parameter.

Signed-off-by: Andrey Ryabinin <aryabinin@virtuozzo.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
2015-12-21 12:00:49 +03:00
arch criu: x86_32: change stack align to 16 bit on parasite head 2015-12-08 15:10:22 +03:00
contrib Add OverlayFS support to docker_cr.sh 2015-08-18 18:14:32 +03:00
Documentation Build pie objects separately 2015-10-14 15:53:07 +03:00
include dump: add timeout for collecting processes 2015-12-21 12:00:49 +03:00
lib lib: Don't use alloca over net received size 2015-11-17 10:53:02 +03:00
pie pie: move seccomp before creds to avoid resoring them after setuid 2015-12-18 19:54:29 +03:00
protobuf criu: dump loginuid & oom_score_adj values 2015-12-16 18:08:58 +03:00
pycriu crit: Speed up jenkins test ~60 times 2015-12-11 16:36:05 +03:00
scripts make: Don't forget to clean up obj-x 2015-10-26 12:11:10 +03:00
test test: block prctl in seccomp_filter 2015-12-18 19:54:30 +03:00
.gitignore build: ignore/clean usr/ 2015-11-05 15:35:17 +03:00
.mailmap repo: Add mailmap file 2012-03-25 23:31:20 +04:00
.travis.yml travis: add libcap-dev 2015-07-23 15:12:50 +03:00
action-scripts.c scripts: print an error message if one or scripts failed 2015-11-05 15:19:27 +03:00
aio.c aio: Fix vma->start printing format on arm 2014-12-30 15:38:25 +03:00
bfd.c bfd: add breadchr 2015-10-27 22:51:09 +03:00
bitmap.c bitmap -- Add few helpers for bits manipulations 2015-11-12 11:15:02 +03:00
cgroup.c cgroup: use xsprintf() in rewrite_cgsets() 2015-12-21 11:57:01 +03:00
COPYING Add LGPL licence for library directory 2013-04-01 12:29:06 +04:00
cr-check.c cr-check: Don't include sys/syscalls.h 2015-12-04 11:41:26 +03:00
cr-dedup.c page-read: Explicitly mark ENOENT with return code 2015-03-13 14:42:11 +03:00
cr-dump.c dump: add timeout for collecting processes 2015-12-21 12:00:49 +03:00
cr-errno.c cr-errno: initial commit 2014-12-19 18:58:46 +03:00
cr-exec.c ptrace: split task_seize into seize_catch_task and seize_wait_task 2015-08-07 13:47:11 +03:00
cr-restore.c cr-restore: optimize {loginuid,oom_score_adj} restoring 2015-12-21 11:58:05 +03:00
cr-service.c Rename cr_opts.ps_port into port 2015-12-15 14:00:09 +03:00
cr-show.c show: read a second magic when it's required 2015-04-21 16:15:44 +03:00
CREDITS Add the CREDITS file 2012-07-30 13:52:37 +04:00
crit crit: The 'mems' explorer 2015-12-16 18:14:57 +03:00
crtools crtools: rename binary to criu 2013-04-30 20:17:55 +04:00
crtools.c dump: add timeout for collecting processes 2015-12-21 12:00:49 +03:00
Dockerfile Revert "travis: install libseccomp-dev" 2015-07-14 18:28:05 +03:00
eventfd.c img: Rename fdset -> imgset 2014-09-30 21:48:10 +04:00
eventpoll.c img: Remove O_OPT and COLLECT_OPTIONAL 2015-03-13 14:42:01 +03:00
fault-injection.c criu: Fault injection core 2015-10-19 12:42:29 +03:00
fifo.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
file-ids.c kcmp: Stop showing ids tree 2015-08-18 18:17:31 +03:00
file-lock.c lock: parse the lock field in fdinfo if it's avaliable (v2) 2015-04-27 14:53:24 +03:00
files-ext.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
files-reg.c Fix compilation after previous commit 2015-12-18 19:16:26 +03:00
files.c files: check fd flags after restore 2015-12-16 18:22:50 +03:00
fsnotify.c fsnotify: Lookup for watchee path before doing irmap 2015-11-05 15:39:17 +03:00
image-desc.c fs: Add binfmt_misc support 2015-12-08 14:52:26 +03:00
image.c img: Remove empty lazy images after dump 2015-05-30 00:31:52 +03:00
ipc_ns.c ipc: save local user and group id-s for ipc objects 2015-10-26 12:20:12 +03:00
irmap.c irmap: use xsprintf() in irmap_update_dir() 2015-12-21 11:57:01 +03:00
kcmp-ids.c kcmp: Stop showing ids tree 2015-08-18 18:17:31 +03:00
kerndat.c kerndat: check whether ipv6 is supported or not (v2) 2015-11-19 15:18:08 +03:00
libnetlink.c netlink: increase the receive buffer size 2015-09-04 18:26:51 +03:00
log.c Need bigger log buffer to avoid message truncation 2015-07-13 15:19:14 +03:00
lsm.c lsm: don't leak apparmor string in the case of "unconfined" 2015-12-18 17:22:00 +03:00
Makefile make: Fix @install-criu target 2015-12-15 15:03:07 +03:00
Makefile.config build: get rid of vestigial Makefile.config test 2015-07-15 17:34:14 +03:00
Makefile.crtools service: Remove systemd startup mode 2015-12-07 11:28:49 +03:00
Makefile.inc make: Allow to install in custom dirs 2015-10-05 13:24:23 +03:00
mem.c Pass task_size to vma_area_is_private() 2015-08-03 17:14:18 +03:00
mount.c mount: use xsprintf() in resolve_external_mounts() 2015-12-21 11:57:03 +03:00
namespaces.c mount: wait when mntns will be created to get its root (v2) 2015-11-17 10:46:00 +03:00
net.c util: don't leak cr-img objects (v2) 2015-11-26 17:04:37 +03:00
netfilter.c util: Add flags to cr_system 2015-11-12 16:31:19 +03:00
page-pipe.c log: Use pr_quelled helper 2014-09-03 20:56:58 +04:00
page-read.c page-read: Fix compilation on arm (2) 2015-11-12 23:51:15 +03:00
page-xfer.c Rename cr_opts.ps_port into port 2015-12-15 14:00:09 +03:00
pagemap-cache.c pagemap-cache: add const-qualifier to pmc's vma 2015-12-08 15:45:44 +03:00
parasite-syscall.c parasite-syscall: print an error message only in error cases 2015-11-19 15:34:14 +03:00
pipes.c pipe: add ability to restore both ends of inhereted pipes 2015-07-15 17:35:59 +03:00
plugin.c Append newline when using pr_err() 2015-10-09 18:28:00 +03:00
proc_parse.c criu: dump loginuid & oom_score_adj values 2015-12-16 18:08:58 +03:00
protobuf-desc.c fs: Add binfmt_misc support 2015-12-08 14:52:26 +03:00
protobuf.c img: Don't create empty images 2015-03-16 15:58:32 +03:00
pstree.c pstree: more pstree-related helpers 2015-12-14 14:04:21 +03:00
ptrace.c seize: don't wory if a cgroup contains some extra tasks (v3) 2015-12-14 15:55:30 +03:00
rbtree.c code: Fix spaced indentation where found 2012-08-11 21:36:03 +04:00
README.md Updated README 2015-05-19 22:38:06 +03:00
rst-malloc.c Use run-time page_size() for mremap 2015-07-28 13:38:30 +03:00
seccomp.c seccomp: don't leak info on an error path 2015-11-30 11:39:43 +03:00
security.c security: add cr_fchown 2015-02-10 16:54:31 +03:00
seize.c dump: add timeout for collecting processes 2015-12-21 12:00:49 +03:00
shmem.c page-read: Explicitly mark ENOENT with return code 2015-03-13 14:42:11 +03:00
sigframe.c sigframe: cast the pointer to the field ucontext::uc_sigmask to k_rtsigset_t 2014-04-08 15:36:09 +04:00
signalfd.c img: Remove O_OPT and COLLECT_OPTIONAL 2015-03-13 14:42:01 +03:00
sk-inet.c ipv6: only save scopeid when it is required 2015-12-03 14:54:25 +03:00
sk-netlink.c img: Remove O_OPT and COLLECT_OPTIONAL 2015-03-13 14:42:01 +03:00
sk-packet.c img: Remove O_OPT and COLLECT_OPTIONAL 2015-03-13 14:42:01 +03:00
sk-queue.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
sk-tcp.c tcp: disable the repair mode only for sockets of a current process (v3) 2015-07-15 17:35:21 +03:00
sk-unix.c unix: Fix double restoring of peerless unix sockets, which are peers for others 2015-12-18 17:23:50 +03:00
sockets.c socket: values of snd and rcv buffer should be divide into two 2015-10-27 22:55:36 +03:00
stats.c img: Introduce the struct cr_img 2014-09-30 21:48:13 +04:00
string.c string: Add strlcat helper 2013-11-29 15:36:07 +04:00
sysctl.c sysctl: don't skip erros 2015-12-08 15:12:19 +03:00
sysfs_parse.c sysfs_parse: use xsprintf() in fixup_aufs_vma_fd() 2015-12-21 11:57:02 +03:00
timerfd.c check: do timerfd check on mainline kernel 2015-10-19 12:37:32 +03:00
tty.c criu: tty: pick only master as a control terminal 2015-12-11 16:50:12 +03:00
tun.c check: also check tun support in mainline 2015-10-19 12:37:34 +03:00
util.c util: new string helpers introduced 2015-12-21 11:57:00 +03:00
uts_ns.c sysctl: move sysctl calls to usernsd 2015-10-05 13:16:14 +03:00
vdso.c vdso: merge per arch vdso.c file in a common one 2015-09-10 14:07:20 +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:

How to contribute