Download/criu

v. 1.1

Tarball:	criu-1.1.tar.bz2
Version:	1.1
Released:	28 Jan 2014
GIT tag:	v1.1

Fixes

• Errors from memory dumping are not handled resulting in corrupted dumps
• EOF detection in stacked images is done with error
• Stacked images don't work on non-shared FS (missing pagemap-s)

v. 1.1-rc2

Tarball:	criu-1.1-rc2.tar.bz2
Version:	1.1-rc2
Released:	20 Jan 2014
GIT tag:	v1.1-rc2

Fixes

• Crash in criu check
• RPC check always fail on 3.11 kernel
• Failed fork() didn't abort restore
• Dump fail not reported via RPC
• RPC client disconnect wasn't handled
• Page server could connect to self for writing images
• Hang on pre-dumping task livig in net-namespace
• VDSO page mis-handle on pre-dump
• FPU state loss on pre-dump
• Memory tracking turns ON w/o request
• Various fixes (and improvements) in build system

v. 1.1-rc1

Tarball:	criu-1.1-rc1.tar.bz2
Version:	1.1-rc1
Released:	30 Dec 2013
GIT tag:	v1.1-rc1

New features

• libcriu.so -- wrapper library for RPC clients
• Plugins
  • External unix sockets
  • External bind mounts
  • External net devices
  • Unknown file types
• Images deduplication in incremental dumps
• Integration with systemd
• Filtering of criu show output

Note: The API defined in the first two items above may change after -rc1

Fixes

• Errors in unlinked files/sockets detection on BTRFS
• NFS silly-rename files are not treated as unlinked
• Freezer fail to seize quickly forking/pthread_create-ing tasks
• Extra stop signal queued for stopped tasks after pre-dump
• Wrong dying task state detection
• Lost RPC dump response
• Crash when reporting restore error via RPC
• Negative return code into shell
• Tasks left in wrong states after failed dump
• A little bit more verbose check action
• Coverity checks fail here and there

v. 1.0

Tarball:	criu-1.0.tar.bz2
Version:	1.0
Released:	25 Nov 2013
GIT tag:	v1.0

Fixes

• After --leave-running linked remaps were not cleaned
• TCP was left locked after --leave-running
• Weak criteria in memory COW detection
• Private mapping's premmapped address overwrote file ID
• Restorer memory could overlap with timers/signals arrays
• RPC worker reused options from service task
• Suboptimal memory utilization by restorer arguments
• TCP unsent/unacked data boundary was lost
• Wrong dev_t decoding on 64 bit
• Unpredictable daemons (service and page-service) working dir
• Parasite stack could be corrupted by its arguments
• Error from exe link restore was ignored
• Artificial small limit on the number of shared memory segments to restore
• Bug in ARM VFP restore
• VDSO proxy was unmapped at the very end of restore

New features

• -W option to specify working dir
• CHECK request in RPC
• Optimized headers
• More info in logs about undumpable files
• More comments about tricky dump/restore places
• Generic memory allocation for restorer

v. 0.8

Tarball:	criu-0.8.tar.bz2
Version:	0.8
Released:	18 Oct 2013
GIT tag:	v0.8

New features

• RPC service
• Ability to work from non-root user (via +s bit)
• Handle stopped tasks
• Restore tasks' root path
• Dump and restore net ns iptables configuration (w/o conntracks)
• Support for external net devices in netns (e.g. openvz venet)
• Support CORK and NODELAY TCP options
• SEQPACKET unix sockets support

Fixes and improvements

• Unload restorer blob after restore
• Fixes and enhancements in criu show
• Fix in unsorted inotify wd restoring
• Fixed trimmed messages in parasite transport
• Fine-grained pgrps restore
• Fix in large TCP buffers restore
• Fixed buffer overflow in IPC ns dumping
• Fix in early page server connection close on pre-dump
• Fixed race in handling aborted parasite blob
• Fixed lost unmapped criu vmas in restore
• Fixes in parsing devices in /proc/pid/maps and /proc/locks
• Fixed snd/rcv buf sockoptions restore
• Enhanced logging in parasite

v. 0.7

Tarball:	criu-0.7.tar.bz2
Version:	0.7
Released:	3 Sep 2013
GIT tag:	v0.7

New features

• TUN devices support (requires patched kernel)
• Alternative stack (sigaltstack) C/R
• Shared and master/slave mounts support
• Restore statistics
• Net device address C/R
• Safer and simpler asynchronous parasite
• Fixes in
  • Stack guard page dump/restore
  • Page server communications
  • COW mappings restore
  • Zombies restore
  • Aborting failed restore
  • TCP connection restore (some require patched kernel)
  • Semi-closed Unix sockets with data dump/restore
  • etc.

v. 0.6

Tarball:	criu-0.6.tar.bz2
Version:	0.6
Released:	1 Jul 2013
GIT tag:	v0.6

New features

• Cross-compiling support
• Ready to accept images from OpenVZ RHEL6-based kernel
  • VDSO conversion
• Posix CPU timers C/R
• Asynchronous parasite
  • Self-heal dumpee in case of crtools crash
• Memory changes tracking (requires patched kernel)
  • Incremental backups
  • Pre-dump task command for smaller freeze time
• Dump statistics
• Return-arg for remote syscalls execution
• Improved "show" output
• Opened /proc/PID/ns/* files C/R
• Daemon mode for page-server
• Build-time features test (makes it possible to build on different distros)

v. 0.5

Tarball:	criu-0.5.tar.bz2
Version:	0.5
Released:	30 Apr 2013
GIT tag:	v0.5

New features

• C/R netlink sockets
• C/R pending signals
• New format for memory dumps
• Incremental dumps (preliminary)
• Ability to directly send memory dumps on remote host (for faster live migration)
• Images showing enhancements
• Kernel features checking enhancements
• Lots of BUGs fixed
• Renamed crtools to criu (both binary and source package names)

v. 0.4

crtools-0.4.tar.bz2
Released: 20 Feb 2013
GIT tag: v0.4

New features

• ARM port
• Remote syscall execution
• C/R of
  • FPU state
  • File locks (basic support)
  • Rlimits
  • FANotify descriptors
  • Shared fdtable (table of file descriptors)
  • Tasks' umask
  • Pipe buffer size
  • Unix sockets' credentials
  • TCP time-stamp offset (allows to migrate a TCP socket, requires custom kernel)
• Automatic namespaces detection (--namespace option is deprecated)

Internal

• Build system rework
• Dumping/restoring memory pointers standardized (while doing ARM port)
• Ability to collect coverage (gcov, reported here)
• 32/64-bit problems mostly resolved (while doing ARM port)

v. 0.3

crtools-0.3.tar.bz2
Released: 11 Dec 2012
GIT tag: v0.3

New features

• C/R of shell jobs
• Handle files, that are opened and unlinked, but some other hard link exists
• More SOL_SOCKET socket options. Two most interesting are:
  • Binding socket to device (SO_BINDTODEVICE)
  • Per-socket packet filter (SO_ATTACH_FILTER)
• Shutdown state of a socket
• Task scheduler parameters (nice, policy and prio)
• Properly handle COW pages
• Memory mapped packet sockets (with SOL- options this is enough for tcpdump tool support)
• Complementary groups (getgroups(2))
• Various mapping features, configured with madvise(2)
• Tune TCP sockets support to work with IPv6 sockets
• Closed (or not yet connected/bound) unix sockets

Bug fixes and improvements

• Print timestamps in log files
• Restructure source tree a little
  • PIE stuff in separate dir
  • Arch-specific code in arch/<Arch>/ directory
• Nicer show -c output for pages/pipes/etc contents
• Fixes in help text
• Save and restore blocked signals mask for threads
• Don't dump (and warn about it) corked UDP sockets
• Fixed livelocks when restoring too big socket queues
• Refresh info about sockets, that might have changed between diag dump and actual process freeze
• Lost file params and socket options for some unix sockets
• Fix inotify on opened and unlinked files
• Fix shared anonymous memory detection
• Properly close all files before restoring them
• Fixes in running external tools (ip/tar)
• Several fixes in control tty restoring code
• RT signals handlers dumped and restored

v. 0.2

crtools-0.2.tar.bz2
Released: 20 Sep 2012
GIT tag: v0.2

v. 0.1

crtools-0.1.tar.bz2
Released: 23 Jul 2012
GIT tag: v0.1