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This page lists older (0.x) CRIU releases. For the latest release, see Download/criu.


v. 0.8Edit

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

New featuresEdit

  • 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 improvementsEdit

  • 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. 0.7Edit

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

New featuresEdit

  • 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. 0.6Edit

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

New featuresEdit

  • 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. 0.5Edit

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

New featuresEdit

  • 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. 0.4Edit

Released: 20 Feb 2013
GIT tag: v0.4

New featuresEdit

  • 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)


  • 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. 0.3Edit

Released: 11 Dec 2012
GIT tag: v0.3

New featuresEdit

  • 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 improvementsEdit

  • 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. 0.2Edit

Released: 20 Sep 2012
GIT tag: v0.2

v. 0.1Edit

Released: 23 Jul 2012
GIT tag: v0.1

See alsoEdit