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Line 17: − The <code>v3.11</code> upstream kernel already has all the required functionality merged. Make sure you have the following options turned on:+ − * General setup -> Checkpoint/restore support (<code>CONFIG_CHECKPOINT_RESTORE</code>)+ − * General setup -> Namespaces support (<code>CONFIG_NAMESPACES</code>)+ − * General setup -> Namespaces support -> PID namespaces (<code>CONFIG_PID_NS</code>)+ − * General setup -> open by fhandle syscalls (<code>CONFIG_FHANDLE</code>)+ − * General setup -> Enable eventfd() system call (<code>CONFIG_EVENTFD</code>)+ − * General setup -> Enable eventpoll support (<code>CONFIG_EPOLL</code>)+ − * File systems -> Inotify support for userspace (<code>CONFIG_INOTIFY_USER</code>)+ − * Executable file formats -> Emulations -> IA32 Emulation (<code>CONFIG_IA32_EMULATION</code>)+ − * Networking support -> Networking options -> Unix domain sockets -> UNIX: socket monitoring interface (<code>CONFIG_UNIX_DIAG</code>)+ − * Networking support -> Networking options -> TCP/IP networking -> INET: socket monitoring interface (<code>CONFIG_INET_DIAG</code>)+ − * Networking support -> Networking options -> TCP/IP networking -> INET: socket monitoring interface -> UDP: socket monitoring interface (<code>CONFIG_INET_UDP_DIAG</code>)+ − * Networking support -> Networking options -> Packet socket -> Packet: sockets monitoring interface (<code>CONFIG_PACKET_DIAG</code>)+ − * Networking support -> Networking options -> Netlink socket -> Netlink: sockets monitoring interface (<code>CONFIG_NETLINK_DIAG</code>)+ + + + + + + + + + + + − Note you might have to enable+ + − * General setup -> Configure standard kernel features (expert users) (<code>CONFIG_EXPERT</code>)+ + − option, which depends on+ + − * General setup -> Embedded system (<code>CONFIG_EMBEDDED</code>)+ + − (welcome to Kconfig reverse chains hell).+ + − For some [[usage scenarios]] there is an ability to track memory changes and produce incremental dumps. Need to enable+ − * Processor type and features -> Track memory changes (<code>CONFIG_MEM_SOFT_DIRTY</code>)+ + + − In the future we can start working on some new kernel stuff for CRIU. In that case we will first put this into the staging repository at [http://git.kernel.org/?p=linux/kernel/git/gorcunov/linux-cr.git;a=summary linux-cr.git] ([https://github.com/avagin/linux-rpi-criu/tree/criu-rpi-3.10.y linux-cr-rpi.git] for [http://www.raspberrypi.org/ Raspberry Pi]), so that anyone can checkout the latest branch and compile the kernel.+ + + + +
→Kernel configuration: restructured, kernel repo information moved to a separate page
== Kernel configuration ==
== Kernel configuration ==
Linux kernel v3.11 or newer is required, with some specific options set. If your distribution does not provide needed kernel, you might want to compile one yourself. Note we also have our [[custom kernel]], which might contain some experimental CRIU related patches.
Note you might have to enable
; <code>CONFIG_EXPERT</code>
: General setup -> Configure standard kernel features (expert users)
option, which depends on
; <code>CONFIG_EMBEDDED</code>
: General setup -> Embedded system
(welcome to Kconfig reverse chains hell).
The following options should be enabled for CRIU to work:
; <code>CONFIG_CHECKPOINT_RESTORE</code>
: General setup -> Checkpoint/restore support
; <code>CONFIG_NAMESPACES</code>
: General setup -> Namespaces support
; <code>CONFIG_PID_NS</code>
: General setup -> Namespaces support -> PID namespaces
; <code>CONFIG_FHANDLE</code>
: General setup -> open by fhandle syscalls
; <code>CONFIG_EVENTFD</code>
: General setup -> Enable eventfd() system call
; <code>CONFIG_EPOLL</code>
: General setup -> Enable eventpoll support
; <code>CONFIG_INOTIFY_USER</code>
: File systems -> Inotify support for userspace
; <code>CONFIG_IA32_EMULATION</code>
: Executable file formats -> Emulations -> IA32 Emulation
; <code>CONFIG_UNIX_DIAG</code>
: Networking support -> Networking options -> Unix domain sockets -> UNIX: socket monitoring interface
; <code>CONFIG_INET_DIAG</code>
: Networking support -> Networking options -> TCP/IP networking -> INET: socket monitoring interface
; <code>CONFIG_INET_UDP_DIAG</code>
: Networking support -> Networking options -> TCP/IP networking -> INET: socket monitoring interface -> UDP: socket monitoring interface
; <code>CONFIG_PACKET_DIAG</code>
: Networking support -> Networking options -> Packet socket -> Packet: sockets monitoring interface
; <code>CONFIG_NETLINK_DIAG</code>
: Networking support -> Networking options -> Netlink socket -> Netlink: sockets monitoring interface
For some [[usage scenarios]] there is an ability to track memory changes and produce [[incremental dumps]]. Need to enable
; <code>CONFIG_MEM_SOFT_DIRTY</code>
: Processor type and features -> Track memory changes
==iproute2==
==iproute2==