CryoPID 0.5.9.1
(C) 2004-2005 Bernard Blackham
See LICENSE file for licensing detailsCryoPID allows you to capture the state of a running process in Linux and save it to a file. This file can then be used to resume the process later on, either after a reboot or even on another machine.
The advantages of CryoPID over other checkpointing systems available for Linux is that is does not require any prior thought in order to use it on a process. Binaries do not need modification or special loading procedures. The checkpointed binary need not be killed either.
To compile CryoPID, run: $ cd src $ make
This should create a program called "freeze", which is the only binary required.
Then to freeze a process, run: $ ./freeze
For example, $ ./freeze test 6123 will freeze process 6123 and save it as a file called test.
The generated checkpoint file is a self-extracting executable containing the image for the process.
If you are planning to use the checkpoint file in the long term, or resume on another machine where the libraries are potentially different (they must be precisely the same in order to resume without them), then you can pass the "-l" flag to freeze in order to have them saved into the binary also. This may increase the size of the executable substantially.
For help, e-mail the mailing list - cryopid-devel@lists.berlios.de.
For a list of what's supported in a process and what's not, the best guides are the TODO file, and the website - http://cryopid.berlios.de/
Enjoy!