[LINUX] [$] CRIB: checkpoint/restore in BPF

[1s2k.pl]

The desire for the ability to checkpoint a process — to record its state in a form that can be restarted at a future time — on Linux is almost as old as Linux itself. See, for example, this announcement of a checkpoint project that appeared in LWN in 1998. While working solutions exist, they can be somewhat fragile and difficult to use; it is not surprising that some people are interested in finding a better alternative. A current effort goes by the name CRIB, for Checkpoint/Restore in (naturally) BPF. It is far from clear that CRIB will replace the existing solutions, but it is an interesting look at a different way of solving the problem.

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