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Can BLCR checkpoint/restart multi-process applications?

April 26, 2017applications blcr Checkpoint multi-process

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Can BLCR checkpoint/restart multi-process applications?

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Yes, starting with version 0.5.0 BLCR is able to save and restore groups of related processes together with the pipes that connect them. To do this, BLCR must be given a single request that covers all the processes involved. Currently there are three ways to specify a group request to BLCR: • A process “tree”, consisting of a process and all its non-orphaned descendants. (An orphaned process is one who’s parent has exited, leaving it as a child of the init process). • A POSIX process group, consisting of all processes with a given PGID (including orphaned processes, if any). • A POSIX session, consisting of all processes with a given SID (including orphaned processes, if any). While BLCR can save and restore the pipes used for IPC among processes in these groups, it is unable at this time to deal with most other IPC mechanisms (see next FAQ).