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| − | == What CRtools is ==
| + | See main article here [http://criu.org/CR_tools] |
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| − | '''CRtools''' is an utility to checkpoint/restore process tree. Unlike checkpoint/restore implemented completely in kernel space,
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| − | it tries to achieve the same target mostly in user space.
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| − | === Agenda ===
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| − | # Basic design (checkpoint == proc + SEIZE, restore == syscalls + execve)
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| − | # What's required from kernel
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| − | == Basic design ==
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| − | === Checkpoint ===
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| − | The checkpoint procedure relies heavily on '''/proc''' file system (it's a general place where crtools takes all the information it needs).
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| − | This includes:
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| − | * Files descriptors information (via '''/proc/$pid/fd''' and '''/proc/$pid/fdinfo''')
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| − | * Pipes parameters
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| − | * Memory maps (via '''/proc/$pid/maps''')
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| − | Though not all parameters can be observed this way, say the current '''brk()''' value of a process is not exported at all.
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Latest revision as of 20:31, 17 December 2011
See main article here [1]
