Linux: Discussing Hibernation Requirements

"'Since many alternative approaches to hibernation are now being considered and discussed,' Rafael Wysocki began on the lkml, 'I thought it might be a good idea to list some things that in my not so humble opinion should be taken care of by any hibernation framework. They are listed below, not in any particular order, because I think they all are important.' He continued with the following list, including a paragraph discussing each: 'filesystems mounted before the hibernation are untouchable; swap space in use before the hibernation must be handled with care; there are memory regions that must not be saved or restored; the user should be able to limit the size of a hibernation image; hibernation should be transparent from the applications' point of view; state of devices from before hibernation should be restored, if possible; on ACPI systems special platform-related actions have to be carried out at the right points, so that the platform works correctly after the restore; hibernation and restore should not be too slow; hibernation framework should not be too difficult to set up...'"

Complete Story

Related Story:
Linux: Hibernation With Kexec(Jul 15, 2007)