Hibernation maybe ... try "echo "disk" > /sys/power/state" On Wed, Apr 16, 2008 at 4:44 PM, Peter Teoh <htmldeveloper@xxxxxxxxx> wrote: > Sorry if this is a a crazy idea.....just be forewarned.... > > First, I would like to make a reference to VMWare's snapshot (name not > important, emphasize the idea) feature - hopefully u are familiar with > it. This is a feature whereby u can freeze the entire OS (kernel + > userspace application running) and then later reload itself next time, > continuing where it left off, without reboot from ground zero. > > Next, can I ask, is such a feature useful in Linux? Ie, able to > restart the kernel + userspace application from where u left off, the > last time round. Not JUST the normal suspend/resume feature, but > more important able to CHOOSE among the different available images for > u to resume on. Eg, u want to freeze the current 2.6.25-rc6 kernel, > save it, and then restore back the 2.6.23-rc5 image, work on it, save > it, and then restore the previous image again. All done without > virtualization as in the VMWare sense - which really is CPU intensive > and slow things down a lot. Now we can directly execute each OS > kernel image on the CPU, and since saving and restoring is quite fast > (eg, zipping up the entire physical memory before saving into > permanent storage) - I supposed this will be much faster than the > normal initialization/fsck work done normally....or did I missed out > anything? > > Essentially, to reiterate the key idea: able to snapshot the current > kernel+userspace permanent.....restore from another snapshot....and > then switch back again if needed etc.....will the implementation be > difficult...if not impossible???? > > -- > Regards, > Peter Teoh > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > -- Cheers - eric -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
