Re: [PATCH RFC] pram: persistent over-kexec memory file system

[Marco Stornelli]

Il 26/07/2013 14:29, Vladimir Davydov ha scritto:
> Hi,
>
> We want to propose a way to upgrade a kernel on a machine without
> restarting all the user-space services. This is to be done with CRIU
> project, but we need help from the kernel to preserve some data in
> memory while doing kexec.
>
> The key point of our implementation is leaving process memory in-place
> during reboot. This should eliminate most io operations the services
> would produce during initialization. To achieve this, we have
> implemented a pseudo file system that preserves its content during
> kexec. We propose saving CRIU dump files to this file system, kexec'ing
> and then restoring the processes in the newly booted kernel.

http://pramfs.sourceforge.net/

Marco

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