From: Marco Stornelli <marco.stornelli@gmail.com>
To: Vladimir Davydov <vdavydov@parallels.com>
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org, criu@openvz.org, devel@openvz.org,
xemul@parallels.com
Subject: Re: [PATCH RFC] pram: persistent over-kexec memory file system
Date: Sat, 27 Jul 2013 17:41:30 +0200 [thread overview]
Message-ID: <51F3EA2A.3090905@gmail.com> (raw)
In-Reply-To: <1374841763-11958-1-git-send-email-vdavydov@parallels.com>
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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WARNING: multiple messages have this Message-ID (diff)
From: Marco Stornelli <marco.stornelli@gmail.com>
To: Vladimir Davydov <vdavydov@parallels.com>
Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-mm@kvack.org, criu@openvz.org, devel@openvz.org,
xemul@parallels.com
Subject: Re: [PATCH RFC] pram: persistent over-kexec memory file system
Date: Sat, 27 Jul 2013 17:41:30 +0200 [thread overview]
Message-ID: <51F3EA2A.3090905@gmail.com> (raw)
In-Reply-To: <1374841763-11958-1-git-send-email-vdavydov@parallels.com>
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
next prev parent reply other threads:[~2013-07-27 15:41 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-26 12:29 [PATCH RFC] pram: persistent over-kexec memory file system Vladimir Davydov
2013-07-26 12:29 ` Vladimir Davydov
2013-07-26 12:29 ` Vladimir Davydov
2013-07-27 15:41 ` Marco Stornelli [this message]
2013-07-27 15:41 ` Marco Stornelli
2013-07-27 17:35 ` Vladimir Davydov
2013-07-27 17:35 ` Vladimir Davydov
2013-07-27 17:35 ` Vladimir Davydov
2013-07-27 17:37 ` Marco Stornelli
2013-07-27 17:37 ` Marco Stornelli
2013-07-28 10:05 ` Vladimir Davydov
2013-07-28 10:05 ` Vladimir Davydov
2013-07-28 10:05 ` Vladimir Davydov
2013-07-28 11:02 ` Marco Stornelli
2013-07-28 11:02 ` Marco Stornelli
2013-07-28 14:31 ` Vladimir Davydov
2013-07-28 14:31 ` Vladimir Davydov
2013-07-28 14:31 ` Vladimir Davydov
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