Date: Fri, 24 Jul 2009 14:09:53 -0500
From: "Serge E. Hallyn" <serue@us.ibm.com>
To: Oren Laadan <orenl@librato.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
       Linus Torvalds <torvalds@osdl.org>,
       containers@lists.linux-foundation.org, linux-kernel@vger.kernel.org,
       linux-mm@kvack.org, linux-api@vger.kernel.org,
       Dave Hansen <dave@linux.vnet.ibm.com>, Ingo Molnar <mingo@elte.hu>,
       "H. Peter Anvin" <hpa@zytor.com>,
       Alexander Viro <viro@zeniv.linux.org.uk>,
       Pavel Emelyanov <xemul@openvz.org>,
       Alexey Dobriyan <adobriyan@gmail.com>
Subject: Re: [RFC v17][PATCH 00/60] Kernel based checkpoint/restart
Message-ID: <20090724190953.GA22641@us.ibm.com>
References: <1248256822-23416-1-git-send-email-orenl@librato.com>
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Quoting Oren Laadan (orenl@librato.com):
> Application checkpoint/restart (c/r) is the ability to save the state
> of a running application so that it can later resume its execution
> from the time at which it was checkpointed, on the same or a different
> machine.
> 
> This version introduces 'clone_with_pids()' syscall to preset pid(s)
> for a child process. It is used by restart(2) to recreate process
> hierarchy with the same pids as at checkpoint time.
> 
> It also adds a freezer state CHECKPOINTING to safeguard processes
> during a checkpoint. Other important changes include support for
> threads and zombies, credentials, signal handling, and improved
> restart logic. See below for a more detailed changelog.
> 
> Compiled and tested against v2.6.31-rc3.

With the s390 patch I recently sent on top of this set, all of my
c/r tests pass, and ltp behaves the same as on plain v2.6.31-rc3
(up to and including hanging on mallocstress).

-serge
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