Date: Tue, 15 Nov 2005 05:17:31 -0600
From: Robin Holt <holt@sgi.com>
To: "Serge E. Hallyn" <serue@us.ibm.com>
Cc: linux-kernel@vger.kernel.org, Hubertus Franke <frankeh@watson.ibm.com>,
       Dave Hansen <haveblue@us.ibm.com>, hch@infradead.org
Subject: Re: [RFC] [PATCH 00/13] Introduce task_pid api
Message-ID: <20051115111731.GA9976@lnx-holt.americas.sgi.com>
References: <20051114212341.724084000@sergelap>
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On Mon, Nov 14, 2005 at 03:23:41PM -0600, Serge E. Hallyn wrote:
> --
> 
> I'm part of a project implementing checkpoint/restart processes.
> After a process or group of processes is checkpointed, killed, and
> restarted, the changing of pids could confuse them.  There are many
> other such issues, but we wanted to start with pids.

Can't you just build a restart preloader which intercepts system calls
and translates pids?  Wouldn't this keep the kernel simpler and only
affect those applications that are being restarted?  Christoph, I
added you since you seem to tirelessly promote using preloaders to
work around this type of issue.  Is it possible?

Thanks,
Robin
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