Re: Checkpoint/restart (was Re: [PATCH 0/4] - v2 - Object creationwith a specified id)

From: Oren Laadan
Date: Thu Jul 17 2008 - 19:22:20 EST

Dave Hansen wrote:
On Wed, 2008-07-09 at 18:58 -0700, Eric W. Biederman wrote:
In the worst case today we can restore a checkpoint by replaying all of
the user space actions that took us to get there. That is a tedious
and slow approach.

Yes, tedious and slow, *and* minimally invasive in the kernel. Once we
have a tedious and slow process, we'll have some really good points when

"Replaying all of the user space actions that took us to get there" -
this task is not even always possible without deterministic log/replay
mechanism :(


we try to push the next set of patches to make it less slow and tedious.
We'll be able to describe an _actual_ set of problems to our fellow
kernel hackers.

So, the checkpoint-as-a-corefile idea sounds good to me, but it
definitely leaves a lot of questions about exactly how we'll need to do
the restore.

-- Dave

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