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Re: Hurdish applications for persistence
From: |
Jonathan S. Shapiro |
Subject: |
Re: Hurdish applications for persistence |
Date: |
Wed, 12 Oct 2005 21:36:48 -0400 |
I have just spoken to Marcus to ask for an explanation of what "passive
translators" are. There is some humor here.
As I have said, we considered *not* making Coyotos persistent. We have a
design that is very similar to passive translators that would mostly
work. We have not built it, but I *think* that it resolves most of the
concerns about security that Marcus has identified.
We decided not to do it for two reasons:
1. It would be *much* slower than just keeping persistence.
2. There is a problem of consistency across applications. In a component
system where processes act as components, it isn't good enough in the
general case to restart a process. What you really need to be able to do
is to re-establish a connected graph of processes in such a way that all
of them agree on their current state and their state relationships to
their peers.
For example: an IPC that was in progress at the time of checkpoint must
be restored in such a way that it is still in progress at exactly the
same point in the transfer.
shap
- Re: Hurdish applications for persistence, (continued)
- Re: Hurdish applications for persistence, Bas Wijnen, 2005/10/13
- Re: Hurdish applications for persistence, Alfred M\. Szmidt, 2005/10/13
- Re: Hurdish applications for persistence, Jonathan S. Shapiro, 2005/10/13
- Re: Hurdish applications for persistence, Bas Wijnen, 2005/10/14
- Re: Hurdish applications for persistence, Marcus Brinkmann, 2005/10/14
- Re: Hurdish applications for persistence, Jonathan S. Shapiro, 2005/10/14
- Re: Hurdish applications for persistence, Alfred M\. Szmidt, 2005/10/13
- Re: Hurdish applications for persistence, Jonathan S. Shapiro, 2005/10/12
- Re: Hurdish applications for persistence, Alfred M\. Szmidt, 2005/10/13
Re: Hurdish applications for persistence, Marcus Brinkmann, 2005/10/12
- Re: Hurdish applications for persistence,
Jonathan S. Shapiro <=
- Re: Hurdish applications for persistence, Alfred M\. Szmidt, 2005/10/13
- Re: Hurdish applications for persistence, Marcus Brinkmann, 2005/10/13
- Re: Hurdish applications for persistence, Alfred M\. Szmidt, 2005/10/13
- Re: Hurdish applications for persistence, Marcus Brinkmann, 2005/10/13
- Re: Hurdish applications for persistence, Alfred M\. Szmidt, 2005/10/13
- Re: Hurdish applications for persistence, Marcus Brinkmann, 2005/10/13
- Re: Hurdish applications for persistence, Alfred M\. Szmidt, 2005/10/13
- Re: Hurdish applications for persistence, Marcus Brinkmann, 2005/10/13
Re: Hurdish applications for persistence, Bas Wijnen, 2005/10/13
Re: Hurdish applications for persistence, Alfred M\. Szmidt, 2005/10/13