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RE: [Xen-users] Watchdog support in XEN?
| To: | "Andreas Bach Aaen \(AH/TED\)" <andreas.bach.aaen@xxxxxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | RE: [Xen-users] Watchdog support in XEN? |
| From: | "Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx> |
| Date: | Tue, 26 Jul 2005 20:57:34 +0100 |
| Cc: | ian.pratt@xxxxxxxxxxxx |
| Delivery-date: | Tue, 26 Jul 2005 19:56:09 +0000 |
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| Thread-topic: | [Xen-users] Watchdog support in XEN? |
> Many physical PCs have a hardware watchdog. This is a good > way of getting up and running again if you somehow have a bug > that causes a deadlock. > If you run linux in DomU you will have to use a software > watchdog. The kernel provides such a software watchdog. But > could there be scenarios where the DomU domain will lockup > without the software watchdog goes off? > Interrupts? > > So my question does XEN provide a "hardware" watchdog that > the user domains can use? > It might be safer that the counter and trigger resides in the > XEN domain than in the user domains. It doesn't today, but could easily be added. A better approach might be to do some more sophisticated higher-level liveness monitoring in domain0, then use the tools to reboot the domain. Ian _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users |
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