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Re: Fault Tolerant Postgresql (two machines, two postmasters, one disk array) - Mailing list pgsql-general

From John D. Burger
Subject Re: Fault Tolerant Postgresql (two machines, two postmasters, one disk array)
Date
Msg-id 4086832D-67A6-47A2-9F82-497D4A28E47D@mitre.org
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In response to Re: Fault Tolerant Postgresql (two machines, two postmasters, one disk array)  (Andrew Sullivan <ajs@crankycanuck.ca>)
Responses Re: Fault Tolerant Postgresql (two machines, two postmasters, one disk array)
List pgsql-general
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Andrew Sullivan wrote:

> Now, if B mounts the disk and starts
> the postmaster, but doesn't have a way to make _sure_ tha A is
> completely disconnected from the disk, then it's entirely possible A
> will flush buffers out to the still-mounted data area.  Poof!
> Instant data corruption.

Shoot The Other Node In The Head:

http://www.linux-ha.org/STONITH

- John D. Burger
   MITRE

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