Filesystem solution for database redundancy

From: Jonathan Bartlett <johnnyb(at)eskimo(dot)com>
To: pgsql-general(at)postgresql(dot)org
Subject: Filesystem solution for database redundancy
Date: 2003-02-26 23:32:25
Message-ID: Pine.GSU.4.44.0302261529530.21453-100000@eskimo.com
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Has anyone looked into a filesystem solution for database redundancy?

I knew at one time there was a Linux device driver that would copy all
changes to device X to a network block device Y.

Two questions:

* Does anyone know what this driver was or any documentation to it?

* Is this enough for database redundancy (assuming it was combined with
appropriate scripts for starting up database 2 if database 1 failed)

Jon

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