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Advanced Stack

In this chapter, we will learn to build and manipulate a fault-tolerant, high-performance foundation for our PostgreSQL clusters. We will cover the following recipes in this chapter:

Preparing systems for the stack
Starting with the Linux Volume Manager
Adding block-level replication
Incorporating the second LVM layer
Verifying a DRBD filesystem
Correcting a DRBD split brain
Formatting an XFS filesystem
Tweaking XFS performance
Maintaining an XFS filesystem
Using LVM snapshots
Switching live stack systems
Detaching a problematic node
Building and attaching a new node

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