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Learning RHEL Networking

You're reading from   Learning RHEL Networking Gain Linux administration skills by learning new networking concepts in Red Hat Enterprise Linux 7

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Product type Paperback
Published in Jun 2015
Publisher
ISBN-13 9781785287831
Length 216 pages
Edition 1st Edition
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Toc

Table of Contents (13) Chapters Close

Preface 1. Introducing Enterprise Linux 7 FREE CHAPTER 2. Configuring Network Settings 3. Configuring Key Network Services 4. Implementing iSCSI SANs 5. Implementing btrfs 6. File Sharing with NFS 7. Implementing Windows Shares with Samba 4 8. Integrating RHEL 7 into Microsoft Active Directory Domains 9. Deploying the Apache HTTPD Server 10. Securing the System with SELinux 11. Network Security with firewalld Index

Optimizing btrfs for solid state drives


When creating a btrfs filesystem on multiple SSDs, using the single -m option will ensure that the metadata is not duplicated. On an SSD, duplicating metadata is thought of as a waste of space and has an overhead that can lessen the life of the disk, as shown in the following code:

# mkfs.btrfs -m single /dev/sdb

The second way is to use the ssd mount option. This option will set a few performance options:

  • Allows large metadata clusters

  • Allows more sequential data allocation

  • Disables leaf writing to match key and block order in the b-tree database

  • Commits b-tree log fragments without batching multiple processes

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