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SUSE Linux Enterprise Server 12 SP5

Storage Administration Guide

Provides information about how to manage storage devices on a SUSE Linux Enterprise Server.

Publication Date: August 13, 2021
About This Guide
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I File Systems and Mounting
1 Overview of File Systems in Linux
1.1 Terminology
1.2 Btrfs
1.3 XFS
1.4 Ext2
1.5 Ext3
1.6 Ext4
1.7 ReiserFS
1.8 Other Supported File Systems
1.9 Large File Support in Linux
1.10 Linux Kernel Storage Limitations
1.11 Troubleshooting File Systems
1.12 Additional Information
2 Resizing File Systems
2.1 Use Cases
2.2 Guidelines for Resizing
2.3 Changing the Size of a Btrfs File System
2.4 Changing the Size of an XFS File System
2.5 Changing the Size of an Ext2, Ext3, or Ext4 File System
2.6 Changing the Size of a Reiser File System
3 Using UUIDs to Mount Devices
3.1 Persistent Device Names with udev
3.2 Understanding UUIDs
3.3 Additional Information
4 Multi-tier Caching for Block Device Operations
4.1 General Terminology
4.2 Caching Modes
4.3 bcache
4.4 lvmcache
II Logical Volumes (LVM)
5 LVM Configuration
5.1 Understanding the Logical Volume Manager
5.2 Creating Volume Groups
5.3 Creating Logical Volumes
5.4 Automatically Activating Non-Root LVM Volume Groups
5.5 Resizing an Existing Volume Group
5.6 Resizing a Logical Volume
5.7 Deleting a Volume Group or a Logical Volume
5.8 Using LVM Commands
5.9 Tagging LVM2 Storage Objects
6 LVM Volume Snapshots
6.1 Understanding Volume Snapshots
6.2 Creating Linux Snapshots with LVM
6.3 Monitoring a Snapshot
6.4 Deleting Linux Snapshots
6.5 Using Snapshots for Virtual Machines on a Virtual Host
6.6 Merging a Snapshot with the Source Logical Volume to Revert Changes or Roll Back to a Previous State
III Software RAID
7 Software RAID Configuration
7.1 Understanding RAID Levels
7.2 Soft RAID Configuration with YaST
7.3 Troubleshooting Software RAIDs
7.4 For More Information
8 Configuring Software RAID for the Root Partition
8.1 Prerequisites for Using a Software RAID Device for the Root Partition
8.2 Setting Up the System with a Software RAID Device for the Root (/) Partition
9 Creating Software RAID 10 Devices
9.1 Creating Nested RAID 10 Devices with mdadm
9.2 Creating a Complex RAID 10
10 Creating a Degraded RAID Array
11 Resizing Software RAID Arrays with mdadm
11.1 Increasing the Size of a Software RAID
11.2 Decreasing the Size of a Software RAID
12 Storage Enclosure LED Utilities for MD Software RAIDs
12.1 The Storage Enclosure LED Monitor Service
12.2 The Storage Enclosure LED Control Application
12.3 Additional Information
IV Network Storage
13 iSNS for Linux
13.1 How iSNS Works
13.2 Installing iSNS Server for Linux
13.3 Configuring iSNS Discovery Domains
13.4 Starting the iSNS Service
13.5 For More Information
14 Mass Storage over IP Networks: iSCSI
14.1 Installing the iSCSI LIO Target Server and iSCSI Initiator
14.2 Setting Up an iSCSI LIO Target Server
14.3 Configuring iSCSI Initiator
14.4 Using iSCSI Disks when Installing
14.5 Troubleshooting iSCSI
14.6 iSCSI LIO Target Terminology
14.7 Additional Information
15 Fibre Channel Storage over Ethernet Networks: FCoE
15.1 Configuring FCoE Interfaces during the Installation
15.2 Installing FCoE and the YaST FCoE Client
15.3 Managing FCoE Services with YaST
15.4 Configuring FCoE with Commands
15.5 Managing FCoE Instances with the FCoE Administration Tool
15.6 Additional Information
16 NVMe over Fabric
16.1 Overview
16.2 Setting Up an NVMe over Fabric Host
16.3 Setting Up an NVMe over Fabric Target
16.4 Special Hardware Configuration
16.5 More Information
17 Managing Multipath I/O for Devices
17.1 Understanding Multipath I/O
17.2 Hardware Support
17.3 Planning for Multipathing
17.4 Multipath Management Tools
17.5 Configuring the System for Multipathing
17.6 Creating or Modifying the /etc/multipath.conf File
17.7 Configuring Default Policies for Polling, Queuing, and Failback
17.8 Blacklisting Non-Multipath Devices
17.9 Configuring User-Friendly Names or Alias Names
17.10 Configuring Path Failover Policies and Priorities
17.11 Configuring Multipath I/O for the Root Device
17.12 Configuring Multipath I/O for an Existing Software RAID
17.13 Using LVM2 on Multipath Devices
17.14 Best Practice
17.15 Troubleshooting MPIO
18 Managing Access Control Lists over NFSv4
A GNU Licenses
A.1 GNU Free Documentation License

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