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SUSE Linux Enterprise Server 15 SP2

Storage Administration Guide

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

Publication Date: September 24, 2021
About This Guide
Available Documentation
Giving Feedback
Documentation Conventions
Product Life Cycle and Support
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
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 Monitoring 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
13 Toubleshooting software RAIDs
13.1 Recovery after Failing Disk is Back Again
IV Network Storage
14 iSNS for Linux
14.1 How iSNS Works
14.2 Installing iSNS Server for Linux
14.3 Configuring iSNS Discovery Domains
14.4 Starting the iSNS Service
14.5 Further Information
15 Mass Storage over IP Networks: iSCSI
15.1 Installing the iSCSI LIO Target Server and iSCSI Initiator
15.2 Setting Up an iSCSI LIO Target Server
15.3 Configuring iSCSI Initiator
15.4 Setting Up Software Targets Using targetcli-fb
15.5 Using iSCSI Disks when Installing
15.6 Troubleshooting iSCSI
15.7 iSCSI LIO Target Terminology
15.8 Additional Information
16 Fibre Channel Storage over Ethernet Networks: FCoE
16.1 Configuring FCoE Interfaces during the Installation
16.2 Installing FCoE and the YaST FCoE Client
16.3 Managing FCoE Services with YaST
16.4 Configuring FCoE with Commands
16.5 Managing FCoE Instances with the FCoE Administration Tool
16.6 Additional Information
17 NVMe over Fabric
17.1 Overview
17.2 Setting Up an NVMe over Fabric Host
17.3 Setting Up an NVMe over Fabric Target
17.4 Special Hardware Configuration
17.5 More Information
18 Managing Multipath I/O for Devices
18.1 Understanding Multipath I/O
18.2 Hardware Support
18.3 Planning for Multipathing
18.4 Multipath Management Tools
18.5 Configuring the System for Multipathing
18.6 Creating or Modifying the /etc/multipath.conf File
18.7 Configuring Default Policies for Polling, Queuing, and Failback
18.8 Blacklisting Non-Multipath Devices
18.9 Configuring User-Friendly Names or Alias Names
18.10 Configuring Path Failover Policies and Priorities
18.11 Configuring Multipath I/O for the Root Device
18.12 Configuring Multipath I/O for an Existing Software RAID
18.13 Using LVM2 on Multipath Devices
18.14 Best Practice
18.15 Troubleshooting MPIO
19 Managing Access Control Lists over NFSv4
A GNU Licenses
A.1 GNU Free Documentation License

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