global disk services primecluster fujitsu …...global disk services i/o monitor option gds i/o...

J2UL-2506-01ENZ0(00)December 2019

Linux

FUJITSU SoftwarePRIMECLUSTER Global Disk Services

Configuration and AdministrationGuide 4.6

PrefaceThis manual describes the function, setting up, and managing of the following software:

Software (Feature) Abbreviation Description

Global Disk Services GDSVolume management software provided byPRIMECLUSTER.

Global Disk Services Snapshot GDS SnapshotOptional software of GDS provided byPRIMECLUSTER GD Snapshot.

Global Disk Services I/O MonitorOption

GDS I/O MonitorOption

Optional software of GDS provided byPRIMECLUSTER GD I/O Monitor Option.

Purpose

This manual aims to help users understand GDS, GDS Snapshot, and GDS I/O Monitor Option, including environment configuration,operation, and maintenance.

Target Reader

This manual is devoted to all users who will operate and manage GDS, GDS Snapshot, and GDS I/O Monitor Option, and programmers whowill create applications running in GDS environments.

Organization

This manual consists as follows:

Headers Contents

Chapter 1Functions

Explains the features and function overview of GDS, GDS Snapshot, and GDS I/O Monitor Option.

Chapter 2Structure

Explains the concepts and rules of objects used by GDS, GDS Snapshot, and GDSI/O Monitor Option.

Chapter 3Notes on Design

Explains notes when designing the system where GDS, GDS Snapshot, and GDSI/O Monitor Option are used.

Chapter 4Installation

Explains how to install GDS, GDS Snapshot, and GDS I/O Monitor Option.

Chapter 5GDS Management View

Explains how to start and exit GDS Management View and its screenconfiguration and functions.

Chapter 6Settings

Explains how to set up GDS, GDS Snapshot, and GDS I/O Monitor Option.

Chapter 7Operation and Maintenance

Explains how to operate and maintain GDS, GDS Snapshot, and GDS I/OMonitor Option.

Chapter 8Configuration Change

Explains how to change the configuration of GDS, GDS Snapshot, and GDS I/OMonitor Option.

Chapter 9Removing Configuration

Explains how to remove the configuration of GDS, GDS Snapshot, and GDS I/OMonitor Option.

Appendix AGeneral Notes

Explains general notes for using GDS, GDS Snapshot, and GDS I/O MonitorOption.

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Headers Contents

Appendix BCommand Reference

Explains the commands available in GDS, GDS Snapshot, and GDS I/O MonitorOption, and the PRIMECLUSTER commands used for registering and deletingthe shared disk resources.

Appendix CGDS Messages

Explains the contents, possible causes, and resolutions for GDS messages thatappear when setting or operating GDS, GDS Snapshot, and GDS I/O MonitorOption.

Appendix DTroubleshooting

Explains resolutions for abnormality of objects and physical disks managed byGDS.

Appendix EFrequently AskedQuestions (FAQ)

Lists frequently asked questions regarding GDS, GDS Snapshot, and GDS I/OMonitor Option.

Appendix FSystemd Services andStartup Daemons in GDS

Explains the GDS systemd service and startup daemon.

Appendix GRelease Information

Explains new features, manual update details, and changes in specificationsdepending on the versions of GDS, GDS Snapshot, and GDS I/O Monitor Option.

GlossaryExplains terminologies of GDS, GDS Snapshot, and GDS I/O Monitor Option.Please refer to it as necessary.

GDS: Global Disk ServicesGDS Snapshot: Global Disk Services SnapshotGDS I/O Monitor Option: Global Disk Services I/O Monitor Option

Related documentation

Please refer to the following documents according to need.

- PRIMECLUSTER Concepts Guide

- PRIMECLUSTER Installation and Administration Guide

- PRIMECLUSTER Installation and Administration Guide Cloud Services

- PRIMECLUSTER Cluster Foundation (CF) Configuration and Administration Guide

- PRIMECLUSTER Reliant Monitor Services (RMS) with Wizard Tools Configuration and Administration Guide

- PRIMECLUSTER Web-Based Admin View Operation Guide

- PRIMECLUSTER Global File Services Configuration and Administration Guide

- Software Release Guide PRIMECLUSTER GD

- PRIMECLUSTER GD Installation Guide

- Software Release Guide PRIMECLUSTER GD Snapshot

- PRIMECLUSTER GD Snapshot Installation Guide

- Software Release Guide PRIMECLUSTER GD I/O Monitor Option

- PRIMECLUSTER GD I/O Monitor Option Installation Guide

- FJQSS (Information Collection Tool) User's Guide

- PRIMEQUEST Virtual Machine Function User's Manual

Manual Printing

Use the PDF file to print this manual.

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Adobe Reader is required to read and print this PDF file. To get Adobe Reader, see Adobe Systems Incorporated's website.

Symbol

The following conventions are used in this manual:

- [EFI] indicates that the description is for UEFI boot environment.

- [IOmonitor] indicates that the description is for GDS I/O Monitor Option.

- [RHEL7] indicates that the description is for RHEL7.

- [RHEL8] indicates that the description is for RHEL8.

Point

Main points are explained.

Note

Items that require attention are explained.

Information

Useful information is given.

See

Manual names and sections of this manual you should refer to are given.

Abbreviated name

- Device Mapper Multipath is abbreviated as DM-MP.

- ETERNUS SF AdvancedCopy Manager is abbreviated as ACM.

- FUJITSU Cloud Service for OSS is abbreviated as FJCS for OSS.

- PRIMEQUEST 3000/2000 Series are abbreviated as PRIMEQUEST.

- Red Hat Enterprise Linux is abbreviated as RHEL.

- Red Hat OpenStack Platform is abbreviated as RHOSP.

- The following Symfoware products are abbreviated as Symfoware Server(Native).

- Symfoware Server V11 or earlier

- Symfoware Server Standard Edition(Native interface)

- Symfoware Server Enterprise Edition(Native interface)

Export Controls

Exportation/release of this document may require necessary procedures in accordance with the regulations of your resident country and/orUS export control laws.

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Trademarks

Microsoft, Windows, Microsoft Edge, and Internet Explorer are registered trademarks or trademarks of Microsoft Corporation in the UnitedStates and other countries.All other trademarks are property of their respective owners.

Linux(R) is the registered trademark of Linus Torvalds in the U.S. and other countries.

Red Hat is a registered trademark of Red Hat, Inc. in the U.S. and other countries.

Oracle and Java are registered trademarks of Oracle and/or its affiliates. Other names may be trademarks of their respective owners.

Dell EMC, EMC, PowerPath, SAN Manager, SRDF, Symmetrix, and TimeFinder are trademarks of Dell Inc. or its subsidiaries.

VMware and other VMware product names are trademarks or registered trademarks of VMware in the United States and/or otherjurisdictions.

Other product names that appear in this manual are product names, trademarks, or registered trademarks of respective companies.

Notice

- No part of this manual may be reproduced without permission.

- This manual is subject to change without advance notice.

Date of publication and edition

December 2019, First edition

All Rights Reserved, Copyright (C) FUJITSU LIMITED 2019.

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ContentsChapter 1 Functions................................................................................................................................................................. 1

1.1 GDS Features.......................................................................................................................................................................................11.2 Functions for High Availability...........................................................................................................................................................2

1.2.1 Disk Mirroring.............................................................................................................................................................................. 31.2.1.1 System Disk Mirroring [EFI].................................................................................................................................................31.2.1.2 Mirroring between Disk Array Unit...................................................................................................................................... 41.2.1.3 Shared Disk Mirroring........................................................................................................................................................... 51.2.1.4 Mirroring among Servers.......................................................................................................................................................6

1.2.2 Hot Spare...................................................................................................................................................................................... 71.2.3 Hot Swap.......................................................................................................................................................................................81.2.4 Just Resynchronization Mechanism (JRM).................................................................................................................................. 9

1.3 Functions for High Manageability.....................................................................................................................................................101.3.1 Operation Management Interface............................................................................................................................................... 111.3.2 Centralized Disk Management....................................................................................................................................................111.3.3 Name Management..................................................................................................................................................................... 121.3.4 Single System Image Environment.............................................................................................................................................131.3.5 Access Control............................................................................................................................................................................14

1.3.5.1 Class Scope.......................................................................................................................................................................... 141.3.5.2 Starting and Stopping Volume.............................................................................................................................................141.3.5.3 Access Mode........................................................................................................................................................................151.3.5.4 Lock Volume....................................................................................................................................................................... 15

1.3.6 Realizing Large Capacity and I/O Load Balancing.................................................................................................................... 161.3.6.1 Logical Partitioning............................................................................................................................................................. 161.3.6.2 Disk Concatenation..............................................................................................................................................................161.3.6.3 Disk Striping........................................................................................................................................................................ 171.3.6.4 Combining Disk Striping with Mirroring............................................................................................................................ 17

1.3.7 Online Volume Expansion..........................................................................................................................................................181.3.8 Snapshots by Slice Detachment..................................................................................................................................................20

1.4 GDS Snapshot Features..................................................................................................................................................................... 221.5 Proxy Volume.................................................................................................................................................................................... 22

1.5.1 Snapshot by Synchronization......................................................................................................................................................241.5.2 Snapshot Function with No Load to Server/SAN.......................................................................................................................281.5.3 Instant Snapshot by OPC............................................................................................................................................................ 291.5.4 Instant Restore............................................................................................................................................................................ 301.5.5 Online Disk Migration................................................................................................................................................................ 321.5.6 Creating Alternative Boot Environment [EFI]........................................................................................................................... 33

1.6 Shadow Volume.................................................................................................................................................................................341.6.1 Accessing Volumes from External Server..................................................................................................................................341.6.2 Using Copy Function of Disk Unit............................................................................................................................................. 35

1.7 GDS I/O Monitor Option Features.................................................................................................................................................... 361.8 I/O Response Time Assurance [IOmonitor]...................................................................................................................................... 38

1.8.1 I/O response delay for one slice on the mirror volume...............................................................................................................381.8.2 I/O response delay on all slices of the mirror volume................................................................................................................ 391.8.3 I/O response delay for the slice of a single volume....................................................................................................................40

Chapter 2 Structure................................................................................................................................................................ 422.1 SDX Object........................................................................................................................................................................................42

2.1.1 Disk Class................................................................................................................................................................................... 422.1.2 SDX Disk....................................................................................................................................................................................462.1.3 Disk Group..................................................................................................................................................................................492.1.4 Logical Volume.......................................................................................................................................................................... 522.1.5 Logical Slice............................................................................................................................................................................... 57

2.2 GDS Snapshot Objects.......................................................................................................................................................................612.2.1 Proxy Object............................................................................................................................................................................... 612.2.2 Shadow Object............................................................................................................................................................................65

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2.2.2.1 Shadow Class.......................................................................................................................................................................662.2.2.2 Shadow Disk........................................................................................................................................................................ 682.2.2.3 Shadow Group..................................................................................................................................................................... 712.2.2.4 Shadow Volume...................................................................................................................................................................722.2.2.5 Shadow Slice........................................................................................................................................................................77

2.3 Rules.................................................................................................................................................................................................. 782.3.1 Object Name............................................................................................................................................................................... 782.3.2 Number of Classes...................................................................................................................................................................... 792.3.3 Number of Disks.........................................................................................................................................................................792.3.4 Number of Groups...................................................................................................................................................................... 802.3.5 Number of Volumes....................................................................................................................................................................802.3.6 Number of Keep Disks [EFI]......................................................................................................................................................802.3.7 Creating Group Hierarchy.......................................................................................................................................................... 802.3.8 Disk Label...................................................................................................................................................................................822.3.9 Disk Size..................................................................................................................................................................................... 832.3.10 Group Size................................................................................................................................................................................ 842.3.11 Volume Size..............................................................................................................................................................................842.3.12 Proxy Configuration Preconditions.......................................................................................................................................... 852.3.13 Number of Proxy Volumes....................................................................................................................................................... 852.3.14 Proxy Volume Size................................................................................................................................................................... 852.3.15 Proxy Group Size......................................................................................................................................................................86

Chapter 3 Notes on Design.................................................................................................................................................... 873.1 Guidelines.......................................................................................................................................................................................... 87

3.1.1 Guidelines for Mirroring.............................................................................................................................................................873.1.2 Guidelines for Striping................................................................................................................................................................873.1.3 Guidelines for Concatenation..................................................................................................................................................... 883.1.4 Guidelines for Combining Striping with Mirroring....................................................................................................................88

3.2 DM-MP (Device Mapper Multipath) ................................................................................................................................................883.3 Dell EMC Storage Units.................................................................................................................................................................... 883.4 Managing System Disks.................................................................................................................................................................... 893.5 System Disk Mirroring Preconditions............................................................................................................................................... 893.6 Initializing Disk................................................................................................................................................................................. 903.7 Keep Disk [EFI] ................................................................................................................................................................................903.8 Hot Spare........................................................................................................................................................................................... 91

3.8.1 Number of Disks within Class.................................................................................................................................................... 913.8.2 Hot Spare for Hierarchized Mirror Groups.................................................................................................................................933.8.3 Number of Spare Disks...............................................................................................................................................................943.8.4 Spare Disk Size...........................................................................................................................................................................943.8.5 Hot Spare for the Root Class...................................................................................................................................................... 943.8.6 Hot Spare for Proxy Volumes.....................................................................................................................................................943.8.7 Shadow Classes...........................................................................................................................................................................943.8.8 Disk Array Unit's Hot Spare Function........................................................................................................................................943.8.9 Spare Disk Failure...................................................................................................................................................................... 943.8.10 Synchronization Copying Invoked by Hot Spare..................................................................................................................... 943.8.11 Required Time for Synchronization Copying Invoked by Hot Spare...................................................................................... 943.8.12 Hot Spare Mode (Spare Disk Selection Mode)........................................................................................................................ 953.8.13 Spare Disk Manual Connection................................................................................................................................................ 96

3.9 Mirroring among Servers...................................................................................................................................................................973.9.1 Network Configuration............................................................................................................................................................... 973.9.2 Disk.............................................................................................................................................................................................983.9.3 Object Configuration.................................................................................................................................................................. 993.9.4 Configuration and Settings of the Cluster System......................................................................................................................993.9.5 Data Amount and Data Update Amount...................................................................................................................................1003.9.6 Required Time for Copying Processing....................................................................................................................................1003.9.7 Note...........................................................................................................................................................................................101

3.10 Volume Access Mode....................................................................................................................................................................101

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3.11 Data Consistency at the time of Simultaneous Access.................................................................................................................. 1013.12 Online Volume Expansion.............................................................................................................................................................1013.13 Disk Switch....................................................................................................................................................................................1033.14 Creating Snapshot by Slice Detachment........................................................................................................................................1033.15 Online Backup and Restoration Using Proxy Volume.................................................................................................................. 1033.16 Difference between Mirror Slice and Proxy Volume.................................................................................................................... 1053.17 Ensuring Consistency of Snapshot Data........................................................................................................................................1053.18 Instant Snapshot by OPC............................................................................................................................................................... 1053.19 Using Dell EMC TimeFinder or Dell EMC SRDF in Proxy Configuration................................................................................. 1063.20 Backing Up and Restoring through External Server..................................................................................................................... 1073.21 Virtual Environment...................................................................................................................................................................... 110

3.21.1 KVM Environment and VMware Environment..................................................................................................................... 1103.21.2 FJCS for OSS Environment....................................................................................................................................................1133.21.3 RHOSP Environment..............................................................................................................................................................113

3.22 Disaster Recovery.......................................................................................................................................................................... 1133.22.1 Building Disaster Recovery System....................................................................................................................................... 1143.22.2 Data Synchronization of Operation System and Disaster Recovery System..........................................................................1153.22.3 Switching to Disaster Recovery System.................................................................................................................................1153.22.4 Restoration to Operation System from Disaster Recovery System........................................................................................ 115

3.23 I/O Response Time Assurance [IOmonitor].................................................................................................................................. 116

Chapter 4 Installation............................................................................................................................................................1184.1 Notes on Installing OS.....................................................................................................................................................................1184.2 Installing GDS................................................................................................................................................................................. 1184.3 Installing GDS Snapshot..................................................................................................................................................................1184.4 Installing GDS I/O Monitor Option.................................................................................................................................................1184.5 Setting Up DM-MP..........................................................................................................................................................................1184.6 kdump Settings................................................................................................................................................................................ 1194.7 Configuring KVM Environment......................................................................................................................................................119

4.7.1 Adding Virtual Disk..................................................................................................................................................................1194.7.2 Major Number of the virtio Block Device................................................................................................................................1204.7.3 Setting up Shared Disk............................................................................................................................................................. 1204.7.4 Setting up virtio Block Device Used for Mirroring among Servers......................................................................................... 121

4.8 Configuring VMware Environment.................................................................................................................................................1214.9 Disk Setting for Performing Mirroring among Servers................................................................................................................... 122

4.9.1 Setting Tuning Parameters........................................................................................................................................................1224.9.2 Checking and Setting Required Packages................................................................................................................................ 1234.9.3 Creating iSCSI Target...............................................................................................................................................................1244.9.4 Establishing iSCSI Session.......................................................................................................................................................1284.9.5 Confirming the Correspondence of iSCSI Device Name of Each Node.................................................................................. 131

4.10 Preparation for Starting GDS Management View......................................................................................................................... 1324.10.1 Deciding the User Group........................................................................................................................................................ 132

4.10.1.1 User Group Types............................................................................................................................................................1324.10.1.2 Creating User Groups...................................................................................................................................................... 1324.10.1.3 Registering to a User Group............................................................................................................................................ 133

4.10.2 Setting up the Client Environment..........................................................................................................................................1334.10.3 Setting up the Web Environment............................................................................................................................................133

4.11 Settings to Use Dell EMC PowerPath........................................................................................................................................... 133

Chapter 5 GDS Management View...................................................................................................................................... 1355.1 Starting GDS Management View.................................................................................................................................................... 135

5.1.1 Starting Web-Based Admin View Operation Menu................................................................................................................. 1355.1.2 Web-Based Admin View Operation Menu Functions..............................................................................................................1365.1.3 Starting GDS Management View............................................................................................................................................. 137

5.2 Screen Configuration....................................................................................................................................................................... 1385.3 Menu Configuration and Functions................................................................................................................................................. 141

5.3.1 [General] Menu.........................................................................................................................................................................1415.3.2 [Settings] Menu.........................................................................................................................................................................142

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5.3.3 [Operation] Menu..................................................................................................................................................................... 1475.3.4 [View] Menu.............................................................................................................................................................................1505.3.5 [Help] Menu..............................................................................................................................................................................150

5.4 Icon Types and Object Status.......................................................................................................................................................... 1515.5 Object Information...........................................................................................................................................................................1545.6 Operation......................................................................................................................................................................................... 1555.7 Exiting GDS Management View..................................................................................................................................................... 158

Chapter 6 Settings................................................................................................................................................................1606.1 Creating Excluded Device List........................................................................................................................................................ 160

6.1.1 Excluded Device List................................................................................................................................................................1606.1.2 To Use DM-MP (Device Mapper Multipath)........................................................................................................................... 1606.1.3 To Use Dell EMC Storage Units.............................................................................................................................................. 1606.1.4 To Use Mirroring among Servers............................................................................................................................................. 162

6.2 Using iSCSI Disk.............................................................................................................................................................................1626.3 Shared Disk Resource Registration................................................................................................................................................. 162

6.3.1 What Is Shared Disk Resource Registration?........................................................................................................................... 1626.3.2 Flow of Shared Disk Resource Registration.............................................................................................................................1636.3.3 Preconditions and Important Points..........................................................................................................................................1636.3.4 Shared Disk Unit Resource Registration Procedure................................................................................................................. 164

6.4 Updating Physical Disk Information............................................................................................................................................... 1676.5 System Disk Mirroring Settings [EFI].............................................................................................................................................167

6.5.1 Checking Partition Configuration of System Disk................................................................................................................... 1686.5.2 Setting System Disk Mirroring................................................................................................................................................. 168

6.5.2.1 Setting with GDS Management View............................................................................................................................... 1686.5.2.1.1 Operation Flow........................................................................................................................................................... 1686.5.2.1.2 Operation Procedure................................................................................................................................................... 169

6.5.2.2 Setting with Commands.....................................................................................................................................................1756.5.3 Checking System Disk Settings................................................................................................................................................1756.5.4 Checking Physical Disk Information and Slice Numbers........................................................................................................ 1776.5.5 Collecting Backups of System Disk......................................................................................................................................... 1806.5.6 Backing up EFI Configuration Information..............................................................................................................................180

6.6 Class, Group, Volume Settings........................................................................................................................................................1816.6.1 Setting with GDS Management View...................................................................................................................................... 181

6.6.1.1 Single Volume Configuration Settings.............................................................................................................................. 1816.6.1.2 Other Volume Configuration Settings............................................................................................................................... 1816.6.1.3 Class Configuration........................................................................................................................................................... 1826.6.1.4 Cluster System Class Configuration.................................................................................................................................. 1866.6.1.5 Group Configuration..........................................................................................................................................................1886.6.1.6 Volume Configuration....................................................................................................................................................... 190

6.6.2 Setting with Commands............................................................................................................................................................1946.6.2.1 Creating Single Volume.....................................................................................................................................................1946.6.2.2 Creating Mirror Volume.................................................................................................................................................... 1946.6.2.3 Creating Netmirror Volume...............................................................................................................................................1956.6.2.4 Creating Large-Capacity Volume Using Concatenation................................................................................................... 1966.6.2.5 Creating Stripe Volume..................................................................................................................................................... 1966.6.2.6 Creating Mirror Volume by Combining Striping and Mirroring.......................................................................................197

6.7 File System Configuration............................................................................................................................................................... 1986.7.1 Creating the File System...........................................................................................................................................................1986.7.2 File System Auto Mount...........................................................................................................................................................1996.7.3 In Cluster Systems.................................................................................................................................................................... 200

6.8 raw Device Binding......................................................................................................................................................................... 2006.9 Volume's Block Special File Access Permission.............................................................................................................................2006.10 Proxy Configuration...................................................................................................................................................................... 202

6.10.1 Setting with GDS Management View.................................................................................................................................... 2036.10.1.1 Join...................................................................................................................................................................................2036.10.1.2 Relate............................................................................................................................................................................... 207

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6.10.2 Setting with Commands..........................................................................................................................................................2096.10.2.1 Join...................................................................................................................................................................................2096.10.2.2 Relate............................................................................................................................................................................... 209

6.11 Cloning...........................................................................................................................................................................................2106.11.1 Summary.................................................................................................................................................................................2106.11.2 Preconditions.......................................................................................................................................................................... 2116.11.3 Preparation.............................................................................................................................................................................. 2116.11.4 Copying Disk Data..................................................................................................................................................................2116.11.5 Setting up Copy Destination System...................................................................................................................................... 211

6.12 I/O Response Time Assurance [IOmonitor].................................................................................................................................. 2136.12.1 Setting I/O Response Time Assurance................................................................................................................................... 2136.12.2 Hang-up Monitoring Function................................................................................................................................................ 213

Chapter 7 Operation and Maintenance................................................................................................................................ 2157.1 Viewing Configurations/Statuses and Monitoring Statuses............................................................................................................ 215

7.1.1 Confirming SDX Object Configuration....................................................................................................................................2157.1.2 Viewing Proxy Object Configurations..................................................................................................................................... 2207.1.3 Monitoring Object Status..........................................................................................................................................................2247.1.4 Viewing Object Statuses...........................................................................................................................................................226

7.2 Synchronization Copy Operation of Mirror Volume.......................................................................................................................2267.2.1 Using GDS Management View................................................................................................................................................ 2267.2.2 Using Commands......................................................................................................................................................................230

7.3 Disk Swap........................................................................................................................................................................................ 2307.3.1 Setting with GDS Management View...................................................................................................................................... 230

7.3.1.1 Operation Flow.................................................................................................................................................................. 2307.3.1.2 Operation Procedure.......................................................................................................................................................... 231

7.3.2 Using Commands......................................................................................................................................................................2357.3.3 Swapping Disks of Netmirror Group........................................................................................................................................235

7.3.3.1 Hot Swap............................................................................................................................................................................2357.3.3.2 Cold Swap..........................................................................................................................................................................240

7.3.4 Swapping Physical Disks Registered with Shadow Classes.....................................................................................................2447.3.5 Notes......................................................................................................................................................................................... 244

7.3.5.1 Physical Disk Size............................................................................................................................................................. 2447.3.5.2 Physical Disks That Cannot Be Swapped..........................................................................................................................2447.3.5.3 LinuxSwapping Physical Disks when the Proxy Volume Is in a Mirroring Configuration.............................................. 2457.3.5.4 Swapping Internal Disks Registered with Root Classes or Local..................................................................................... 245

7.4 Backing Up and Restoring System Disk..........................................................................................................................................2467.4.1 Settings Before Backing Up..................................................................................................................................................... 2477.4.2 Backing Up [EFI]......................................................................................................................................................................2477.4.3 Settings After Backing Up........................................................................................................................................................2507.4.4 Settings Before Restoring......................................................................................................................................................... 2517.4.5 Restoring (When System Can Be Booted) [EFI]......................................................................................................................2517.4.6 Restoring (When System Cannot Be Booted) [EFI].................................................................................................................2547.4.7 Settings After Restoring............................................................................................................................................................256

7.5 Backing Up and Restoring System Disk through Alternative Boot Environment [EFI].................................................................2577.5.1 System Configuration............................................................................................................................................................... 2577.5.2 Summary of Backup................................................................................................................................................................. 2597.5.3 Summary of Restore................................................................................................................................................................. 2607.5.4 Summary of Procedure............................................................................................................................................................. 2617.5.5 Configuring Environment......................................................................................................................................................... 2617.5.6 Backing Up............................................................................................................................................................................... 2647.5.7 Restoring...................................................................................................................................................................................267

7.6 Backup (Offline).............................................................................................................................................................................. 2727.7 Backup (by Slice Detachment)........................................................................................................................................................ 273

7.7.1 Using GDS Management View................................................................................................................................................ 2737.7.1.1 Operation Flow.................................................................................................................................................................. 2737.7.1.2 Operation Procedure.......................................................................................................................................................... 274

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7.7.2 Using Commands......................................................................................................................................................................2797.8 Backup (by Synchronization).......................................................................................................................................................... 280


7.8.2 Using Commands......................................................................................................................................................................2887.9 Backup (by OPC).............................................................................................................................................................................291


7.9.2 Using Commands......................................................................................................................................................................2957.10 Restoring........................................................................................................................................................................................298

7.10.1 Using GDS Management View.............................................................................................................................................. 2987.10.1.1 Operation Flow................................................................................................................................................................ 2987.10.1.2 Operation Procedure........................................................................................................................................................ 299

7.10.2 Using Commands....................................................................................................................................................................3037.10.2.1 Without Using GDS Snapshot......................................................................................................................................... 3037.10.2.2 Using GDS Snapshot....................................................................................................................................................... 304

7.11 Backing Up and Restoring through Disk Unit's Copy Functions.................................................................................................. 3077.11.1 Configuring Environment....................................................................................................................................................... 3077.11.2 Backing Up............................................................................................................................................................................. 3087.11.3 Restoring from Backup Disks.................................................................................................................................................312

7.12 Backing Up and Restoring through External Server..................................................................................................................... 3137.12.1 Backing Up and Restoring Logical Volume with No Replication......................................................................................... 313

7.12.1.1 System Configuration...................................................................................................................................................... 3147.12.1.2 Summary of Backup........................................................................................................................................................ 3147.12.1.3 Summary of Restore........................................................................................................................................................ 3167.12.1.4 Summary of Procedure.................................................................................................................................................... 3177.12.1.5 Configuring Environment................................................................................................................................................ 3187.12.1.6 Backing Up...................................................................................................................................................................... 3197.12.1.7 Restoring..........................................................................................................................................................................323

7.12.2 Backing Up and Restoring through Snapshot by Slice Detachment...................................................................................... 3277.12.2.1 System Configuration...................................................................................................................................................... 3287.12.2.2 Summary of Backup........................................................................................................................................................ 3287.12.2.3 Summary of Restore........................................................................................................................................................ 3307.12.2.4 Summary of Procedure.................................................................................................................................................... 3317.12.2.5 Configuring Environment................................................................................................................................................ 3327.12.2.6 Backing Up...................................................................................................................................................................... 3337.12.2.7 Restoring..........................................................................................................................................................................337

7.12.3 Backing Up and Restoring Using Snapshots from Proxy Volume.........................................................................................3437.12.3.1 System Configuration...................................................................................................................................................... 3437.12.3.2 Summary of Backup........................................................................................................................................................ 3447.12.3.3 Summary of Restore from Proxy Volume....................................................................................................................... 3457.12.3.4 Summary of Restore from Tape.......................................................................................................................................3467.12.3.5 Summary of Procedure.................................................................................................................................................... 3487.12.3.6 Configuring Environment................................................................................................................................................ 3497.12.3.7 Backing Up...................................................................................................................................................................... 3507.12.3.8 Restoring from Proxy Volume.........................................................................................................................................3537.12.3.9 Restoring from Tape........................................................................................................................................................ 354

7.12.4 Backing Up and Restoring by Disk Unit's Copy Function..................................................................................................... 3587.12.4.1 System Configuration...................................................................................................................................................... 3597.12.4.2 Summary of Backup........................................................................................................................................................ 3607.12.4.3 Summary of Restore from BCV...................................................................................................................................... 3627.12.4.4 Summary of Restore from Tape.......................................................................................................................................3637.12.4.5 Summary of Procedure.................................................................................................................................................... 3657.12.4.6 Configuring Environment................................................................................................................................................ 3667.12.4.7 Backing Up...................................................................................................................................................................... 367

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7.12.4.8 Restoring form BCV........................................................................................................................................................3727.12.4.9 Restoring from Tape........................................................................................................................................................ 374

7.13 Backing Up and Restoring Object Configurations........................................................................................................................ 3797.13.1 Backing Up............................................................................................................................................................................. 3797.13.2 Restoring.................................................................................................................................................................................380

7.14 Volume Expansion.........................................................................................................................................................................3817.14.1 Volume Expansion of Local or Shared Class......................................................................................................................... 3817.14.2 Volume Expansion Using Commands [EFI].......................................................................................................................... 381

7.15 I/O Response Time Assurance [IOmonitor].................................................................................................................................. 3887.16 Mirroring Among Servers..............................................................................................................................................................388

7.16.1 I/O Error Due to Node Stop or Network Error....................................................................................................................... 3887.16.2 Stopping or Restarting the Node.............................................................................................................................................3897.16.3 Operation when the LEFTCLUSTER Node Exists................................................................................................................ 3897.16.4 Restoration from the LEFTCLUSTER State.......................................................................................................................... 3907.16.5 Lock Volume of the Netmirror Volume................................................................................................................................. 3907.16.6 Operation on Only One Node................................................................................................................................................. 3917.16.7 Restoration to 2-node Operation after Operation on Only One Node.................................................................................... 3917.16.8 Restoration when the Latest Disk Cannot Be Selected Automatically...................................................................................3917.16.9 Stopping both Nodes...............................................................................................................................................................3947.16.10 Restarting the Node during Synchronization Copying ........................................................................................................ 3957.16.11 Switchover of the Cluster Application when the Network is Disconnected.........................................................................3957.16.12 Configuration Change when the Node is Stopped................................................................................................................396

7.17 Maintenance in FJCS for OSS Environment................................................................................................................................. 3967.18 Removing Errata Kernel................................................................................................................................................................ 396

Chapter 8 Configuration Change..........................................................................................................................................3988.1 Changing Web-Based Admin View Settings...................................................................................................................................3988.2 Changing Object Configuration.......................................................................................................................................................398

8.2.1 Using GDS Management View................................................................................................................................................ 3988.2.1.1 Operation Flow.................................................................................................................................................................. 3988.2.1.2 Class Configuration........................................................................................................................................................... 3998.2.1.3 Group Configuration..........................................................................................................................................................4048.2.1.4 Volume Configuration....................................................................................................................................................... 407

8.2.2 Using Commands......................................................................................................................................................................4088.3 Changing the Settings of I/O Response Time Assurance [IOmonitor]........................................................................................... 409

8.3.1 Changing the I/O response time................................................................................................................................................4098.3.2 Changing the System Panic Mode............................................................................................................................................ 410

8.4 Deleting the Settings of the I/O Response Time Assurance [IOmonitor]....................................................................................... 4108.5 Migration from Single Nodes to Cluster System.............................................................................................................................4118.6 Server Migration.............................................................................................................................................................................. 4118.7 Storage Migration............................................................................................................................................................................ 413

8.7.1 Using GDS Snapshot Online Disk Migration...........................................................................................................................4138.7.1.1 Using GDS Management View......................................................................................................................................... 414

8.7.1.1.1 Operation Flow........................................................................................................................................................... 4148.7.1.1.2 Operation Procedure................................................................................................................................................... 415

8.7.1.2 Using Commands...............................................................................................................................................................4178.7.2 Using Copy Function of Storage Units and sdxconfig Command............................................................................................418

8.8 Changing Driver Major Number......................................................................................................................................................4208.8.1 Changing sfdsk Driver Major Number..................................................................................................................................... 4208.8.2 Changing sfdsklog Driver Major Number................................................................................................................................ 422

8.9 Upgrading Procedure for Dell EMC PowerPath..............................................................................................................................4228.10 Changing IP Addresses Used for Mirroring among Servers......................................................................................................... 4258.11 Adding Disks Used for Mirroring among Servers.........................................................................................................................427

Chapter 9 Removing Configuration...................................................................................................................................... 4309.1 Breaking Proxy................................................................................................................................................................................ 430

9.1.1 Using GDS Management View................................................................................................................................................ 4309.1.2 Using Commands......................................................................................................................................................................431

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9.2 Removing File System.....................................................................................................................................................................4319.3 Removing Volumes, Groups, and Classes.......................................................................................................................................432

9.3.1 Using GDS Management View................................................................................................................................................ 4329.3.1.1 Operation Flow.................................................................................................................................................................. 4329.3.1.2 Removing Volume.............................................................................................................................................................4329.3.1.3 Removing Group................................................................................................................................................................4349.3.1.4 Removing Class................................................................................................................................................................. 435

9.3.2 Using Commands......................................................................................................................................................................4369.4 System Disk Mirroring Cancellation [EFI]..................................................................................................................................... 437

9.4.1 Unmirroring System Disk with GDS Management View........................................................................................................ 4379.4.1.1 Unmirroring the System Disk [EFI].................................................................................................................................. 4379.4.1.2 Operation Flow.................................................................................................................................................................. 437

9.4.2 Cancellation with Commands...................................................................................................................................................4409.5 OS Re-installation............................................................................................................................................................................4429.6 Deleting iSCSI Settings Used for Mirroring among Servers...........................................................................................................443

9.6.1 Delete iSCSI devices................................................................................................................................................................ 4439.6.2 Deleting iSCSI Initiator Settings.............................................................................................................................................. 4469.6.3 Deleting iSCSI Target Settings.................................................................................................................................................447

Appendix A General Notes...................................................................................................................................................449A.1 Restraining Access to Physical Special File................................................................................................................................... 449A.2 Booting from a CD-ROM Device...................................................................................................................................................449A.3 Operation in Cluster System........................................................................................................................................................... 450A.4 Just Resynchronization Mechanism (JRM).................................................................................................................................... 450A.5 Backing Up and Restoring Object Configuration (sdxconfig)....................................................................................................... 452A.6 Physical Disk Recognition..............................................................................................................................................................452A.7 Object Operation When Using Proxy............................................................................................................................................. 453A.8 Using Advanced Copy Function in Proxy Configuration...............................................................................................................453A.9 Shadow Volume..............................................................................................................................................................................454A.10 Changing system run level............................................................................................................................................................457A.11 Root Class Operation [EFI].......................................................................................................................................................... 458A.12 Operating When There Is Disk in DISABLE Status or There Is Class not Displayed with sdxinfo Command.......................... 458A.13 Notes on Mirroring among Servers...............................................................................................................................................458

Appendix B Command Reference........................................................................................................................................459B.1 GDS Commands..............................................................................................................................................................................460

B.1.1 sdxclass - Class Operations......................................................................................................................................................460B.1.2 sdxdisk - Disk Operations........................................................................................................................................................ 460B.1.3 sdxgroup - Group Operations...................................................................................................................................................470B.1.4 sdxvolume - Volume Operations............................................................................................................................................. 474B.1.5 sdxslice - Slice Operations....................................................................................................................................................... 479B.1.6 sdxinfo - Display Object Configuration and Status Information............................................................................................. 482B.1.7 sdxattr - Change Objects Attributes......................................................................................................................................... 499B.1.8 sdxswap - Swap Disk............................................................................................................................................................... 507B.1.9 sdxfix - Restore Failed Object..................................................................................................................................................509B.1.10 sdxcopy - Synchronization Copying Operation..................................................................................................................... 512B.1.11 sdxroot - Root File System Mirroring Definition and Cancellation [EFI].............................................................................513B.1.12 sdxparam - Configuration Parameter Operations...................................................................................................................517B.1.13 sdxconfig - Object Configuration Operations........................................................................................................................ 518B.1.14 sdxdevinfo - Display Device Information of Internal Disk................................................................................................... 523

B.2 GDS Snapshot Commands..............................................................................................................................................................524B.2.1 sdxproxy - Proxy Object Operations........................................................................................................................................524B.2.2 sdxshadowdisk - Shadow Disk Operations.............................................................................................................................. 535B.2.3 sdxshadowgroup - Shadow Group Operations.........................................................................................................................539B.2.4 sdxshadowvolume - Shadow Volume Operations................................................................................................................... 543

B.3 Command Reference.......................................................................................................................................................................546B.3.1 clautoco

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