Dell POWERVAULT MD3620I User Manual Page 199
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Configuration: Device Mapper Multipath for Linux 197
Using the MDSM software:
1
Map the host server to the MD3600i Series storage array.
2
Create the Virtual Disks.
3
Map newly created arrays to your host server.
NOTE: Any arrays configured with MDCU automatically get added to the list of
Devices in the PowerVault Modular Disk Storage Manager Enterprise Management
Window (EMW).
Device Mapper Configuration Steps
To complete the DM multipathing configuration and make storage available
to the Linux host server:
1
Scan for virtual disks. See "Scan for Newly Added Virtual Disks" on
page 198.
2
Display the multipath device topology. See "Display the Multipath Device
Topology Using the Multipath Command" on page 198.
3
Create a partition on a multipath device node. See "Create a New fdisk
Partition on a Multipath Device Node" on page 199.
4
Add a partition to DM. See "Add a New Partition to Device Mapper" on
page 200.
5
Create a file system on a DM partition. See "Create a File System on a
Device Mapper Partition" on page 201.
6
Mount a DM partition. See "Mount a Device Mapper Partition" on
page 201.
The following instructions show how to complete each of these steps.
In the following command descriptions <x> is used to indicate where a
substitution must be made. On Red Hat Enterprise Linux systems <x> is
the number assigned to the device. On SUSE Linux Enterprise Server
systems <x> is the letter(s) assigned to the device.
book.book Page 197 Tuesday, June 18, 2013 3:09 PM
- Owner’s Manual 1
- Notes, Cautions, and Warnings 2
- Contents 3
- 4 Contents 4
- 6 Configuration: About Your 6
- 8 Contents 8
- 10 Contents 10
- 12 Contents 12
- 16 Management: Installing 14
- 16 Contents 16
- 18 Contents 18
- Introduction 19
- Series Storage Array 20
- 22 Introduction 22
- Overview 23
- Hardware Features 24
- Hard-Drive Indicator Patterns 28
- RAID Controller Modules 31
- Battery Backup Unit 34
- Cache Functions and Features 35
- Write-Through Cache 36
- Array Terms and Concepts 37
- Physical Disks 38
- Physical Disk States 38
- Virtual Disks and Disk Groups 39
- Virtual Disk States 40
- RAID Levels 41
- Segment Size 43
- Virtual Disk Operations 43
- Consistency Check 44
- Media Verification 44
- Cycle Time 44
- Disk Group Operations 45
- Segment Size Migration 46
- Disk Group Defragmentation 47
- Disk Group Operations Limit 47
- Disk Migration 48
- Disk Roaming 50
- Advanced Features 51
- Virtual Disk Recovery 53
- Multi-Path Software 54
- Virtual Disk Ownership 55
- Load Balancing 56
- Configuration: Overview 61
- Enterprise Management Window 62
- Array Management Window 63
- Configuration: Overview 65 65
- 66 Configuration: Overview 66
- Out-of-Band Management 67
- Storage Arrays 68
- Setting Up Your Storage Array 70
- Locating Storage Arrays 72
- Setting a Password 73
- Password Guidelines 74
- Removing Storage Arrays 76
- Enabling Premium Features 76
- Displaying Failover Alert 77
- Configuring E-mail Alerts 79
- Configuring SNMP Alerts 82
- Battery Settings 83
- Configuration: Using iSCSI 87
- Creating CHAP Secrets 88
- Initiator CHAP Secret 89
- Target CHAP Secret 89
- Statistics 95
- Configuration: Event Monitor 97
- Configuring Host Access 99
- Using the Mappings Tab 100
- Defining a Host 101
- Removing Host Access 102
- Managing Host Groups 103
- Removing a Host Group 105
- Host Topology 105
- I/O Data Path Protection 107
- Virtual Disks 111
- Creating Disk Groups 112
- Locating a Disk Group 114
- Creating Virtual Disks 114
- Changing the I/O Type 120
- 512 KB) 121
- Creating a Security Key 124
- Changing a Security Key 126
- Saving a Security Key 128
- Validate Security Key 129
- Erasing Secure Physical Disks 130
- Hot Spares and Rebuild 132
- Global Hot Spares 132
- Hot Spare Operation 133
- Hot Spare Drive Protection 133
- Enclosure Loss Protection 134
- Host-to-Virtual Disk Mapping 135
- Restricted Mappings 143
- Disk Group 144
- Storage Partitioning 147
- Disk Group Expansion 148
- Virtual Disk Expansion 149
- Using Free Capacity 149
- Using Unconfigured Capacity 149
- Disk Group Migration 150
- Import Disk Group 151
- Storage Array Media Scan 152
- Changing Media Scan Settings 153
- Suspending the Media Scan 154
- Snapshot Virtual Disks 155
- Scheduled Snapshot Icons 158
- Simple Path 159
- Advanced Path 162
- Snapshot Repository Capacity 169
- PowerVault Modular 172
- Snapshot Rollback 174
- Command Line Options 175
- Starting a Snapshot Rollback 176
- Resuming a Snapshot Rollback 177
- Canceling a Snapshot Rollback 177
- Virtual Disk Copy 179
- Types of Virtual Disk Copies 180
- Online Copy 181
- Creating a Virtual Disk Copy 184
- Create Copy Wizard 185
- Failed Virtual Disk Copy 185
- Failed RAID Controller Module 186
- Copy Manager 186
- Copying the Virtual Disk 186
- Setting Copy Priority 188
- Stopping a Virtual Disk Copy 189
- Recopying a Virtual Disk 190
- Re-Copying the Virtual Disk 191
- Removing Copy Pairs 192
- Configuration: Device Mapper 197
- Multipath for Linux 197
- Using DM Multipathing Devices 198
- Window (EMW) 199
- Ready For Use 203
- Limitations and Known Issues 206
- Troubleshooting 207
- from DM 208
- Packages 209
- Firmware 210
- EMM Firmware 217
- Technology (SMART) 218
- Management: Installing Array 221
- Components 221
- Front Bezel (Optional) 222
- Hard Drives 223
- Installing a Hard-Drive Blank 224
- Removing a Hard Drive 224
- Installing a Hard Drive 226
- RAID Controller Module 229
- Control Panel 239
- Installing the Control Panel 240
- Backplane 241
- Installing the Backplane 244
- Management: System Interfaces 247
- Array Software 249
- Storage Array Support Data 253
- Retrieving Trace Buffers 254
- Collecting Physical Disk Data 256
- Event Log 257
- Recovery Guru 258
- Storage Array Profile 258
- Finding Nodes 261
- Using Go To 262
- Condition 263
- Locating a Physical Disk 266
- SMrepassist Utility 269
- Unidentified Devices 270
- Software 273
- Troubleshooting: Your Array 275
- Management Modules 277
- Troubleshooting Hard Drives 280
- Connections 281
- Conditions 283
- Invalid Storage Array 283
- ECC Errors 283
- PCI Errors 284
- Critical Conditions 284
- Noncritical Conditions 284
- Getting Help 285
- Documentation Feedback 286
- Index 285 287
- Index 286 288
- Index 287 289
- Index 288 290
- Index 289 291
- Index 290 292
- Index 291 293
- 292 Index 294
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