Solstice DiskSuite 4.0 Administration Guide
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............................Contents


Preface
xv

1. Introduction
1
...Getting Help 2
...Supported Peripherals 2
......Disk Naming 3
...Definition of Terms 3

2. Installation and Setup
7
...Converting to Solstice DiskSuite 4.0 8
......Before You Begin the Installation 8
......After the Installation 10
...Preparing for Installation 11
......Local Installation 11
......Remote Installation 12
...Adding Packages 13
...Viewing Installed Packages 20
...Removing Packages 21
...Path Requirements 21
...Viewing AnswerBook Online Documentation 22
...Creating Replicas of the Metadevice State Database 22
......Creating Space for Metadevice State Database Replicas 22
......Creating Replicas on Metadevice Components 24
......Allocating Space From the swap Partition for Replicas 25
......Creating Replicas on Unused Disk Partitions 33
......What to Do Next 35

3. Overview of Solstice DiskSuite
37
...Elements of the Metadisk Driver 38
......Metadevices 39
......Concatenation and Striping 40
......Mirroring 41
......UNIX File System Logging 42
......Hot Spares 45
......Disksets 45
......RAID Devices 45
...State Database Replicas 46
...Expanding Mounted File Systems 47
...DiskSuite Commands and Utilities 47
...System Files Associated with DiskSuite 49

4. Concatenating and Striping
51
...Using Concatenations and Stripes 51
...Defining Metadevice Configurations 53
......Concatenated Metadevices 53
......Striped Metadevices 54
......Metadevices Defined as Concatenated Stripes 56
...Replacing Failed Components 57
...Clearing Concatenations and Stripes 58
...Hardware and Software Considerations 59
......Assigning Interlace Values 59
......Mixing Different Size Components 59
......Using Components With Different Geometry 60
......Controllers 60
......Bus Load 60
...Examples 61
......Striping Three Components 61
......Concatenating Eight Components 62
......Concatenating Stripes of Components 63

5. Mirroring
65
...Operation of Mirrors 66
......Defining Metamirrors 69
......Metamirror Options 70
......Resyncing Mirrors 72
......Checking the Status of Mirrors 73
......Mirroring Existing File Systems 77
......Unmirroring File Systems 77
...root, swap, and /usr Mirroring 78
......Mirroring /usr 79
......Mirroring root 81
......Mirroring swap 91
......Unmirroring root and swap File Systems 92
...Reconfiguring Submirrors 94
......Attaching and Detaching Submirrors 95
......Placing Submirrors Online and Offline 95
......Replacing and Enabling Submirror Components 96
......Changing Metamirror and Submirror Options 97
...Using Mirrors for Online Backup 98
......Performing Online Backups -- for Mirrors 98
......Performing Online Backups -- for Nonmirrors 100
...Examples 103
......Mirroring an Existing File System 103
......Adding Submirrors 105
......Watching the Progress of a Resync Using metastat 106

6. UFS Logging
109
...Overview of UFS Logging 110
...Setting Up UFS Logging 110
......How Much Log Space is Required? 111
......Which File Systems Should Be Logged? 111
......Where Should the Log Be Located? 112
......How To Set Up UFS Logging 112
......How to Share a Log Between File Systems 114
......Removing UFS Logging 115
......Logging a File System That Cannot Be Unmounted 117
......Removing Logging from a File System That Cannot be
........Unmounted 118
...Creating Metatrans Namespace for Exported File Systems 119
...How DiskSuite Commands Relate to Logging 120
...Using Metadevices and Metamirrors 121
...Metatrans Device States 122
...Recovering from Device Errors 122
...Recovering from File System Panics 124

7. Hot Spares
125
...Overview of Hot Spares 125
...Defining Hot Spares 126
...Hot Spare Conditions to Avoid 128
...Manipulating Hot Spare Pools 128
......Adding Hot Spares 129
......Deleting Hot Spares 129
......Replacing Hot Spares 130
......Enabling Hot Spares 131
......Changing the Associated Hot Spare Pool 131
......Checking the Status of Hot Spares 132
...Examples 132
......Setting up Hot Spare Pools 133
......Adding Hot Spares to Hot Spare Pools 134
......Deleting Hot Spares From Hot Spare Pools 134
......Replacing Hot Spares Within Hot Spare Pools 135

8. Disksets
137
...Overview of Disksets 138
......Database Replicas and Disksets 139
......Naming Conventions 139
......DiskSuite Commands and Disksets 140
...Defining Disksets 141
...Administering Disksets 144
......Reserving a Diskset 144
......Releasing a Diskset 145
......Removing Hosts and Drives From a Diskset 146
......Adding Drives or Hosts to an Existing Diskset 148

9. RAID Devices
151
...RAID Overview 151
...Operation of RAID 152
...Creating RAID Metadevices 153
...Resyncing RAID Devices 153
...Reconfiguring RAID Devices 154
......Concatenating Components 154
......Replacing Components 155
......Changing Hot Spare Pool Association 156
...Checking Status 156
...Hardware and Software Considerations 158
......Assigning Interlace Values 158
......Concatenating to a Device 158
......Write Performance 159
......Performance of a Degraded Device 159
......RAID as a Component to a Device 159
......Mixing Different Size Components 159
......Using Components with Different Geometry 160
......Controllers 160
...Examples 160
......Defining a RAID device 161
......Concatenating to a RAID Device 162
......Recovering from Component Errors 164

10. State Database Replicas
167
...Overview of the State Database Replicas 168
...Basic State Database Operation 169
...Planning Locations of Replicas 170
...Creating a State Database 171
...Creating Replicas 171
...Removing Replicas 172
...Checking the Status of Replicas 173
...Examples 174
......State Database Replicas on a New System 174
......State Databases on Existing Systems 175

11. Expanding a File System
177
...File System Expansion Overview 177
...Nonexpandable File Systems 178
...Adding Components 178
...The growfs Command 179
...Examples 179
......Expanding a Nonmetadevice Component 179
......Expanding a Mounted File System 181
......Expanding a Mounted File System
........ to an Existing Metamirror 181
......Expanding an Unmounted File System 182
......Expanding a Mounted File System Using Stripes 183

12. Configuration Guidelines
185
...Performance Considerations 185
...Availability Considerations 187
...Capacity Considerations 189
...Labeled Partitions 190
...Security Considerations 190
...Compatibility Considerations 190

A. Solstice DiskSuite Files
191

B. Solstice DiskSuite Messages
197

C. Recovery From Failed Boots
231

D. Upgrading to Other Solaris Versions
247

E. Using Solstice DiskSuite 4.0 with the
...SPARCstorage Array 100 251
F. Man Pages 255

Index
257