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12 0 Appendix B Using the Command Line
To display an extent count without defragmenting:
$ snfsdefrag -c [-K affinity] [-r] target [target] [...]
To prune a le (remove allocated extents beyond the end of le):
$ snfsdefrag -p [-D] [-v] [-q] [-K affinity] [-m count] [-r] target
[target] [...]
To list les that are candidates for defragmentation:
$ snfsdefrag -l [-D] [-v] [-K affinity] [-m count] [-r]
target [target] [...]
Parameter Description
-c
Display an extent count but don’t defragment
target.
-D
Display debugging messages.
-d
Operate on les with other than the current
depth.
-e
Report extents without defragmenting.
-K affinity
Only operate on les with the specied storage
pool anity.
affinity – the anity key (in Xsan, the anity
key is the same as the name of the storage pool)
You can use the
cvadmin show long
command to see a storage pool’s anity key.
-k affinity
Allocate new extents on the storage pool with
this anity.
-l
List les that might benet from
defragmentation.
-m count
Only operate on les with more than count
extents.
-p
Prune instead of defragment.
-q
Suppress messages.
-r [target]
Operate recursively to defragment all les in all
folders within the specied target folder.
-s
Allocate new extents on block boundaries.
-v
Display all available information and status
during defragmentation.
Examples
Count the extents in the le datale:
$ snfsdefrag -c datafile
- Administrator Guide 1
- Contents 3
- 4 Contents 4
- Contents 5 5
- 6 Contents 6
- Contents 7 7
- About This Book 9
- What’s New in Xsan 2 10
- Version Compatibility 10
- Overview of Xsan 13
- Xsan Storage Area Networks 14
- Shared SAN Volumes 15
- Metadata Controllers 15
- Network Connections 15
- How Xsan Storage Is Organized 16
- Storage Pools 17
- Anities and Anity Tags 17
- Folders with Anities 18
- Security 19
- Expanding Storage 20
- Xsan Capacities 20
- Supported Computers 21
- Supported Storage Devices 22
- Fibre Channel Fabric 22
- Ethernet TCP/IP Network 23
- Directory Services 24
- Planning Your SAN 25
- Conguring RAID Systems 34
- Preparing LUNs 37
- Using Xsan Admin 39
- SAN and Volume Setup Summary 39
- Step 5: Set Up RAID Systems 42
- Step 8: Congure the SAN 44
- Step 9: Create a Volume 46
- Renaming a SAN 49
- Removing a SAN 49
- Managing Multiple SANs 50
- Setting Up Additional SANs 50
- Managing SAN Storage 51
- Adding a Volume to a SAN 53
- Adding LUNs to a Storage Pool 55
- Setting Up a Folder Anity 57
- Removing an Anity 58
- Enabling Extended Attributes 61
- Renaming a Volume 62
- -f option: 64
- Defragmenting a Volume 64
- command to check the 65
- Repairing a Volume 66
- Destroying a Volume 66
- Managing Clients and Users 67
- Adding an Xsan Serial Number 68
- Mounting a Volume on a Client 70
- Managing Users and Groups 71
- Adding SAN Users 72
- Deleting SAN Users 72
- Creating Groups 73
- Deleting Groups 73
- Changing Group Membership 73
- Unmount button 75
- Select the volume 75
- Select to view 75
- computers that have 75
- the volume mounted 75
- Removing a Client from a SAN 77
- About Xsan Quotas 80
- Checking User Quota Status 81
- Helping Users Check Quotas 83
- Connection 84
- Action menu 84
- Managing Metadata Controllers 86
- Adding a Metadata Controller 87
- $ sudo cvadmin -e select 89
- Monitoring Controller Status 92
- Monitoring SAN Status 93
- Checking Volume Status 94
- Monitoring RAID Devices 94
- Available space 95
- Graphing SAN Resource Usage 96
- Viewing Xsan Logs 98
- Checking Volume Clients 99
- Solving SAN Problems 100
- $ sudo cvadmin 101
- Interruption 103
- StorNext Clients 105
- Terminology 106
- Licensing 106
- Using the Command Line 108
- Notation Conventions 109
- Xsan Commands 110
- To enter interactive mode: 111
- ” below 116
- Examples 120
- Mounting an Xsan Volume 121
- Xsan Conguration Files 122
- Glossary 123
- 12 4 Glossary 124
- Glossary 12 5 125
- Index 12 7 127
- 12 8 Index 128
- Index 12 9 129
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