Library Table of Contents Index Previous Page (Alt-p) Next Page (Alt-n) Comments

Displaying LUN information

Types of information you can display  Top

You can display the following types of information about LUNs:

Displaying command-line help  Top

To display command-line help, complete the following steps.

Step

Action
1

On the filer's command line, enter the following command:

lun help

Result

A list of all LUN subcommands is displayed:

lun help          - List LUN (logical unit of block storage) commands

lun clone         - Manage LUN cloning

lun comment       - Display/Change descriptive comment string

lun create        - Create a LUN

lun destroy       - Destroy a LUN

lun map           - Map a LUN to an initiator group

lun move          - Move (rename) LUN

lun offline       - Stop block protocol access to LUN

lun online        - Restart block protocol access to LUN

lun resize        - Resize LUN

lun serial        - Display/change LUN serial number

lun set           - Manage LUN properties

lun setup         - Initialize/Configure LUNs, mapping

lun share         - Configure NAS file-sharing properties

lun show          - Display LUNs

lun snap          - Manage LUN and Snapshot interactions

lun stats         - Displays or zeros read/write statistics for LUN

lun unmap         - Remove LUN mapping
2

To display the syntax for any of the subcommands, enter the following command:

lun help subcommand

Example

lun help show

Displaying statistics  Top

To display the number of data reads, data writes, and operations per second for LUNs, complete the following step.

Step

Action
1

Enter the following command:

lun stats {-z|-k} [lun-path ...]

-k displays the statistics in KBs.

Note
The statistics start at zero at boot time.

-z resets the counter at any time.

Sample Result

lun stats -k

     /vol/vol1/lun0

          Read (kBytes)        Write (kBytes)       Ops

          10241                26159                3290

    /vol/vol1/lun1

          Read (kBytes)        Write (kBytes)       Ops

          10241                26279                3313

Displaying status and characteristics  Top

To display status and characteristics about LUNs, complete the following steps.

Step

Action
1

On the filer's command line, enter the following command to display LUN status and characteristics:

lun show -v

Sample display


 

        /vol/vol1/lun0 5g (5368709120)    (r/w, online, mapped)


 

                Comment: "First LUN"


 

                Serial#: OcmePIdQwRb1


 

                Share: none


 

                Space Reservations: enabled


 

                Multiprotocol Type: windows


 

                Maps: windows-igroup0=0


 

        /vol/vol1/lun1 100m (104857600)     (r/w, online, mapped)


 

                Comment: "Second LUN"


 

                Serial#: OcmePIdQuEtX


 

                Share: none


 

                Space Reservations: enabled


 

                Multiprotocol Type: windows


 

                Maps: windows-igroup1=0







 
2


On the filer's command line, enter the following command to display LUN mapping information:

 

lun show -m



 Result


 


 

LUN path                   Mapped to               LUN ID


 

--------------------------------------------------------


 

/vol/vol1/lun0             windows-igroup0              0


 

/vol/vol1/lun1             windows-igroup1              0


 

/vol/vol1/qtree1/lun2      windows-igroup2              0


 

/vol/vol1/qtree1/lun3      swindows-igroup2             1







 





Displaying space reservation status for LUNs
 Top



 

To display the status of space reservations for LUNs in a volume, complete the following step.

 





Step




Action






 
1


Enter the following command:

 

lun set reservation lun-path







 






Library
Table of Contents
Index
Previous Page (Alt-p)
Next Page (Alt-n)
Comments





Copyright © 1994-2003, Network Appliance, Inc.   All rights
reserved.

Part No. 210-00571

File: c3lun-i3.htm

Last updated: 11/21/03 17:05:22