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Asset ID: 1-75-1012673.1
Update Date:2010-07-13
Keywords:

Solution Type  Troubleshooting Sure

Solution  1012673.1 :   Troubleshooting Sun StorEdge[TM] T3 configuration  


Related Items
  • Sun Storage T3+ Array
  •  
  • Sun Storage T3 Array
  •  
Related Categories
  • GCS>Sun Microsystems>Storage - Disk>Modular Disk - Other
  •  

PreviouslyPublishedAs
217426


Applies to:

Sun Storage T3 Array
All Platforms

Purpose

The purpose of this document is to supply the user with a set of steps to verify whether the array is supplying data access to all available Logical Units(LUNs) for any connected host.

Symptoms:

  • Offline device paths at Operating System level
  • Cannot see disk device at Operating System level


Last Review Date

June 14, 2010

Instructions for the Reader

A Troubleshooting Guide is provided to assist in debugging a specific issue. When possible, diagnostic tools are included in the document to assist in troubleshooting.

Troubleshooting Details


1. Validate that you can telnet into your array.

Reference <Document: 1012660.1> Troubleshooting Sun StorEdge[TM] T3, T3+ and 6120 Access Problems


NOTE: All Troubleshooting to verify the Array Status must be done via telnet, serial connection, t3extractor or explorer -w t3 extended.

2. Verify the correct array is being accessed.

Compare the output of port list with the World Wide Name(WWN), supplied in Step 2 of
<Document: 1099556.1> Verifying HBA Connectivity.  The WWN should match

storage-t3b:/:<1>port list
port targetid addr_type status host wwn
u1p1 1 hard online sun 50020f230000c21e
u2p1 2 hard online sun 50020f23000035df

If the array WWN does not match, you need to identify the correct array before proceeding.
If the array WWN matches, continue to Step 3.

3. Verify that all volumes are mounted using the vol stat command.

Volumes must be mounted to supply data access.  The example below shows that volume v1 is inaccessible.

Example:

storage-t3b:/:<1>vol stat
v1: unmounted
u1d05: mounted
u1d06: mounted
u1d07: mounted
u1d08: mounted
Standby: u1d09: mounted
v3: mounted
u2d05: mounted
u2d06: mounted
u2d07: mounted
u2d08: mounted
Standby: u2d09: mounted

Attempt to mount any volume in an unmounted status, using vol mount.

storage-t3b:/:<5>vol mount v1



  • If the vol mount succeeds, and this is a T3, proceed to Step 8.
  • If the vol mount succeeds, and this is a T3+, running 2.x firmware, proceed to Step 5.
  • If the vol mount succeeds, and this is a T3+ running 3.x firmware or a 6120, proceed to Step 6.
  • If the vol mount fails, continue to Step 4.

 4.  Verify whether drives have failed within the same volume.

The vol mount command will list the drives that make up the volume.  Use the fru stat command to check the state and status of the drives.  The drives, if optimal, will be listed as ready enabled.

  • If there are one or more drives in a state/status other than ready enabled, reference <Document: 1009745.1>  Troubleshooting Sun StorEdge[TM] T3, T3+, and 6120 Disk Faults.

  • If all the drives in the volume are optimal, proceed to Step 8.

5.  Verify that the setting enable_volslice is on

Use the sys list command to verify the setting.

storage-t3b:/:<1>sys list
controller : 2.0
blocksize : 64k
cache : auto
mirror : auto
mp_support : rw
naca : off
rd_ahead : off
recon_rate : med
sys memsize : 128 Mbytes
cache memsize : 1024 Mbytes
enable_volslice : on
fc_topology : auto
fc_speed : 1Gb
disk_scrubber : on
ondg : befit

  • If enable_volslice is on, continue to Step 6.
  • Otherwise, go to Step 8.

6.  Use volslice list to verify if a slice is created for the volumes

t3h:/:<1>volslice list

Slice Slice Num Start Blk Size Blks Capacity Volume

v2 2 0 141443584 67.445 GB v1

v1 1 0 20975360 10.000 GB v2


  • If there are no volume slices, then you will need to create them.  Data access will not be available without using the vol slices, as indicated by your array model and firmware revision.

Reference Sun StorEdge[TM] 6020 and 6120 Arrays System Manual
Reference Sun StorEdge[TM] T3+ Administrator's Manual, Firmware 2.1 Controller Firmware

  • If there are vol slices, continue to Step 7.
7.  Verify LUN Masking

Verify the LUN masking using the lun perm list command.

storage-t3b:/:<27>lun perm list
lun slice WWN GroupName GroupPerm WWNPerm EffectivePerm
-----------------------------------------------------------------------------------
0 0 default -- -- none none
1 1 default -- -- none none
1 1 210000e08b09b58c ralph none rw rw

Make sure that the WWN for the slice in the output matches the Port WWN from your
HBA. The EffectivePerm field should be rw, for this HBA.

  • If either the WWN or Effective Perm is not set correctly, use the lun perm command to set it correctly.

Reference Sun StorEdge[TM] 6020 and 6120 Arrays System Manual
Reference Sun StorEdge[TM] T3+ Administrator's Manual, Firmware 2.1 Controller Firmware

  • If the permissions are correct, then proceed to Step 8.



Note: Changes to the lun permissions may require action at the server level.

8. Verify the host port status on the array.

Use the port list command to show the status of the Fibre Channel(FC) port on each RAID controller.


storage-t3b:/:<1>port list
port targetid addr_type status host wwn
u1p1 1 hard online sun 50020f230000c21e
u2p1 2 hard online sun 50020f23000035df

  • If the status is offline, there is a connection problem between the array port and the HBA or FC Switch.
  • Otherwise, continue to Step 9.

9. Contact Oracle for support

Please collect a Solaris explorer and contact Oracle support. It is recommended that you collect the
data from the host that cannot access the array, by running:

/opt/SUNWexplo/explorer -w default,t3extended

This will collect both the connectivity data from the host side, as well as the array data collection.



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T3, T3+, lun masking, failed components, vol stat, Audited
Previously Published As
86682
Change History
Publishing Information
Date: 2007-11-13
User Name: 7058
Action: Approved
Comment: Internal link referenced in external section. Fixed.
Version: 6





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