Sun Storage T3 Array
 
Sun Storage T3+ Array
 

PLA-Support>Sun Systems>DISK>Arrays>SN-DK: T3_6020_6120
 
_Old GCS Categories>Sun Microsystems>Storage - Disk>Modular Disk - Other
 

Applies to:

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

Troubleshooting Steps

1. Validate that you can telnet into your array.

Reference <Document: 1012660.1> Sun Storage 3000 and T3 Arrays: Troubleshooting Serial and Network Management Port Connections

2. Verify the correct array is being accessed.

Ensure you are connected to the correct array by verifying the WWN:

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

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.

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.

• 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.

enable_volslice : on

• 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

• 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 6020 and 6120 Arrays System Manual
Reference Sun StorEdge 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.

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

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

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.

• 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

References

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