Sun StorEdge[TM] 3310/3320/3510/3511: Duplicate disk entries from show disks output

Asset ID:	1-72-1002296.1
Update Date:	2014-05-09
Keywords:

Solution Type Problem Resolution Sure

Solution 1002296.1 : Sun StorEdge[TM] 3310/3320/3510/3511: Duplicate disk entries from show disks output

Applies to:

Sun Storage 3310 Array - Version Not Applicable to Not Applicable [Release N/A]
Sun Storage 3320 SCSI Array - Version Not Applicable to Not Applicable [Release N/A]
Sun Storage 3510 FC Array - Version Not Applicable to Not Applicable [Release N/A]
Sun Storage 3511 SATA Array - Version Not Applicable to Not Applicable [Release N/A]
All Platforms

Symptoms

On Sun StorEdge[TM] 3310, 3320, 3510 and 3511, sometimes show disk shows duplicate IDs for some disks as follows:

sccli> show disks
Ch Id Size Speed LD Status IDs Rev
------------------------------------------------------------------------
2 0 68.37GB 200MB ld0 ONLINE SEAGATE ST373307FSUN72G 0207
S/N 3HZ1EN0M00007347
2 1 68.37GB 200MB ld3 ONLINE FUJITSU MAP3735F SUN72G 1501
S/N 000449Q0HGNS
2 2 68.37GB 200MB ld1 ONLINE SEAGATE ST373307FSUN72G 0207
S/N 3HZ1F3A800007348
2 3 68.37GB 200MB ld1 ONLINE SEAGATE ST373307FSUN72G 0207
S/N 3HZ1D8Z800007348
2 4 68.37GB 200MB ld2 ONLINE SEAGATE ST373307FSUN72G 0207
S/N 3HZ1E5K500007348
2 5 68.37GB 200MB ld2 ONLINE SEAGATE ST373307FSUN72G 0207
S/N 3HZ1E1MN00007348
2 6 68.37GB 200MB ld3 ONLINE SEAGATE ST373307FSUN72G 0207
S/N 3HZ1ED0G00007347
2 7 68.37GB 200MB ld3 ONLINE SEAGATE ST373307FSUN72G 0207
S/N 3HZ1EVMQ00007347
2 8 68.37GB 200MB ld0 ONLINE FUJITSU MAP3735F SUN72G 1501
S/N 000449Q0HCKA
2 9 68.37GB 200MB ld3 ONLINE SEAGATE ST373307FSUN72G 0207
S/N 3HZ1DYMF00007347
2 10 68.37GB 200MB ld3 ONLINE SEAGATE ST373307FSUN72G 0207
S/N 3HZ1EN3900007347
2 11 68.37GB 200MB GLOBAL STAND-BY FUJITSU MAP3735F SUN72G 1701
S/N 000449Q0HGEC
3 11 68.37GB 200MB NONE USED FUJITSU MAP3735F SUN72G 1701
S/N 000449Q0HGEC

In this example, drive ID 11 displays twice and also the status of the drives show differently.

Cause

This problem can arise during disk replacement when both the drive channels (2 and 3) see the drive differently. Ideally, only one channel should be seen reporting all the drives.

Solution

When this problem happens, first check the status of the drives by connecting to the array using telnet or serial port and then selecting view and edit scsi Drives from the main menu.

Check the status of the drive in question if it also shows up twice. If this is the case, then the only way to rectify this and have all the drives show up correctly on one channel is to reset the array. Use the sccli command that will ensure that the cache is flushed to the disks before actually resetting the array.

For more information on the sccli shutdown controller and sccli reset controller commands, please refer to the Sun StorEdge 3000 Family CLI 2.5 User's Guide.

If telnet/serial access mode is used, it is advisable to first shutdown the controller and then reset the array to get the cache flushed to the disks to prevent any data integrity issues.

Attachments

This solution has no attachment