On Sun StorEdge 35xx Arrays running 3.27R firmware, setting the value 'Auto Global Spare' to enabled may result in existing Logical Drives to be lost

Asset ID:	1-72-1012774.1
Update Date:	2013-08-12
Keywords:

Solution Type Problem Resolution Sure

Solution 1012774.1 : On Sun StorEdge 35xx Arrays running 3.27R firmware, setting the value 'Auto Global Spare' to enabled may result in existing Logical Drives to be lost

Applies to:

Sun Storage 3510 FC Array - Version Not Applicable and later
Sun Storage 3511 SATA Array - Version Not Applicable and later
Sun Storage 3310 Array - Version Not Applicable and later
Sun Storage 3320 SCSI Array - Version Not Applicable and later
All Platforms

Symptoms

On a Sun StorEdge 3310/3320/3510/3511 array, logical drives may be lost if the auto-global-spare attribute is enabled. This will occur when a disk, in an existing logical drive, is marked as "NONE BAD" and the array is rebooted. Upon reboot, the disk will become a global spare and the Logical Disk will be lost.

Changes

The only change is the failure of a disk. The sccli command show disks will report something similar to the output for disk Id 1.

sccli> show disks
Ch     Id      Size         Speed LD       Status     IDs        Rev
----------------------------------------------------------------------------
2(3)   0    136.73GB      200MB ld0      ONLINE     <vendor> 0207
                                                S/N 3HY065RD00007308
2(3)   1    0GB           200MB NONE      BAD     <vendor> 0207
                                                      S/N 3HY0CGR100007328

Cause

The cause is due to a bug in the 3.27R firmware on the 35xx arrays.

Solution

Sun Alert <Document 1001052.1 > Logical Drives May be Lost if "auto-global-spare" is Enabled discusses the problem in great detail. The immediate solution is to disable the auto global spare attribute. This can be done in the telet/tip interface by

"view and edit Configuration Parameters -> Drive-side Parameters -> Auto-Assign Global Spare Drive," -> set the value for "Auto-Global Spare" -> "disable".

You can also set the attribute with the sccli interface

sccli> set drive auto-global-spare disabled

sccli> show drive-parameters
    spin-up: disabled
    disk-access-delay: 15s
    scsi-io-timeout: 30s
    queue-depth: 32
    polling-interval: 30s
    enclosure-polling-interval: 30s
    auto-detect-swap-interval: 30s
    smart: detect-only
    auto-global-spare: disabled

The permanent solution is to upgrade firmware. See <Document 1551125.2> Information Center:Sun Storage 3510 FC Array - Upgrade to get started with a firmware migration to 4.x

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