StorageTek Virtual Storage Manager System 7 (VSM7)
 

PLA-Support>Sun Systems>TAPE>Virtual Tape>SN-TP: VSM7
 

In this Document

Symptoms

Changes

Cause

Solution

References

Created from <SR 3-16211475500>

Applies to:

Symptoms

Fault reported is: FSC000_NLKP_SEGMENTATION_FAULT

This can trigger a single or dual node reboot.

The following may be seen in the majorevents.log file of the VSM7.

Node 1 major events log.
2017/11/20 01:02:51.645233 3484:E:VSM:0001:vsmnlkip_main.c:389: SNO:FSC0007F082_NLKP_SEGMENTATION_FAULT Process:vsmnlkip.n1
2017/11/20 01:03:15.752992 2404:E:VSM:0006:scvsm_utils.c:382: ClusterFail:FSC00100009_CLUSTER_FAILED_NLKIP1
2017/11/20 01:03:15.807102 2404:E:VSM:0006:scvsm_utils.c:382: ClusterFail:FSC00100002_CLUSTER_DETECTED_FAILURE_LOCAL_NODE

Node 2 major events log.
2017/11/19 08:02:08.337148 3677:E:VSM:0001:vsmnlkip_main.c:389: SNO:FSC0007F082_NLKP_SEGMENTATION_FAULT Process:vsmnlkip.n2
2017/11/19 08:02:27.307055 2436:E:VSM:0006:scvsm_utils.c:382: ClusterFail:FSC0010000A_CLUSTER_FAILED_NLKIP2
2017/11/19 08:02:27.367910 2436:E:VSM:0006:scvsm_utils.c:382: ClusterFail:FSC00100002_CLUSTER_DETECTED_FAILURE_LOCAL_NODE

Changes

 Recent code upgrade and/or recent attachment of VLE for migrations.

Cause

The VSM7 hardware introduced an ADI hardware check.  The problem can happen when performing a migrate to a VLE where a page has a block that spans from the previous page and has a full 60 blocks in the page.  The code is running off the end of the block array after performing a VTPF function using the TDX hardware.  The VSM7 ADI hardware detects the invalid access.

The exposure to this problem exists in VSM7 code levels 7.1.1.01.000 through and including 7.1.1.05.000. 

The VSM6 is exempt from this problem as it does not have this hardware check and handles this event without faulting.
 

Solution

Install 7.1.1.06.000 code. 

Cautions:

1. Do not attempt to back down to a prior level of code to avoid this problem.
2. Although 7.1.1.05.000a addresses this problem it has been withdrawn for other reasons, do not install it.

References

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