IBM Support

IMM2 reports backup GPT corruption detected after server restart - IBM Systems and Lenovo x86 Servers

Troubleshooting


Problem

System x servers configured with multiple disk volumes using GUID Partition Table (GPT) may see a following error logged in the IBM Integrated Management Module II (IMM2) controller interface: Warning: Sensor GPT Status has transitioned from normal to non-critical state. When the 'more' button is selected, the following message will appear: Additional Information for Event: Backup GPT corruption detected. DiskGUID The following message will also appear during bootup. DiskGUID : Backup GPT corruption detected Press 'R' to repair or 'N' to skip

Resolving The Problem

Source

RETAIN tip: H212119

Symptom

System x servers configured with multiple disk volumes using GUID Partition Table (GPT) may see a following error logged in the IBM Integrated Management Module II (IMM2) controller interface:

Warning: Sensor GPT Status has transitioned from normal to non-critical state.

When the 'more' button is selected, the following message will appear:

Additional Information for Event:

Backup GPT corruption detected. DiskGUID

The following message will also appear during bootup.

  DiskGUID :
Backup GPT corruption detected
Press 'R' to repair or 'N' to skip

Affected configurations

The system can be any of the following IBM servers:

  • BladeCenter HS23, type 1929, any model
  • BladeCenter HS23, type 7875, any model
  • Lenovo System x3550 M5, type 5463, any model
  • Lenovo System x3650 M5, type 5462, any model
  • System x3550 M4, type 5459, any model
  • System x3550 M4, type 7914, any model
  • System x3650 M4, type 7915, any model

The system is configured with one or more of the following IBM options:

  • 200 GB 2.5-inch SAS Solid-State drive (feature number 5500, option part number 81Y9903), any replacement part number
  • 400 GB 2.5-inch SAS Solid-State drive (feature number 5505, option part number 81Y9907), any replacement part number
  • IBM 6 Gb SAS HBA, option part number 46M0907, any replacement part number
  • ServeRAID N2125 SAS/SATA HBA for IBM System x, option part number 46C9010, any replacement part number
  • LSI2004 RAID Integrated Controller, any embedded
  • N2215 SAS/SATA Host Bus Adapter (HBA) for IBM System x, option part number 47C8675, any model
  • ServeRAID H1110 SAS/SATA Controller, option part number 81Y4492, any replacement part number
  • ServeRAID H1135 Controller for IBM Flex System and BladeCenter, option part number 90Y4750, any replacement part number
  • ServeRAID N2115 SAS/SATA HBA for IBM System x, option part number 46C8988, any replacement part number
  • ServeRAID N2125 SAS/SATA HBA for IBM System x, option part number 46C9010, any replacement part number
  • ServeRAID N2126 SAS/SATA HBA for IBM System x, option part number 47C8683, any replacement part number
  • ServeRAID N2225 SAS/SATA HBA for IBM System x, option part number 00AE912, any option   
  • ServeRAID N2226 SAS/SATA HBA for IBM System x, option part number 00AE916

This tip is not software specific.

The system has the symptom described above.

Solution

This issue is fixed in IBM 6 Gb SAS HBA controller firmware version 1.18.01.

This issue will be fixed in an upcoming version of the N2200 Series SAS/SATA HBA firmware. This firmware will be available fourth quarter 2015.

The new firmware is now available and can be downloaded from the following web site:

https://www.ibm.com/support/fixcentral/

Workaround

None. Users can simply ignore the messages in the IMM logs.

Additional Information

This is not a data loss or data integrity issue.

The SAS firmware is passing a LastBlock command incorrectly to the Integrated Management Module II (IMM2). Instead of passing the correct Logical Block Address (LBA), it is instead always passing the LastBlock LBA for the first Logical Unit Number (LUN).

Document Location

Worldwide

Operating System

BladeCenter:Operating system independent / None

System x:Operating system independent / None

System x Hardware Options:Operating system independent / None

Lenovo x86 servers:Operating system independent / None

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Document Information

Modified date:
30 January 2019

UID

ibm1MIGR-5094858

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