OS Faults

Incompatible OS

Use Computing Product Compatibility Checker to check whether the OS is compatible with the server.

Incorrect installation method

Use Computing Product Compatibility Checker to check whether the OS is compatible with the server and view the corresponding OS installation guide. To obtain the OS installation guide, perform the following steps:

1. Log in to the Support > Kunpeng Computing or Support > Ascend Computing.
2. Choose a server model to access the product page.
3. On the Documentation tab page, choose Installation & Upgrade > Software Deployment Guide.
4. View the required OS installation guide.

Installation process issue

1. Check whether the OS installation procedure is correct. For details, see the OS installation guide of the corresponding product.
2. Check whether the OS installation requires a physical DVD drive or other media.
3. Check whether the OS installation requires a special installation DVD, for example, one integrated with drivers.
4. Check whether the OS installation DVD is an original from the manufacturer or whether it has been modified by a third party.
5. Disconnect any external storage devices (including the USB storage medium).
6. Ensure that the default BIOS settings are used.
7. Ask the OS vendor for installation support.

Drive identification issue

1. Check whether the target drive is compatible by using Computing Product Compatibility Checker.
2. Check whether the cable connection between the RAID controller card and the drive backplane is correct. For details, see the internal cabling section in the maintenance and service guide of the corresponding server.
3. Ensure that the target drive is identified by the RAID controller, and check the BIOS to see whether the target storage devices, including SATADOMs, SD cards, and built-in USB flash drives, are identified.
4. Check the model of the RAID controller card and determine whether to configure a RAID array. For details, see the user guide of the RAID controller card.
5. Check the RAID array properties to ensure that the boot drive and the target drive are the same or in the same RAID array.
6. Check whether the drive is a 4K drive.
7. Check whether the loaded RAID controller card driver is correct.
8. Format the drive or reconfigure the RAID array.

The server is suspended or restarted.

Check whether the Kdump information contains crashed process names or board vendor names. For example, FC_XX indicates an FC device breakdown.

The built-in OS drivers are incompatible.

Check whether it is a PCIe card compatibility issue:

• Check the power supply.
• Check whether the PCIe protocol is supported by the PCIe card.
• Check the drivers.

The PCIe card is incompatible.

Use iBMC to locate the fault, for example, the DIMM, drive, or mainboard component for which an alarm is reported.

Circuit hardware is faulty.

If the OS logs contain read-only file system records, use Smart Provisioning to rate the drive and decide whether to replace the drive based on the result.

A drive fault occurred.

Check whether there is a Machine Check Exception issue. Locate such a fault by checking /var/log/mce.log and error codes of serial port Kdump information.

• The hardware is faulty.
• The software or hardware interface setting is incorrect.

Collect the following information:

• For new servers, confirm the proportion of abnormal servers and check whether normal and abnormal servers have the same configurations.
• For existing servers, confirm the number of abnormal servers and check whether the issues occur under specific circumstances.
• Check iBMC for hardware alarms.

After collecting the preceding information, determine whether it is a single server or hardware issue. Run Smart Provisioning for fault locating.

Locate the fault based on the report.

Breakdown occurs under specific circumstances after software upgrade of customer service software, database, middleware, kernel, BIOS, iBMC, and storage devices.

• The new software version has bugs.
• Original interfaces are disabled for security purposes causing issues.

Check whether the Kdump information of the breakdown screenshot periodically displays update_cpu_power, divide_error, or timer_xx.

The OS has bugs or kernel defects.

Check whether the Kdump information of the breakdown screenshot non-periodically displays gethostbyname.