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Huawei V2 and V3 Server RAID Controller Card User Guide 36

This document describes the appearances and features of the redundant array of independent disks (RAID) controller cards, how to configure properties for the RAID controller cards, and how to install drivers. The RAID controller cards include the LSI SAS2208, LSI SAS2308, LSI SAS3008, LSI SAS3108, LSI SoftRAID, PM8060, and PM8068.
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Failed to Clear Preserved Cache

Failed to Clear Preserved Cache

Symptom

A hard drive in a RAID 0 array was faulty. The customer replaced the drive, and attempted to clear the preserved cache for the LSI SAS2208 controller card, as shown in Figure 4-201. After the operation was complete, the preserved cache still existed on the screen.

Figure 4-201 Clearing preserved cache

Cause Analysis

This is an inherent problem of LSI SAS2208. The preserved cache occasionally fails to be cleared on the CU screen, resulting in RAID array configuration failures.

Solution

Solution 1: Use StroCLI to clear preserved cache. (The following uses Linux as an example and assumes that the user can log in to the OS.)

  1. On the RAID configuration screen, set Boot Error Handling to Ignore errors. See Figure 4-202.
    Figure 4-202 Setting Boot Error Handling

  2. Download and decompress the StroCLI package.
  3. Upload the StroCLI package (for example storcli-1.17.08-1.noarch.rpm for Linux OSs) to /tmp of the server OS.
  4. Run rpm -ivh storcli-1.17.08-1.noarch.rpm to install StroCLI.

  5. After the installation is complete, run find ./ -name *storcli* to query the installation directory.

  6. Go to the directory and run the following command to clear preserved cache:
    [linux~host]# cd /opt/MegaRAID/storcli
    [linux~host]# ./storcli64 /c0/vall delete preservedcache
  7. Restart the server.
  8. Go to the RAID configuration screen and configure a new RAID array.
  9. Set Boot Error Handling to Stop on Errors.

Solution 2: Use the toolkit to clear preserved cache. (Use this solution when the OS login fails.)

  1. Log in to the Huawei Enterprise support website.
  2. Choose TECHNICAL SUPPORT > Product Support > Management Software > FusionServer Tools, click the Software Download tab, and download the latest toolkit.
  3. Mount the toolkit ISO file to the virtual drive of the server. See Figure 4-203.
    Figure 4-203 Mounting the toolkit

  4. Restart the server from the virtual drive and load the toolkit when prompted.
  5. After the loading is complete, press C to go to the CLI, and enter the user name and password. See Figure 4-204.
    Figure 4-204 Logging in to the toolkit CLI

  6. Run the following command to clear preserved cache:
    linux:/ #cd /opt/MegaRAID/storcli
    linux:/opt/MegaRAID/storcli #./storcli64 /c0/vall delete preservedcache
  7. Restart the server.
  8. Go to the RAID configuration screen and configure a new RAID array.
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Updated: 2019-11-01

Document ID: EDOC1000004186

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