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FusionStorage 8.0.0 Block Storage Parts Replacement 04

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Replacing an SSD Used as the Cache

Replacing an SSD Used as the Cache

NOTE:

This chapter applies to TaiShan 2280 V2 12-slot nodes, TaiShan 2280 V2 25-slot nodes, TaiShan 5280 V2 36-slot nodes, 2288H V5 12-slot nodes, and 5288 V5 36-slot nodes.

SSDs can be used as the cache of the storage system. NVMe SSDs support orderly hot plug, and SAS SSDs support surprise hot plug.

Impact on the System

When an SSD is being replaced, system performance is compromised. Therefore, replace an SSD during off-peak hours.

Prerequisites

  • A spare SSD is ready.
  • The faulty SSD has been located.
  • The storage pool to which the faulty SSD belongs is in the normal state, and no data reconstruction task is running.
NOTE:

For details about the positions of SSDs, see Slot Numbers.

Precautions

  • Wait until the removal of an SSD is complete before you remove another one.
  • Wait until the insertion of an SSD is complete before you install another one.
  • NVMe SSDs support only orderly hot swap. Before removing an NVMe SSD, stop all services accessing the NVMe SSD.
  • When replacing an SSD, wait for 30 seconds after it is removed before you install a new one.

Tools and Materials

  • ESD gloves
  • ESD wrist straps
  • ESD bags
  • Labels

Procedure

  1. Obtain the ESN of the faulty SSD.

    1. Log in to DeviceManager, and choose Services > Block Service > Storage Pool.
    2. Click in the row where the desired storage pool resides, and select Disk Topology from the shortcut menu.
    3. Move the cursor to the faulty SSD. SN that is displayed is the ESN of the faulty SSD.

  2. Log in to the primary management node as user dsware, and run the sh /opt/dsware/client/bin/dswareTool.sh --op setServerStorageMode -ip Management IP address of the faulty node -mode 1 command to switch to the maintenance mode. To run this command, enter the name and password of CLI super administrator account admin as prompted.
  3. Optional: If the faulty SSD is an NVMe SSD, log in to the primary management node as user dsware and run the following command to logically power off the faulty NVMe SSD. To run this command, enter the name and password of CLI super administrator account admin as prompted:

    sh /opt/dsware/client/bin/dswareTool.sh --op poweroffNvmeDisk -ip Management IP address of the faulty node -slotNo Slot number of the faulty SSD -esn ESN of the faulty SSD

  4. Remove the disk module.

    Correctly record the slots where disk modules reside. Install disk modules into the same slots before and after the replacement. Otherwise, services may be affected.

    1. Press the button that secures the disk module ejector lever, as shown in step 1 in Figure 9-1.

      The ejector lever automatically ejects.

      Figure 9-1 Removing a disk module
    2. Hold the ejector lever, and pull out the disk module for approximately 3 cm, as shown in step 2 in Figure 9-1.
    3. Wait at least 30 seconds until the disk stops spinning, and slowly pull out the disk module, as shown in step 3 in Figure 9-1.

  5. Place the removed disk module in an ESD bag.
  6. Take the spare disk module out of its ESD bag.
  7. Install the disk module.

    Install disk modules into the same slots before and after the replacement. Otherwise, services may be affected.

    1. Raise the ejector lever and push the disk module in along the guide rails until it does not move, as shown in step 1 in Figure 9-2.
      Figure 9-2 Installing a disk module
    2. Ensure that the ejector lever is fastened to the beam, and lower the ejector lever to completely insert the disk module into the slot, as shown in step 2 in Figure 9-2.

  8. Wait for 5 minutes after the replacement, and then obtain the ESN of the spare SSD.

    1. Log in to DeviceManager, and choose Cluster > Hardware.
    2. Locate the faulty node based on the node IP address, and click to display the node details.
    3. Move the cursor to the corresponding slot. SN that is displayed is the ESN of the spare SSD.

  9. Optional: If the faulty SSD has not been removed from its storage pool, run the following command to add the spare SSD to the storage pool. To run this command, enter the name and password of CLI super administrator account admin as prompted:

    sh /opt/dsware/client/bin/dswareTool.sh --op forceReplaceSSD -id ID of the storage pool to which the faulty SSD belongs -oldEsn ESN of the faulty SSD -newEsn ESN of the spare SSD -nodeMgrIp Management IP address of the faulty node -type cache -ignoreMediaFault true

  10. Optional: If the faulty SSD has been removed from its storage pool and the spare SSD is not automatically added to the storage pool, run the following command to add the spare SSD to the storage pool. To run this command, enter the name and password of CLI super administrator account admin as prompted:

    sh /opt/dsware/client/bin/dswareTool.sh --op updateSSDCacheESN -poolId ID of the storage pool to which the faulty SSD belongs -oldEsn ESN of the faulty SSD -newEsn ESN of the spare SSD -nodeMgrIp Management IP address of the faulty node

  11. Log in to the primary management node as user dsware, and run the sh /opt/dsware/client/bin/dswareTool.sh --op setServerStorageMode -ip Management IP address of the faulty node -mode 0 command to switch to the normal mode. To run this command, enter the name and password of CLI super administrator account admin as prompted.
  12. Check the firmware version.

    1. Use the KVM to log in to the storage node as user root.
    2. Run the following command to check the firmware version (nvme0 is used as an example):

      hioadm updatefw -d nvme0

      [root@node0101 ~]# hioadm updatefw -d nvme0
      slot  version   activation
      1     3.10       
      2     3.10      current
      3     3.10 

      The version on the left of current is the current firmware version. If the current firmware version is not 3.10 or later, contact Huawei technical support.

  13. Check the system status.

    On SmartKit, choose Home > Storage > Routine Maintenance > More > Inspection and check the system status.
    • If all inspection items pass the inspection, the inspection is successful.
    • If some inspection items fail, the inspection fails. Rectify the faults by taking recommended actions in the inspection reports. Perform inspection again after fault rectification. If the inspection still fails, contact Huawei technical support.

    For details, see the FusionStorage Block Storage Administrator Guide.

Follow-up Procedure

Label the replaced SSD to facilitate subsequent operations.

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Updated: 2019-09-19

Document ID: EDOC1100081420

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