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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 a System Disk Module

Replacing a System Disk Module

System disk modules are used to boot operating systems.

Impact on the System

If RAID 1 has been configured for the two system disk modules, the system will not be affected. Otherwise, the system will break down.

Prerequisites

  • A spare disk module is ready. The type of the spare disk module is the same as that of the faulty disk module. The capacity of the spare disk module is greater than or equal to that of the faulty disk module.
  • The faulty disk module has been located.
NOTE:

For details about the slot numbers of system disk modules, see Slot Numbers.

Precautions

  • Do not remove the two system disk modules at the same time. Otherwise, the device cannot work.
  • After a system disk module is replaced, data will be reconstructed on the new system disk. Do not remove and insert the other system disk module during reconstruction. Otherwise, the device cannot work.
  • To prevent damaging disk modules or connectors, remove or install disk modules with even force.
  • When removing a disk module, first remove it from its connector. Wait at least 30 seconds and then remove the disk module completely from the chassis.
  • To prevent disk module damage, wait at least one minute between removal and insertion actions.
  • To avoid data loss, replace only the disk module whose fault indicator is yellow on.
  • To avoid system failures, do not reuse disk modules.

Tools and Materials

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

Procedure

  1. 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 3-1.

      The ejector lever automatically ejects.

      Figure 3-1 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 3-1.
    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 3-1.

  2. Place the removed disk module in an ESD bag.
  3. Take the spare disk module out of its ESD bag.
  4. 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 3-2.
      Figure 3-2 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 3-2.

  5. Check whether the disk module is successfully installed.

    Wait 3 minutes and then check the activity and fault indicators on the disk to determine whether the disk module is successfully installed.
    • If the activity indicator is steady on or blinking green and the fault indicator is off or blinking yellow, the installation is successful.
    • If the fault indicator is steady yellow, the installation fails. In this case, perform the following operations:
      • Check whether the disk module has been firmly inserted. If not, wait 1 minute and then reinsert it.
      • If the fault indicator is still steady yellow after you have reinserted the disk module, the spare disk module may be faulty. In this case, replace it with another one.
      • If the fault indicator is still steady yellow after the replacement, the link of the disk slot may be faulty. In this case, contact technical support engineers.

  6. Check the RAID status of the system disk.

    Log in to the iBMC WebUI of the storage node, choose Information > System Info > Storage > Views, and check whether the system is configured with a RAID controller card.
    • If the system is configured with a RAID controller card (hardware RAID), select the replaced system disk. Rebuild Status in Physical Drive Information shows the rebuilding progress of the system disk. Proceed to 7.
    • If the system is not configured with a RAID controller card (software RAID), create RAID partitions on the new system disk.
      1. Run the following commands to check the drive letters of the system disks:

        ls /sys/devices/pci0000\:74/0000\:74\:04.0/host*/phy-*\:4/port*/end_device-*/target*/*/block/

        ls /sys/devices/pci0000\:74/0000\:74\:04.0/host*/phy-*\:5/port*/end_device-*/target*/*/block/

      2. Run the following command to find the drive letter of the new disk. Disks with partitions are old ones, such as sdj in the following figure. Disks without partitions are new ones, such as sdk in the following figure.

      3. Partition the new disk.
        1. Check the partitions of the old disk. It is recommended that you use the sector as the unit. The following figure shows the partitions of the old disk.

        2. Run the following commands to partition the new disk. Example:

          parted /dev/sdk mkpart logical "2048s" "41945087s";echo $?

          parted /dev/sdk mkpart logical "41945088s" "42782719s";echo $?

          parted /dev/sdk mkpart logical fat16 "42782720s" "43411455s";echo $?

          parted /dev/sdk mkpart logical "43411456s" "1172121599s";echo $?

          If the following information is displayed after you run the following command, the new disk is not registered. In this case, run the registration command.

          parted /dev/sdk mkpart logical "2048s" "41945087s";echo $?

          Registration command: parted -s /dev/sdk mklabel gpt

        3. After partitioning, check the disk status.

      4. Run the following commands to add the disk to the RAID group. The size of the new disk partition must be the same as that of the old disk partition. Example:

        mdadm --manage /dev/md2 --add /dev/sdk1

        mdadm --manage /dev/md0 --add /dev/sdk2

        mdadm --manage /dev/md1 --add /dev/sdk3

        mdadm --manage /dev/md3 --add /dev/sdk4

      5. Run the following command to check whether the RAID data synchronization is complete:

        mdadm --detail /dev/md3

        • If the value of Rebuild Status is a percentage, the RAID data synchronization is not complete.

        • If the value of State is clean, the RAID data synchronization is complete.

  7. 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 system disk module to facilitate subsequent operations.

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Updated: 2019-09-19

Document ID: EDOC1100081420

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