No relevant resource is found in the selected language.

This site uses cookies. By continuing to browse the site you are agreeing to our use of cookies. Read our privacy policy>Search

Reminder

To have a better experience, please upgrade your IE browser.

upgrade

Administrator Guide 15

OceanStor 5300 V3, 5500 V3, 5600 V3, 5800 V3, and 6800 V3 Storage System V300R003

Routine maintenance activities are the most common activities for the storage device, including powering on or off the storage device, managing users, modifying basic parameters of the storage device, and managing hardware components. This document applies to the system administrators who are responsible for carrying out routine maintenance activities, monitoring the storage device, and rectifying common device faults.
Rate and give feedback :
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).
Preparing for Space Reclamation (Linux)

Preparing for Space Reclamation (Linux)

Before reclaiming space, you must finish preparatory work such as backing up disk information and checking the host and storage device's running status to ensure that the space reclamation can be successfully implemented.

Procedure

  1. Confirm the range of to-be-reclaimed storage space and back up disk information.
    1. Confirm whether it is full reclamation or partial reclamation.
    2. Run vgdisplay -v, pvdisplay, and fdisk -l to view VG, PV, and disk information. Back up the information.
    3. Make sure that the to-be-reclaimed disk will not be used anymore.

      1. Run upadmin show vlun to view the mappings between the to-be-reclaimed LUN and the disk on the host.
      2. Run vgdisplay -v and make sure that the to-be-reclaimed disk is not in a VG.

  2. Check the host running status.
    1. Run more /var/log/messages to check whether there are any errors related to the storage system on the host. If there are, remove the errors and proceed to the next step.
    2. Check the disk path status.

      1. Run upadmin show vlun to query the status of all vLUNs. Confirm that the status of all vLUNs is Normal.
      2. Run upadmin show path and make sure that the system path status is Normal. If a path whose status is Degrade exists, run upadmin set phypathnormal. Specify the path whose status is Degrade using the path_id parameter.

    3. Run upadmin set workingmode=0 to change the working mode of UltraPath.
    4. Run upadmin set loadbalancemode=round-robin to change the I/O pathing mode of UltraPath.
  3. Check the storage system status. If there are alarms, clear them and then proceed to the next step.
  4. On the storage system, export the storage system configuration data.
    1. Log in to the CLI of the storage system using PuTTY.

      NOTE:
      The default username and password are admin and Admin@storage.

    2. Run export running_data to export and save the current configuration file.
  5. Check the status of the connection between the host HBA and the storage device.
    1. As planned, check whether the two devices (the HBA and the storage device) are connected and whether the zoning on the switch is correct by using the WWN of the host HBA and the front-end port of the storage device.
    2. Run show port general to check whether the planned front-end network is connected. Specify the front-end port using the port_id parameter.
      If the planned front-end network is connected, its Type is Host Port and its Running status is Link up.
    3. Run show initiator initiator_type=FC isfree=yes to check whether the storage device can query the initiator on the host and filter out initiators that are not assigned to the host.

      In the command output, the planned HBA should exist and its running status should be Online.

       
      admin:/>show initiator initiator_type=FC isfree=yes
           WWN                 Running Status        Free       Alias      Host ID         Multipath Type
           -----------------   -------------------   -----      -------    ----------      ------------------
           100000000000*        Online                Yes        --         --             Default

Translation
Download
Updated: 2019-04-17

Document ID: EDOC1000084191

Views: 85540

Downloads: 2297

Average rating:
This Document Applies to these Products
Related Documents
Related Version
Share
Previous Next