FusionStorage file storage service troubleshooting guide

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refer to the link:
http://support.huawei.com/enterprise/en/doc/DOC1000175258?idPath=7919749|7941815|21430817|21500669|21905727

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How to reduce the capacity of a Storage Pool in FusionStorage
1. On FusionStorage, choose Resource Pool > Storage Pools. The Storage Pools page is displayed. 2. Click Capacity Reduction. The Capacity Reduction page is displayed Figure 1 Capacity reduction 3. Select the servers to be removed and click Confirm. After capacity reduction is complete, the Storage Pools page is displayed, which indicates that the FusionStorage storage pool capacity is successfully reduced.

How to expand capacity of a Storage Pool in FusionStorage
1. On FusionStorage, choose Resource Pool > Storage Pools. The Storage Pools page is displayed. 2. Click Capacity Expansion. The Capacity Expansion page is displayed, as shown in Figure 2. Figure 2 Expanding storage pool capacity 3. Perform operations based on the storage resources to be added. ? To add storage servers, go to Step 4. ? To add disks, go to Step 10. 4. Select Add Storage Server. 5. Click Add Server. A dialog box is displayed. 6. In Main Storage Type and Cache Type areas, configure main storage and cache information for the server to be added. The main storage and cache types of the server must be the same as those of the storage pool. In this step, you are required to configure the slot numbers for main storage and cache resources. You can select main storage and cache resources in either of the following methods: ? Batch selection: Enter the slot numbers or quantity. After the server is added, it automatically uses disks in the specified slots as the main storage or caches. ? Manual selection: After adding the server, manually select main storage and cache resources on the server. 7. In the server list, select the servers to be added to the storage pool. 8. Click Yes. The Capacity Expansion page is displayed. 9. Perform Step 13. 10. Select Add Disk. 11. In the Main Storage Type and Cache Type areas, configure main storage and cache resources to be added on the server. You can select main storage and cache resources in either of the following methods: ? Batch selection: Enter the slot numbers or quantity. The server automatically uses disks in the specified slots as the main storage or caches. ? Manual selection: Manually select main storage and cache resources on the server.

How to Transfer a File Using WinSCP in FusionStorage
1. Open the WinSCP folder, and double-click WinSCP.exe. 2. Set the following login parameters: ? Host name: Enter the IP address of the destination device. ? Port number: Set it to the default value 22. ? User name: Enter the username. ? Password: Enter the password. ? Private key file: Retain the default setting, which is empty. ? Protocol: Select the default value SFTP, and click Allow SCP fallback. 3. Click Login. The WinSCP file transfer window is displayed. NOTE: ? If the key file is not selected during the first login, the system displays "Continue connecting and add host key to cache", asking you whether to continue the operation. Click Yes. The WinSCP file transfer window is displayed. ? By default, the C:\Documents and Settings\Administrator\My Documents directory of the local PC is displayed in the left pane, and the /root directory of the transfer destination device is displayed in the right pane. 4. Determine whether to copy a file from the local PC to the destination device. ? If yes, go to Step 5. ? If no, go to Step 9. 5. In the right pane, select a destination directory for storing the received file, such as /home. 6. In the left pane, select the directory in which the file to be transferred is saved, for example, E:\Software\configuration tool, and choose the file to be transferred. 7. On the menu bar, choose Files > Copy. The Copy dialog box is displayed. 8. Confirm the file to be transferred and the destination directory for storing the file, and click Copy. The file transfer from the local PC to the destination device starts. 9. In the left pane, select the directory in which the file to be transferred is saved, for example, E:\Software\configuration tool. 10. In the right pane, select a destination directory for storing the received file, for example, /home, and choose the file to be transferred.

How to Set the Maximum Number of Backup files in FusionStorage
Use PuTTY to log in to the FSM node. Ensure that the FSM floating IP address and username dsware are used to establish the connection. Run the following command and enter the password of user root to switch to user root: su - root Run the following command to disable logout on timeout: TMOUT=0 Run the following command to switch to the directory containing the backup configuration file: cd /opt/dsware/manager/webapps/dsware/WEB-INF Run the following command to open the backup configuration file using the visual interface (vi) editor: vi BackupConf.properties Press i to enter editing mode. Change the value of the following parameter: maxBackupCount: specifies the maximum number of FusionStorage backup files that can be stored. Press Esc, enter :wq, and press Enter. The system saves the configuration and exits the vi editor. Run the following command to display the content in the backup configuration file: cat BackupConf.properties Check whether the maxBackupCount parameter is set correctly. If yes, no further action is required. If no, go to Step 11. Perform Step 5 to Step 9 to change the maximum number of backup files if the original setting is inappropriate. NOTE: If the value setting fails again, contact technical support.

Recommended file block size for NAS services of the OceanStor V3 storage
Recommended file block sizes vary with application scenarios: 1. In media and large file archive/backup scenarios where large I/Os are involved, the recommended file block size is 64 KB. 2. In small file archive/backup, VM, or database scenarios where small I/Os are involved, the recommended file block size is 4 KB. Recommended file block sizes are based on the size of the majority of files: 1. When sizes of the majority of files are smaller than 100 KB, the recommended file block size is 4 KB. 2. When sizes of the majority of files range from 100 KB to 1 MB, the recommended file block size is 8 KB. 3. When sizes of the majority of files range from 1 MB to 100 MB, the recommended file block size is 16 KB. 4. When sizes of the majority of files range from 100 MB to 1 GB, the recommended file block size is 32 KB. 5. When sizes of the majority of files are larger than 1 GB, the recommended file block size is 64 KB.

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