Mounting an NFS File System to ECSs (Windows)

Prerequisites

• You have created a file system and have obtained the mount point of the file system.
• At least one ECS that belongs to the same VPC as the file system exists.
• The IP address of the DNS server for resolving the domain names of the file systems has been configured on the ECS. For details, see Configuring DNS.

Limitations and Constraints

You are advised to use CIFS file systems in Windows OS.

SFS Turbo file systems cannot be mounted to Windows ECSs.

Procedure

1. Go to the ECS console and log in to the ECS running Windows Server 2012.
2. Install the NFS client.
   1. Click Server Manager in the lower left corner. The Server Manager window is displayed, as shown in Figure 1.
      Figure 1 Server Manager
      
   2. Click Add Roles and Features. See Figure 2.
      Figure 2 Wizard for adding roles and features
      
   3. Click Next as prompted. On the Server Roles page, select Server for NFS, as shown in Figure 3.
      Figure 3 Selecting the server for NFS
      
   4. Click Next. In the Features page, select Client for NFS and click Next, as shown in Figure 4. Confirm the settings and then click Install. If you install the NFS client for the first time, after the installation is complete, restart the client and log in to the ECS again as prompted.
      Figure 4 Selecting the NFS client
      

3. Modify the NFS transfer protocol.
   1. Choose Control Panel > System and Security > Administrative Tools > Services for Network File System (NFS), as shown in Figure 5.
      Figure 5 Administrative tools
      
   2. Right-click Client for NFS, choose Properties, change the transport protocol to TCP, and select Use hard mounts, as shown in Figure 6 and Figure 7.
      Figure 6 Services for NFS
      
      Figure 7 Client for NFS properties
      

4. Check that the IP address of the DNS server for resolving the domain names of the file systems has been configured on the ECS before mounting the file system. For details, see Configuring DNS. SFS Turbo file systems do not require domain name resolution.
5. Run the following command in the Command Prompt of the Windows Server 2012 (X is the drive letter of the free disk). Select the ECS that belongs to the same VPC as the file system to mount the file system.

   mount -o nolock mount point X:

   

   • Free drive letter of the disk: A drive letter that is not in use, such as drive letter E or X.

   You can move the cursor to the mount point and click next to the mount point to copy the mount point. If the information shown in Figure 8 is displayed, the mounting is successful.

   Figure 8 Running the command
   

6. After the file system is mounted successfully, you can view the mounted file system on the This PC window, as shown in Figure 9.

   If the mounting fails or times out, rectify the fault by referring to Troubleshooting.

   Figure 9 Successful mounting
   
   

   To distinguish different file systems mounted on an ECS, you can rename file systems by right-clicking a file system and choose Rename.

Troubleshooting

If a file system is mounted to a Linux ECS and a Windows ECS, on the Windows ECS, data cannot be written to the files created by the Linux ECS. To address this problem, modify the registry and change both UID and GID values to 0 for NFS accesses from Windows. This section uses Windows Server 2012 as an example. Do as follows:

1. Choose Start > Run and enter regedit to open the registry.
2. Enter the HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ClientForNFS\CurrentVersion\Default directory. See Figure 10.
   Figure 10 Entering the directory
   

3. Right-click the blank area and choose New > DWORD Value from the shortcut menu. Set AnonymousUid and AnonymousGid to 0. Figure 11 shows a successful operation.
   Figure 11 Adding values
   

4. After modifying the registry, restart the server for the modification to take effect.