Mounting a Subdirectory of an NFS File System to ECSs (Linux)

Prerequisites

You have mounted the file system to a Linux ECS by referring to Mounting an NFS File System to ECSs (Linux).

Procedure

1. Create a subdirectory in the local path.

   mkdir Local path/Subdirectory

   

   Variable Local path is a local directory on the ECS used to mount the file system, for example, /local_path. Specify the local path used to mount the root directory.

2. Mount the subdirectory to the ECSs that are in the same VPC as the file system. You can mount the file system to Linux ECSs using NFSv3 only.

   mount -t nfs -o vers=3,timeo=600,noresvport,nolock,tcp Domain name or IP address of the file system:/Subdirectory Local path

   

   • Domain name or IP address of the file system: You can obtain it from the file system list or details page on the console.
     • SFS Turbo: xx.xx.xx.xx:/subdirectory
   • Subdirectory is the subdirectory created in the previous step.
   • Local path is an ECS local directory where the file system is mounted, for example, /local_path. Specify the local path used to mount the root directory.

3. View the mounted file system.

   mount -l

   If the command output contains the following information, the file system has been mounted:

   Shared path on /local_path type nfs (rw,vers=3,timeo=600,nolock,addr=)

4. Check that you can access the subdirectory on the ECSs to read or write data.

Troubleshooting

If a subdirectory is not created before mounting, the mount will fail.

Figure 1 Mounting without a subdirectory created

In the preceding figure, the root directory does not have the subdir subdirectory created so that the mount fails. In this case, error message "Permission denied" is reported.

To troubleshoot this issue, mount the root directory, create a subdirectory, and then mount the subdirectory.

Figure 2 Mounting a subdirectory