Server Migration Center:What do I do if the "Use of NFS/CIFS detected. Upgrade can't proceed" error message appears?

Problem description

The "Use of NFS/CIFS detected. Upgrade can't proceed" error message is reported when an operating system is being migrated by using Server Migration Center (SMC).

Cause

Network File System (NFS) and Common Internet File System (CIFS) allow clients to access files on a server in the same way that they access local files. This capability depends on the proper running of network protocol stacks and network interface controllers (NICs). When an operating system is being migrated, the network connection is not guaranteed due to the installation of drivers and software for Anolis OS or Alibaba Cloud Linux. In this case, if you mount an NFS or a CIFS file system on an Elastic Compute Service (ECS) instance or attempt to access remote files by using NFS or CIFS, unexpected errors may occur.

Solution

1. Unmount the NFS or CIFS file system and disable the file system until the operating system migration is complete. For more information, see the following topics:

   • NFS: Unmount a file system in the NAS console

   • CIFS: Unmount a file system by running a command

2. Restart the migration job to migrate the operating system.

3. After the operating system is migrated, mount the NFS or CIFS file system again. For more information, see the following topics:

   • NFS: Mount an NFS file system

   • CIFS: Mount an SMB file system

4. After the error is resolved, run the SMC client and retry the migration job. For more information, see Run the SMC client.