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    Server Migration Center:What do I do if a "Use of NFS detected. Upgrade can't proceed" error occurs?

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    Server Migration Center:What do I do if a "Use of NFS detected. Upgrade can't proceed" error occurs?

    Last Updated:Jul 12, 2023

    Problem description

    A "Use of NFS detected. Upgrade can't proceed" error occurs when an operating system is being migrated.

    Cause

    Network File System (NFS) allows clients to access files on a server in the same way that they access local files. This capability of NFS 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 file system on an Elastic Compute Service (ECS) instance or attempt to access remote files by using NFS, unexpected errors may occur.

    Solution

    1. Unmount the NFS file system and disable the NFS service until the migration of the operating system is complete. For more information, see Unmount a file system from a Linux ECS instance.

    2. Restart the operating system migration job.

    3. After the operating system is migrated, mount the NFS file system again. For more information, see Mount an NFS file system on a Linux ECS instance.