为什么 leapp 升级在检测 NFS 时导致升级失败？

Issue

• leapp preupgrade 命令失败并显示错误 Title: Use of NFS detected. Upgrade can't proceed。

  Risk Factor: high (inhibitor)
  Title: Use of NFS detected. Upgrade can't proceed
  Summary: NFS is currently not supported by the inplace upgrade.
  We have found NFS usage at the following locations:
  - Currently mounted NFS shares
  
  Remediation: [hint] Disable NFS temporarily for the upgrade if possible.
  Key: xxxxxxxxx