mount.nfs: Stale file handle和umount.nfs4:device is busy的解决方法_umount.nfs4: /mnt/nfsdata: device is busy

在NFS客户端挂载目录中会出现这个问题。

root@ai-server:/gui# mount -t nfs 192.168.140.2:/data/lai/3d_retrieval_system_pytorch/ /data/lai/3d_retrieval_system_pytorch/
mount.nfs: Stale file handle

 root@ai-server:/gui# umount /data/lai/3d_retrieval_system_pytorch
umount.nfs4: /data/lai/3d_retrieval_system_pytorch: device is busy

这是由于在NFS的clients端直接删掉挂载目录导致的，导致后期想重新mount和umount都是会报如上错误。

解决方法：umount 添加-lf参数，再次mount就成功了

root@ai-server:/gui# umount -lf /data/lai/3d_retrieval_system_pytorch
root@ai-server:/gui# mount -t nfs 192.168.140.2:/data/lai/3d_retrieval_system_pytorch/ /data/lai/3d_retrieval_system_pytorch/

运行df -h 命令会看到如下信息，表明挂载成功

df -h