How can I get subdir's available and total space with df ?

itfanr 发布于 2016/05/28 11:57
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For example , there are 10 subdirectories in my root file system,each given 10T.
Then I mountted one to local file system:

mount -t nfs  host11:/dir1  /mnt/nfs -o vers=3 
But, I got 100T total space using df.

My question is if the NFSv3 protocol can only support root filehandle during the nfs3_fsstat?
If so,what about NFSv4?

How can I make it without modifying the nfs-utils code in kernel?

I also asked here :