obsolete df (file system disk space usage) values and NFS

[Vincent Lefevre <vincent@vinc17.net>]

Hi,

Yesterday, I removed a 700 MB directory over NFS with rm -rf, and
I invoke "df" several times before and after the removal, but the
"Used" value only decreased by 3 MB, including more than one hour
after the operation.

Before:

Filesystem           1K-blocks      Used Available Use% Mounted on
                      26214400   8291328  17923072  32% /home/vlefevre

After:

Filesystem           1K-blocks      Used Available Use% Mounted on
                      26214400   8288256  17926144  32% /home/vlefevre

Today the value is now correct:

Filesystem           1K-blocks      Used Available Use% Mounted on
                      26214400   7589888  18624512  29% /home/vlefevre

Why did it take so long?

-- 
Vincent Lefèvre <vincent@vinc17.net> - Web: <http://www.vinc17.net/>
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Work: CR INRIA - computer arithmetic / AriC project (LIP, ENS-Lyon)