topic Re: diff in df -h and du -sh in Operating System - Linux

diff in df -h and du -sh

iinfi1 — Tue, 14 Sep 2010 09:26:40 GMT

oracle:~ # df -h | grep u10
/dev/sdi1 200G 118G 83G 59% /u10

oracle:~ # du -sh /u10/
111G /u10/

why is there a difference in df -h and du-sh?
used space is 118G with df and 111G in du -sh

Re: diff in df -h and du -sh

Bijeesh — Tue, 14 Sep 2010 11:14:47 GMT

du..>Disk Usage - report the amount of disk space used by the specified files and for each subdirectory
df ..> report file system disk space usage

orphan files on the file system were responsible for the significant difference between the df and du commands.
ie,one files may be opened by one process and the file get deleted before the precess end.At this state du can't count the deleted file ,but df will see that it is used by the process.

Find the below thread.
http://forums13.itrc.hp.com/service/forums/questionanswer.do?admit=109447627+1284464040318+28353475&threadId=1134300

Bijeesh

Re: diff in df -h and du -sh

Kapil Jha — Wed, 15 Sep 2010 03:55:23 GMT

df - report file system disk space usage
du -- display disk usage statistics

in file system it also displayes size of whatever files has been open, that is why its always more.

du would only tell you the exact size of files in the server.

BR,
Kapil+

Re: diff in df -h and du -sh

iinfi1 — Wed, 15 Sep 2010 11:50:20 GMT

thank you all for the clarification