Hi all,

bash-3.00$ df -h
Filesystem size used avail capacity Mounted on
/dev/md/dsk/d5 44G 40G 3.1G 93% /u01

but
bash-3.00$ du -sh /u01
9.7G /u01

My question is: Why the fist command tell me 40G used but the second command tell me different result?

My system info:
SunOS INSP-DB1 5.10 Generic_142909-17 sun4u sparc SUNW,SPARC-Enterprise

Thank you!
Dan.

The answer depends a little on what exactly is inside your /u01. See for example this for a quick clarification. The df and du programs calculate the values in a different manner, and therefore the results are hardly ever exactly the same. If there is a big difference, I'd suspect that the target contains either external filesystems mounted under it, links (the handling of which depends on the tool and possibly command line options) or even data that is still in use although it is not linked to by filenames anymore, e.g., it is seemingly deleted, but not closed.

To get more clear results, you should inspect what the mounted filesystem actually contains, and read carefully what df and du calculate.

1 members found this post helpful.

Thanks b0uncer!

It's useful post.
Dan.

Hi b0uncer,

Please help for detail how to solve this problem.

Today i checked and found:

Filesystem size used avail capacity Mounted on
/dev/md/dsk/d5 44G 38G 5.2G 89% /u01

bash-3.00$ du -sh /u01
2.7G /u01

Thank you!
Dan.