BDF and DU commands not showing the same Diskspace !!!

[Carsten Abildgaard]

Hello all HP-UX users

This is my first thread here :)

I have been running HP-UX for quite some time now.
I just got a HP-UX 11.31 rx2660(IA64) server in production.

Today the server starts to complain that /home/ is running low on disk space.

I did a quick lvextend to get the system running but !!!

When I type BDF
root@host:/home# bdf
/dev/vg00/lvol5 15360000 10313264 5007664 67% /home

And compare it with a du -sk in the folder
root@host:/home# du -sk
2049000 .

There is a missmatch by 8GB. Where did my diskspace go ?

The server was restarted 3 days ago so it should not be any service that keeping the lost space.

Any other got the same issue as me ?
Please let me know if you need any other information.


Best regards
Jan Madsen

[Michal Kapalka (mikap)]

Hi Jan,

check this link :

subject : du and bdf doesn't match

http://forums11.itrc.hp.com/service/forums/questionanswer.do?admit=109447626+1245227033267+28353475&threadId=664105

mikap

[Hakki Aydin Ucar]

You can check this link out:

http://forums13.itrc.hp.com/service/forums/questionanswer.do?admit=109447627+1245246686129+28353475&threadId=1123715

[Pete Randall]

First things first! You say you did an lvextend. Did you also do an extendfs to grow the file system?


Pete

[Michael Steele_2]

Hi

I've noticed failures in bdf that get caught by du and df. Here's a link to a vx_badmap error from syslog I ran across.

http://forums13.itrc.hp.com/service/forums/questionanswer.do?threadId=1252533

[Vivek Bhatia]

Hi carsten,

1. When you run du -sk command then it will show you the total size of the files present in that directory.

2. Whereas in bdf it gives the information with respect to the filesystem.

Example:
#bdf /opt/test
Filesystem kbytes used avail %used Mounted on
/dev/vg00/lvol10 573440 293501 262834 53% /opt/test
#du -sk /opt/test
291536 /opt/test

But incase if you have any other mount point under /opt/test then there will be great difference in du and bdf output.

Regards
Vivek