Filesystem grows not knowing what grows

[Morten Kristiansen]

Hi,

we have a RP-7420 running hp-ux 11.11 which is attatch to a EVA-5000. One of the disks on EVA have oracle installed on it. The problem is that someting is growing and soon the disk will be full. I'm not able to see what it is, thus du command differs from the bdf. Here is a output run 6 hours ago:
# du -sk /app
5632836 /app
# bdf|grep app
/dev/app/lvol1 26206208 22069596 4077224 84% /app

And here is what the system says now:

# du -sk /app
5629092 /app
# bdf|grep app
/dev/app/lvol1 26206208 23567204 2603016 90% /app

As you can see the df-command says that the usage has grown 1,5 GB, but the du-command says that the /app disk has been reduced by 3,8 MB.

Can anybody help me with this one?

Thanks in advance

[Morten Kristiansen]

We resolved this. The cause was probably Oracle writing to a deleted file. When Oracle was shut down, the space was released and the du- and bdfcommand was "in sync" again.

[Morten Kristiansen]

see solution above