Q: The df command indicates that a filesystem is full, however, the du
command indicates that not all space is allocated. How would the system
administraor isolate the discrepancy?

1. Use the fuser command to identify deleted but open files.
2. Use the ipcs command to view orphan shared memory segments.
3. Use the defrag command to determine if the filesystem is fragmented.
4. USe the topas command to identify processes using the most system
resoruces.

I think the answer is fuser and if so, how can you have a deleted file
and still have it open? Is it still in Memory, is that why it could be
open?

Thanks!

dawaves@gmail.com wrote:
> Q: The df command indicates that a filesystem is full, however, the du
> command indicates that not all space is allocated. How would the system
> administraor isolate the discrepancy?
>
> 1. Use the fuser command to identify deleted but open files.
> 2. Use the ipcs command to view orphan shared memory segments.
> 3. Use the defrag command to determine if the filesystem is fragmented.
> 4. USe the topas command to identify processes using the most system
> resoruces.
>
> I think the answer is fuser and if so, how can you have a deleted file
> and still have it open? Is it still in Memory, is that why it could be
> open?
>
> Thanks!
>
It is possible to delete a file that is still kept open by a user.
Even though the directory entry for a file is gone, file file isn't.
Once the user closes the file, the disk space is released.

So answer #1 would be the correct answer b/c fuser can see what files
are still open in that directory right?

In article <1147196388.933146.104020@v46g2000cwv.googlegroups .com>, dawaves@gmail.com <dawaves@gmail.com> wrote:
> So answer #1 would be the correct answer b/c fuser can see what files
> are still open in that directory right?

You got it. lsof would also be a good alternative, but it's not a
bundled AIX tool so it won't show up as a test answer option.

-Dan

Thanks!