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From: =?ISO-8859-1?Q?=22Beerse=2C_Corn=E9=22?= <c.beerse@torex-hiscom.nl>
To: 'Javier Gonzalez Arenas' <jgonzalez@conatel.com.uy>
Subject: RE: [HPADM] free disk space not released after a file remove
Date: Tue, 16 Sep 2003 04:24:23 -0300
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Are you realy sure it is a 2 GB file? Or is it a file with just some
info around the 2GByte data address inside the file?
 
`df` and `bdf` check the free (and used) space on the file system.
`ls -l` shows the highest used addess in the file.
`du` shows the disk-usage of the file or directory.
 
Hence, see if `du hugefile` shows a lot of data or not. If not, then it
is just some data around the 2GB data address. On a 32 bit (file-)
system, that is the upper limit of the file size. So it can be used as a
check to see if it is a 32 bit or 64 bit filesystem, appearing to use a
lot of data but only occupying 2 blocks. The trick used is to write some
data from at 2^31 + 10. Then read it back at address 10. if you get the
written data, it is 32bits, else it is save to say 64 bits file
addresses can be used. If not cleaned, it leaves a file that shows a
size of 2GB and might also use that in a backup....
 
What is the size of the 2 GB file if you zip it? if it drops down to a
couple of blocks, then it is save to say it is a discontinue file.
 
If the above is not the situation, i'm off (but curious to know what it
can be)
 
CBee
 
 
 

-----Original Message-----
From: Javier Gonzalez Arenas [mailto:jgonzalez@conatel.com.uy]
Sent: maandag 15 september 2003 21:38
To: hpadm
Subject: [HPADM] free disk space not released after a file remove


Hello admins,
 
At HP-UX 11.00 I have removed a 2 GB file without seen that space
increasing the available free space in the filesystem.
 
The filesystem type is hfs and I have used bdf to check their size and
space availability.
 
The same thing has happened in another filesystem.
 
I've done a successful umount and fsck just to see that nothing has
changed.
 
Any help would be appreciated.
 
Regards,
javier