[Fwd: RHEL connundrum with df and du]

[Michael_E_Brown at Dell.com]

You might have deleted files. 
  # lsof | grep deleted

http://www.google.com/search?hs=KY7&hl=en&lr=&client=firefox-a&rls=org.m
ozilla%3Aen-US%3Aofficial&q=deleted+files+du+df+lsof&btnG=Search

--
Michael 

> -----Original Message-----
> From: linux-poweredge-bounces at dell.com 
> [mailto:linux-poweredge-bounces at dell.com] On Behalf Of 
> Sankarshan Mukhopadhyay
> Sent: Sunday, November 05, 2006 11:14 PM
> To: linux-poweredge-Lists
> Cc: haven at thehavennet.org.uk
> Subject: [Fwd: RHEL connundrum with df and du]
> 
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> 
> Fwd-ing to the Dell Poweredge list for a possible faster response
> 
> :SM
> 
> - -------- Original Message --------
> Subject: RHEL connundrum with df and du
> Date: Thu, 2 Nov 2006 16:13:34 -0000 (UTC)
> From: Simon Alman <haven at thehavennet.org.uk>
> Reply-To: haven at thehavennet.org.uk
> To: ext3-users at redhat.com
> 
> Hi All
> 
> I am having an issue with disk space and since it is 
> happening using an
> ext3 formatted partition I felt that this would be the most 
> appropriate list to post to.
> 
> The problem is this; I have access to two RHEL systems (one 
> running RHEL3 and one running RHEL4). Both are in the same 
> company and both exhibit the same problem that I have not 
> seen anywhere else before.
> 
> Both have full / partitions. df shows this to be the case so 
> it must be true ... right ?
> 
> Well du disagrees, on one system with a full 20GB / parition 
> that df shows to be full, df can only find 3.6GB of files.
> 
> So off to the redhat FAQ I went and found this:
> http://kbase.redhat.com/faq/FAQ_35_5209.shtm
> 
> Great that explains the problem precisely ... except it 
> didn't help. No processes were holding large deleted files in 
> a locked state.
> 
> So I looked at inodes thinking that they may have all been used up ...
> they haven't df shows only 5% inode usage.
> 
> I forced an fsck run on the partition on reboot and neither 
> this nor the reboot helped, fsck shows clean and after the 
> reboot things were still broken.
> 
> So I'm sat here trying to explain to the client why their 5k 
> worth of dell server is currently no much use to them (I 
> can't install anything on it due to the space issue ...).
> 
> Has anyone come across anything similar before ? I've worked 
> with linux for six years and this is a new one on me ... and 
> twice in the same company. I suspect major kernel b0rkage 
> since both systems use Dell's RHEL build for the specific 
> model of server but proving it is beyond me right now.
> 
> Any help/advice would be very gratefully appreciated.
> 
> Kind regards
> 
> Simon Alman
> 
> 
> 
> 
> - --
> 
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