Re: bugs in df [problem of fileutils or kernel?]

[Nico Schottelius <schottelius@wdt.de>]

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Alfred M. Szmidt [Tue, Dec 31, 2002 at 08:17:16PM +0100]:
>    I am using 2.5.53,ext3 on /dev/root,isofs on /mnt/dvd and df is
> 
> 2.5.53 of what exactly?

the kernel. I will try 2.5.54 soon,too.

>    flapp:/home/user/nico # df --version
>    df (GNU fileutils) 4.0.35
> 
> Could you try and see if this still presists in GNU Fileutils 4.1 [1]?

nico@flapp:~/fileutils-4.1/src $ ./df  -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/root              18G   19G  136M 100% /
/dev/cdroms/cdrom0     71M   71M     0 100% /mnt/dvd
nico@flapp:~/fileutils-4.1/src $ ./df
Filesystem           1k-blocks      Used Available Use% Mounted on
/dev/root             19228276  19088984    139292 100% /
/dev/cdroms/cdrom0       72434     72434         0 100% /mnt/dvd
nico@flapp:~/fileutils-4.1/src $ ./du /mnt/dvd/ -sh
505M    /mnt/dvd


yes, it does.

> Or if you feel brave GNU Coreutils (an merge of Fileutils, Shutils and
> Textutils) [2]? 

nico@flapp:~/coreutils-4.5.4/src $ ./df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/root             19228276  19080532    147744 100% /
/dev/cdroms/cdrom0       72434     72434         0 100% /mnt/dvd
nico@flapp:~/coreutils-4.5.4/src $ ./df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/root              19G   19G  145M 100% /
/dev/cdroms/cdrom0     71M   71M     0 100% /mnt/dvd
nico@flapp:~/coreutils-4.5.4/src $ ./du /mnt/dvd/ -sh
505M    /mnt/dvd/

yes, it does. but at least is the size now correct in -h.

====> now trying with 2.5.54 <====
nico@flapp:~ $ df
Filesystem           1k-blocks      Used Available Use% Mounted on
/dev/root             19228276  19086992    141284 100% /
/dev/cdroms/cdrom0       72434     72434         0 100% /mnt/dvd
nico@flapp:~ $ df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/root              18G   19G  137M 100% /
/dev/cdroms/cdrom0     71M   71M     0 100% /mnt/dvd
nico@flapp:~ $ df --version
df (fileutils) 4.1

and the cdrom is again 505 MB big...

nico@flapp:~/coreutils-4.5.4/src $ ./df
Filesystem           1K-blocks      Used Available Use% Mounted on
/dev/root             19228276  19087008    141268 100% /
/dev/cdroms/cdrom0       72434     72434         0 100% /mnt/dvd
nico@flapp:~/coreutils-4.5.4/src $ ./df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/root              19G   19G  138M 100% /
/dev/cdroms/cdrom0     71M   71M     0 100% /mnt/dvd
nico@flapp:~/coreutils-4.5.4/src $ ./du /mnt/dvd/ -sh
505M    /mnt/dvd/


==> so coreutils at least prints correct human values...
    I am still thinking it could be a kernel bug..so I am rebooting to
    2.4.21-pre2.

But this does not make a difference...

> If it still exists in those, could you try debugging
> it?

nice,1002 lines of code in df.c.. okay, let's have a look into it...
(currently I think it _could_ be a kernel bug, so I will pass this message
alon to lkml)

I had a quick view at the code, but didn't have the time to look into
it closely. Perhaps the next days!

Am I the only one where df reports wrong disk space?

Nico


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