[blfs-support] du on / produces errors from /proc

akhiezer lfs65 at cruziero.com
Fri Dec 6 02:42:35 PST 2013


> Date: Fri, 06 Dec 2013 11:35:35 +0100
> From: Pierre Labastie <pierre.labastie at neuf.fr>
> To: BLFS Support List <blfs-support at linuxfromscratch.org>
> Subject: Re: [blfs-support] du on / produces errors from /proc
>
> Le 06/12/2013 10:56, Richard Melville a écrit :
> >
> >     Le 05/12/2013 18:18, Richard Melville a ?crit :
> >     > Does anybody know what causes the following:-
> >     >
> >     > du: cannot access '/proc/602/task/602/fd/4': No such file or
> >     directory
> >     > du: cannot access '/proc/602/task/602/fdinfo/4': No such file or
> >     directory
> >     > du: cannot access '/proc/602/fd/4': No such file or directory
> >     > du: cannot access '/proc/602/fdinfo/4': No such file or directory
> >     >
> >     >
> >     What were you doing? Building some package? What is the command which
> >     generated that output?
> >
> >     Regards
> >     Pierre
> >
> >
> > I was just checking disk space with du -sh / as root.  That was the 
> > only output apart from the requested disk space.
> >
> > Richard
> >
> >
> /proc/602 is a system directory associated to the process number 602. I 
> guess du first finds 602 inside proc when listing the directory /proc, 
> then tries to open it. If 602 is a transcient process (that is it runs 
> for a short time), it may happen that it has disappeared before the 
> second time it is accessed.
>
> You may add --exclude=/proc to the command linen but I think it is harmless.
>


 - and/or use the '-x' flag if it's really just the '/' partition that you 
want info for.


If you're wanting info on the full filesys tree, then perhaps something like 
'df [-a] -hP --total'; as for 'du', there are various command-line options to 
adjust the format to suit what you want.



akh





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