Re: Inode limit

With 32765 subdirectories, I cannot create a new subdirectory, but I can create a new file.
In fact I think that the limit is on the number of links available for a file (each subdirectory has a link on the directory via the .. dot dot).

Is this maximum number of links on a file a system tunable parameter ?

Regards.
-- JMM

-----------------------------
Jean-Marc MONNEZ
MSA / AGORA / ATD
monnez.jean-marc@xxxxxxxxxxxx
-----------------------------

Jean-Marc Monnez a écrit :

Thanks, Bill, but I mean in a number of sub directories inside the same directory
If I try this (oslevel 5200-05) :
- choose a JFS file system with more than 33000 available inodes
- and run these commands :
mkdir thedir
cd thedir
typeset -Z8 i
i=1
while (( $i < 33000 ))
do
if mkdir tst${i}
then
echo tst${i}
else
break
fi
i=$(($i + 1))
done

and for me it stops at 32765.

What I guess is :
32765 = (2^15 -1) -2
seems to me that addresses are like on short signed integer (16 bits)
minus sign bit means 15 significant bits = 2^15 -1

ending -2 is for . (dot) and .. (dot dot) entries.

Is it different for you ?

Thanks
-- JMM

-----------------------------
Jean-Marc MONNEZ
MSA / AGORA / ATD
monnez.jean-marc@xxxxxxxxxxxx
-----------------------------

Bill Verzal wrote :

The number of inodes is dependent on the size of the file system and the nbpi
parameter of the filesystem.

BV

--- Jean-Marc Monnez <monnez.jean-marc@xxxxxxxxxxxx> wrote:

Inside every directory, you can create entry points (new files or
sub-directories).
What is the effective limit number for these entry points :
- 32768 (means address on 16 bits and would be fixed)
- or a general system tunable parameter that I don't know
- or the inode table of the current file system (depends on the FS size
and nbpi parameter)

TIA
-- JMM

-----------------------------
Jean-Marc MONNEZ
MSA / AGORA / ATD
monnez.jean-marc@xxxxxxxxxxxx
-----------------------------



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