Hi,

I heard that the number of sub-folders / files in a linux directory should
not exceed 32,000 . There is not enough material available in the net.

I am maintaining a blogging server in my company, using Wordpress MU. If
the sub-folders limit is true, then it will critically affect the
application that we are running.

We are using RHEL 4 with ext3 file system.

Can any one provide some details on this..?

Thanks in advance

How?

To begin with, I have no experience/knowledge on this.

I only suppose that there is a limit on the number of inodes one can
have.

I think it is possible to raise the limit by changing a #define and
recompiling the kernel. Or there could be other file system specific
fixes.

As to possible choices between file systems under linux again I dunno
much. I would imagine that XFS is good.

Just a wild idea. If you have a problem with this, how about using some
kind of virtual machine? Say qemu or UML?

You could split up the load across them.

Xen is also a good choice.

Anyway already I am out of my province.

Best of luck!

__________________
A.Rajesh Khanna

Yes, you are right, it is not allowing to create more than 32000 subfolders.
This is what I tried
-bash-2.0# for (( i = 0 ; i <= 32001; i++ )); do mkdir test$i;
done
at the end around 3199x count i got the message,
"cannot create directory `last': Too many links"
I used http://linuxzoo.net/ Fedora image as my test machine,

Thanks

Thank you friends

But honestly, 32000 subfolders in the same level sounds scary to me.

__________________
Shaalini.S
Be the Best of Whatever you are...

I hope, the limit is hardcoded in the FS header files.

$ grep 32000 /usr/include/linux/*

ext2_fs.h:#define EXT2_LINK_MAX 32000
ext3_fs.h:#define EXT3_LINK_MAX 32000
ufs_fs.h :#define UFS_LINK_MAX 32000

Thanks

__________________
J Suresh Kumar
Google Hacks