wich filesystem to store > 250E6 small files in same or hashed dire

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Hi

I need to store about 250.000.000 files. Files are less than 4k.

On a ext4 (fedora 14)  the system crawl at 10.000.000 in the same directory.

I tried to create hash directories, two level of 4096 dir = 16.000.000
but I had to stop the script to create these dir after hours
and "rm -rf"  would have taken days ! mkfs was my friend

I tried two levels, first of 4096 dir, second of 64 dir. The creation
of the hash dir took "only" few minutes,
but copying 10000 files make my HD scream for 120s ! I take only 10s
when working in the same directory.

The filenames are all 27 chars and the first chars can be used to hash
the files.

My question is : Which filesystem and how to store these files ?

Regards

-- 
Alain Spineux                   |  aspineux gmail com
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