[KLUG Members] Re: file size limit

[Peter Buxton]

On Mon, Sep 16, 2002 at 03:06:09PM -0400, John Pesce wrote:

> I have an ext3 filesystem on my server. It won't let me make a tar file
> larger than 2G. Before I switched to ext3 I was using ext2 and often would
> tar up my home directories into a 23G-ish file.
> Why won't it let me now?

Maybe they compiled ext2 with different values.

 From linux-2.4.19/fs/ext3/super.c:

#define log2(n) ffz(~(n))

/*
 * Maximal file size.  There is a direct, and {,double-,triple-}indirect
 * block limit, and also a limit of (2^32 - 1) 512-byte sectors in
 * i_blocks.
 * We need to be 1 filesystem block less than the 2^32 sector limit.
 */
 static loff_t ext3_max_size(int bits)
 {
    

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