Re: [gentoo-user] Ext3 FS File Size Limits

[Alan Mackenzie <acm@muc.de>]

Hello, Jörg.

On Sun, Jun 02, 2013 at 04:06:11PM +0200, Joerg Schilling wrote:
> Alan Mackenzie <acm@muc.de> wrote:

> > The wikipedia page on Ext3 says that with a 1kB blocksize, the maximum
> > file size is 16GB, but with a 2kB blocksize it's 256GB.  Could it be
> > you've somehow actually got a 1kB blocksize on the partition?

> Where does such a strange limitation come from?

Haven't a clue.  I would have expected the maximum file size to be a
number of blocks, which makes it seem strange that doubling the block
size multiplies max file size by 16.

> Ext* started as a UFS "clone" and UFS filesize is limited to 2**63 while
> UFS filesystem size is limited to 1 TB.

Just for ease of comparison, 16GB = 2**34 bytes = 2**24 1k blocks.  1TB =
2**40 bytes.

> That is much more than you claim for Ext3

I'm not doing any claiming, since I'm not an expert on the subject.  I
was just drawing the OP's attention to something which might be useful.

> Jörg

-- 
Alan Mackenzie (Nuremberg, Germany).