Re: ext3 4TB fs limit on amd64 (FAQ?)

[Chris Allen <chris cjx com>]

Christian Kujau wrote:
> On Sun, 26 Nov 2006, Ralf Gross wrote:
> > I've a question about the max. ext3 FS size. The ext3 FAQ explains that
> > the limit is 4TB.
>
> Hm, strange: I'm pretty sure that mkfs.ext3 understands bigger 
> blocksizes for quite a while now. Then again, the FAQ says "Version: 
> 2004-10-14"...
>
> So, although I'd really love to have this information (and the FAQ!) on
> http://e2fsprogs.sf.net/  this is what I found:
>
> blocksize    file size limit     filesystem size limit
>  1 KiB        16448 MiB (~ 16 GiB)    2048 GiB (= 2 TiB)
>  2 KiB         256 GiB         8192 GiB (= 8 TiB)
>  4 KiB        2048 GiB (= 2 TiB)     16384 GiB (= 16 TiB)
>  8 KiB         65568 GiB (~ 64 TiB)     32768 GiB (= 32 TiB)
>
> Note that an 8 KiB blocksize is only supported on systems with 8 KiB 
> pagesize (i.e. linux/alpha).

We use 6TB ext3 filesystems over vanilla Fedora Core 5 on several 
heavily loaded systems.
All perform fine without any obvious problems.