Re: max ext2/3 filesystem and file size

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On Wed, 2006-07-19 at 16:01 +0300, Gilboa Davara wrote:
> On Wed, 2006-07-19 at 13:49 +0100, T. Horsnell wrote:
> > I'm trying to find the maximum size of an ext3 filesystem
> > and the maximum size of a file within that system.
> > 
> > linux-2.6.17/Documentation/filesystems/ext2.txt says:
> > 
> > Filesystem block size:     1kB        2kB        4kB        8kB
> > 
> > File size limit:          16GB      256GB     2048GB     2048GB
> > Filesystem size limit:  2047GB     8192GB    16384GB    32768GB
> > 
> > There is a 2.4 kernel limit of 2048GB for a single block device, so no
> > filesystem larger than that can be created at this time.  There is also
> > an upper limit on the block size imposed by the page size of the kernel,
> > so 8kB blocks are only allowed on Alpha systems (and other architectures
> > which support larger pages).
> > 
> > Does anyone know if the '2.4 kernel limit of 2048GB' has been raised
> > in the 2.6 kernels? Has anyone successfully built an ext2/3 > 2TeraBytes?
> > If so, what kernel are you using and what did you use to label the
> > device? fdisk/sfdisk/parted/...
> > 
> > Cheers,
> > Terry
> 
> AFAIR 2.6 file size limit is 2TB.
> Work is being done (ext4) to raise this limit.
> 
> Gilboa
> 

>From the Ext3 FAQ :
"In 2.6 the maximum (32-bit CPU) limit is of block devices is 16TB, but
ext3 supports only up to 4TB."

Further information here http://lwn.net/Articles/187321/ reveals "It
imposes a per-file maximum size of about 4 TB"


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