max ext2/3 filesystem and file size
Gilboa Davara
gilboad at gmail.com
Wed Jul 19 13:01:30 UTC 2006
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
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