Re: [Genext2fs-devel] Handling for very large filesystems

[Corey M. <mi...@ac...>]

On 06/01/2011 11:33 AM, Finn Thain wrote:
>> My guess is that a contemporary 64 bit operating system should be able
>> to alloc (or mmap) a filesystem image large enough to reach the size
>> limitations inherent in the revision 0 ext2 filesystem structure... but
>> someone really needs to do the math.
> Out of curiosity I googled the answers. The upper bound on the filesystem
> block count* is said to be 2 ^ 31 - 1 blocks (i.e. 2 TB for 1 KB block
> size). On a 64 bit system, the virtual address space is probably 256 TB.
That sounds right.  Though you still have to have backing store of some 
type, though, for that memory.

-corey