Matti Aarnio writes:
> It depends on many things:
> - Block layer (unsigned long)
> - Page indexes (unsigned long)
> - Filesystem format dependent limits
> - EXT2/EXT3: u32_t FILESYSTEM block index, presuming the EXT2/EXT3
> is supported only up to 4 kB block sizes, that gives
> you a very hard limit.. of 16 terabytes (16 * "10^12")
You first hit the triple-indirection limit at 4 TB.
http://www.cs.uml.edu/~acahalan/linux/ext2.gif
> - ReiserFS: u32_t block indexes presently, u64_t in future;
> block size ranges ? Max size is limited by the
> maximum supported file size, likely 2^63, which is
> roughly 8 * "10^18", or circa 500 000 times larger
> than EXT2/EXT3 format maximum.
The top 4 st_size bits get stolen, so it's 60-bit sizes.
You also get the 32-bit block limit at 16 TB.
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