On Thu, Apr 25, 2019 at 11:24:30PM +0200, Andreas Dilger wrote:
> The check in mke2fs is intended to be for the number of blocks in the
> filesystem exceeding the maximum number of addressable blocks in 2^32
> bitmaps, which is (2^32 * 8 bits/byte * blocksize) = 2^47 blocks,
> or 2^59 bytes = 512PiB for the common 4KiB blocksize.
>
> However, s_log_blocksize holds log2(blocksize_in_kb), so the current
> calculation is a factor of 2^10 too small. This caused mke2fs to fail
> while trying to format a 900TB filesystem.
>
> Fixes: 101ef2e93c25 ("mke2fs: Avoid crashes / infinite loops for absurdly large devices")
> Signed-off-by: Andreas Dilger <adilger@xxxxxxxxx>
Thanks, applied.
- Ted
