2. High Level Design
With the default block size of 4KiB, each group will contain 32,768 blocks, for a length of 128MiB . The number of block groups is the size of the device divided by the size of a block group. All fields in ext4 are written to disk in little-endian or
ext4
ext4 ; 16–256 TiB (for 4–64 KiB block size) · 4 billion (specified at filesystem creation time) · 255 bytes (fewer for multibyte character encodings such as ...
EXT4 for very large (>1GB) files
At the moment, the default size of a block is 4KiB, which is a commonly supported page size on most MMU-capable hardware. This is fortunate, as ...