Explanation for these numbers
I am reading the explanation that is below in the 20.9.c. Block Groups III section. I read it several times and cannot understand this. Can someone explain this.
"The number of block groups is constrained by the fact that the block bitmap, which identifies used and free blocks within the group, has to fit in a single block. Thus, if a block is 4096 bytes in size, a block group can contain no more than 32 K blocks, or 128 MB. If we take the largest possible block group size, a 10 GB partition would thus have to have at least 80 block groups."