inode-block ratio

Question

How we can find the ratio of inodes to blocks? How can we change that ratio?

Answer 1

To get the ratio, it's going to depend on the filesystem.

On ext2/3/4 then

tune2fs -l /dev/special

will display all the paramaters. You'll have to calculate the ratio yourself.

There isn't any way to change the ratio on an existing ext2/3/4 filesystem you have to create a new filesystem.

Answer 2

On my Ubuntu system:

sudo tune2fs -l /dev/sda1

Will get you this sort of output:

Blocks per group:         32768
Fragments per group:      32768
Inodes per group:         8192
Inode blocks per group:   512
...
Inode size:           256

This assumes you're using an ext2, ext3, or ext4 filesystem. The disk shown is using ext4.