How many inodes are stored in every single disk block? Does every inode need to be stored in a separate block even if it does not completely fit in it?
The number of iNodes is a parameter that can be change while making the filesystem on a block device.
The parameter has it limits and it is diffrent on each Filesystem.
There is a default value for number of iNodes and it been calculated by the size of the Filesystem and the Filesystem type.
Every iNode will be stored in a diffrent block and even on number of diffrent blocks, even if it does not completely fit in.