How does Linux calculate inode value?

An inode number stores all the information about a regular file, directory, or other file system object, except its data and name. To find an inode, either use the ls or stat command.

How increase inode count in Linux?

When creating a new file system on a partition, you can use the -i option to set the bytes-per-inode (bytes/inode ratio), the larger the bytes-per-inode ratio, the fewer inodes will be created. The following example shows how to create an EXT4 file system type with a small bytes-per-inode ratio on a 4GB partition.