How to increase inodes?

To increase the number of inodes on a filesystem, you typically need to create a new filesystem with a higher inode count. Here are the steps to do this using the mkfs command:

Backup Data: Before making any changes, ensure that you back up any important data on the filesystem.
Unmount the Filesystem: If the filesystem is currently mounted, unmount it using:
```
sudo umount /dev/sdXn
```
Replace /dev/sdXn with the appropriate device identifier.
Create a New Filesystem with Increased Inodes: Use the mkfs command with the -N option to specify the number of inodes. For example, to create an ext4 filesystem with a specific number of inodes:
```
sudo mkfs.ext4 -N <number_of_inodes> /dev/sdXn
```
Replace <number_of_inodes> with the desired number of inodes and /dev/sdXn with the appropriate device identifier.
Mount the Filesystem: After creating the new filesystem, mount it back:
```
sudo mount /dev/sdXn /mount/point
```
Restore Data: Restore your data from the backup you created earlier.

Note:

The number of inodes is typically determined by the filesystem size and the inode ratio. You can also specify the inode ratio using the -i option when creating the filesystem, which controls how many bytes each inode will use.
Always ensure you have backups before modifying filesystems, as these operations can lead to data loss if not done carefully.