Run out of inodes. What to do?

Question

Debian

It happens on a virtual server from fastvps. OS: Debian 7.4 Wheezy. FS: ext4
There is a directory with a large number of pictures (1.5+ million). The number of pictures will increase significantly.
Run out of inodes. How to be?
I thought about uploading images to dropbox from time to time and inserting them into the site using direct links. But I read that dropbox does not treat this kind of thing well and deletes accounts.
Tell me what can be done?

Answer 1

Amazon S3 if the budget allows.
If there is no budget, then you can make a disk in a file, format it in reiserfs (inodes are not limited there), transfer pictures there and mount it in the desired directory. There will be a small overhead, of course, but in principle an option.
The shell will look something like this:

dd if=/dev/zero of=/path/to/virtual.disk bs=1M count=4096
aptitude install reiserfsprogs
mkfs.reiserfs /path/to/virtual.disk
mount -t reiserfs /path/to/virtual.disk /mnt
mv /path/to/images/dir /mnt
umount /mnt
mount -t reiserfs /path/to/virtual.disk /path/to/images/dir

Don't forget to check the documentation before you do anything.