How to limit the maximum size of a directory?

Question

linux

Is it possible to limit the maximum size of a directory in linux? I need this in order to test how the application will behave when out of memory (maybe there are better ways).

Answer 1

Create a disk with a size of almost 100mb and mount to /home/user if such a directory exists:

dd if=/dev/zero of=/userdisk.fs bs=1024 count=100000
mkfs.ext3 /userdisk.fs
mount -t ext3 -o loop /userdisk.fs /home/user

Revert everything back:

umount /home/user
shred /userdisk.fs