I don't understand, why linux doesn't support as drivers, it is way for many other operating systems / kernels.įile systems supports deduplication by 2 ways, deduplicate files, or blocks. Then you must patch kernel, and next install zfs tools for managament. If you want native support, look at the page.

This is available as FUSE, but in this way it's very slow. Look at the page:, specialy at the table Features and column data deduplication. You can use BTRFS (very popular last time), OCFS or like this. Inode number is then saved, and original file content is destroyed (replaced) for all hardlinked names.īetter way is deduplication on filesystem layer. It is enough, any user put other file in the same name. You should prevent modification that file, because any user can damage file to other. This cause, all file names linked to the same inode, have the same access rights. Only file names are different because this is stored in directory structure, and other points to INODE properties. Notice, owner, group, mode, extended attributes, time and ACL (if you use this) is stored in INODE. If you'll do hardlinks, pay attention on rights on that file.

Dupeguru linux