rsync

A 14G backup folder filled the root disk. The move-to-block-storage-with-symlink pattern relieves disk pressure without deleting backup data.

TL;DR: When the root disk hit 95 percent, the culprit was a 14GB WordPress plugin backup folder. Instead of deleting it, the fix moved the folder intact to block storage and left a symlink at the old path, dropping usage to 44 percent. Verify file counts, use absolute paths, and persist the mount in fstab to avoid dangling links.

One folder or five scattered paths? The shape of your include set decides when subtree split is safe and when an rsync snapshot wins.