2 ms·
It's close enough. A completely valid use case for shrinking a btrfs file system is to remove one of the physical volumes from it, of which there can be several
by xorcist 8y ago
It's close enough. A completely valid use case for shrinking a btrfs file system is to remove one of the physical volumes from it, of which there can be several. They can also be split into subvolumes, which is the canonical use case for partitioning your block storage.
- wtallis 8y agoNeither of those use cases involves the `btrfs filesystem resize` command. Removing a physical device is accomplished with `btrfs device remove`, and subvolumes don't have a capacity unless you enable the optional quota features (and even then, quota groups use thin provisioning, so setting a lower quota limit doesn't free up any space for anything else).