mhz, 9 months ago

I like to think a subvolume is a directory on my filesystem that:

• Acts as an independent filesystem.
• Shares it’s parent size (unless quotas are set in place)
• Can be mounted/unmounted any time
• Excluded from their parent partition’s snapshots. (a /home subvolume is exluded from / snapshots).
• Can be snapshot-ed independently.

This is by no mead a definition for BTRFS subvolume, but I hope you get the idea.