3 ms·

I guess so, I just didn't know when I created the swapfile and was surprised later when I tried to create a snapshot.

• xorcist 3y ago
  Be careful, just like disk images, you probably don't want to place swapfiles on a CoW filesystem.
  • Bu9818 3y ago
    You can mark individual files as No_COW in btrfs, and No_COW + preallocation is a requirement for swapfiles anyway due to how the swap subsystem works.