Linux Cbt <iPad>

: Persistent, kernel-supported, accurate for thin volumes. Cons : Only works with LVM thin volumes, not raw disks or standard partitions. 3.4. Btrfs / ZFS Native Change Tracking Btrfs has btrfs send with snapshots: It efficiently computes differences between snapshots using a change-tracking mechanism. No explicit per-block bitmap is exposed, but btrfs send -p <parent> only sends changed extents.

For , the most practical CBT-like approach is: LVM thin snapshots + thin_delta or Btrfs/ZFS with incremental send . 5. Practical Implementation: LVM Thin CBT Script Here’s a minimal script demonstrating CBT concept using LVM thin. linux cbt

has zfs diff and zfs send -i for incremental streams. Internally, ZFS uses transaction groups and block pointers to identify changed blocks. : Persistent, kernel-supported, accurate for thin volumes