• mkfs:
  • make block-group-tree default (support since linux 6.1), use -O ^bgt to unset it for backward compatibility
  • speed up initial device discard by processing the ranges in order
  • disable block-group-tree feature if a dependent feature is explicitly unselected (like disabling no-holes), instead of erroring out
• check:
  • add ability to detect and fix missing orphan items in deleted subvolumes
  • add ability to fix inode refs from directory items
  • enhance detection on unknown inode keys
• libbtrfsutil:
  • minor version update to 1.4.0
  • add missing aliases for API updates done in 0.1.3, C and python
• libbtrfs:
  • patchlevel version update 0.1.5
  • error handling updates
• fixes:
  • with DUP profile and mixed sequential and conventional zoned make sure to track the right write pointers
  • scrub: fix ETA wraparound calculations, when many files get deleted during the operation bytes_scrubbed and bytes_total get too much out of sync, the ETA will be 0
• corrupt-block: add ability to specify key value when corrupting item keys
• experimental features:
  • initial remap tree support (new logical-to-logical mapping layer), coming in linux 7.0
• other:
  • documentation updates
  • CI updates, new and updated tests
  • code cleanups and refactoring