bcachefs support ?

[necrose99]

bcashfs i've been looking to tinker with as it has volume encryption baked in however

but no native dedupe

for laptop testing were client data might be stored ...

btrfs been my work hoarse for years ,

as bxashfs becomes more stable might be handy to have in some cases,

[Zygo]

bees requires the following features in a filesystem, in addition to the core dedupe feature set:

1. extents (not files) labelled by some monotonically increasing timestamp on new data (btrfs labels all extents with gen/transid numbers)
2. search of extents and other metadata by ranges of position and label (btrfs provides TREE_SEARCH_V2 which can search for extents within ranges of gen/transid labels and ranges of bytenr addresses)
3. reverse-mapping extents to filename/offset pairs (btrfs provides LOGICAL_INO and INO_PATHS, though obviously (hopefully?) other filesystems may have different interfaces)
4. in the future, read access to the csums data (btrfs provides this via TREE_SEARCH_V2, though bees doesn't use it yet)

If a filesystem is missing those, then that filesystem cannot do much better than duperemove.