Module send_receive 

Send and receive: generating and applying btrfs send streams

The send side wraps BTRFS_IOC_SEND, which produces a binary stream representing the contents of a read-only subvolume (or the delta between a parent and child snapshot).

The receive side wraps the ioctls used when applying a send stream: marking a subvolume as received (SET_RECEIVED_SUBVOL), cloning extents between files (CLONE_RANGE), writing pre-compressed data (ENCODED_WRITE), and searching the UUID tree to locate subvolumes by their UUID or received UUID.

Structs

SendFlags

Flags for the send ioctl.

SubvolumeSearchResult

Result of searching the UUID tree for a subvolume.

Functions

clone_range

Clone a range of bytes from one file to another using BTRFS_IOC_CLONE_RANGE.

encoded_write

Write pre-compressed data to a file using BTRFS_IOC_ENCODED_WRITE.

received_subvol_set

Mark a subvolume as received by setting its received UUID and stransid.

send

Invoke BTRFS_IOC_SEND on the given subvolume.

subvolume_search_by_received_uuid

Search the UUID tree for a subvolume by its received UUID.

subvolume_search_by_uuid

Search the UUID tree for a subvolume by its UUID.