The copy of fsck.btrfs is triggered by the hook script carried in btrfs-tools. This is therefore not a initramfs-tools bug. This appears to be fixed in the following btrfs-tools upload:
btrfs-tools (4.0-2) unstable; urgency=medium
* Adjust initramfs hooks and udev rules for move of all binaries to
/bin. (Closes: #784234)
-- Dimitri John Ledkov <email address hidden> Mon, 04 May 2015 18:51:07 +0100
The copy of fsck.btrfs is triggered by the hook script carried in btrfs-tools. This is therefore not a initramfs-tools bug. This appears to be fixed in the following btrfs-tools upload:
btrfs-tools (4.0-2) unstable; urgency=medium
* Adjust initramfs hooks and udev rules for move of all binaries to
/bin. (Closes: #784234)
-- Dimitri John Ledkov <email address hidden> Mon, 04 May 2015 18:51:07 +0100