Hi Jan, I have a set of unit tests (part of the larger system) for the send-receive functionality, with which I am able to hit this error: Jan 28 18:01:00 687-dev kernel: [16968.451358] btrfs: ERROR did not find backref in send_root. inode=259, offset=139264, disk_byte=4263936 found extent=4263936 As the code states, this could indicate a bug in backref walking. This reproduces with "for-linus" branch. Typically this happens when a snapshot is deleted, immediately a new snap with the same name is created, and then "btrfs send" is issued without parent (i.e., full-send) on this snap. To debug this further, we can do one of two things: # I can apply patches/debug prints & reproduce # I can work to isolate the unit test into a bash script and send you a script that reproduces Please let me know. Thanks, Alex. -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
