[PATCH 0/7] Add data to datalog, add replay tool

[Manfred Spraul <manfred@colorfullife.com>]

Hi,

As announced, here is the initial series for adding a replay tool.

Patch 1: Add support for pretty-printing WRITE_ZEROS and TRIM to
        nbd-trdump. I've added a 'static inline' helper function to a
        new header file.
	Is the approacch good? As alternative, I could add the function
	to e.g. cliserv.{c,h}. Would that be preferred?

Patch 2: Add actual data logging to nbd-server
	I've defined a new flag to indicate that actual data will follow.
	Any better ideas?

Patch 3: Add locking.
	Is sem_open() portable enough? Should I add a few fallbacks?

Patch 4: Add logging of the replies to nbd-server.

Patch 5: Add a new tool nbd-trplay
	Did I update Makefile.am correctly?

Patch 6: Initial CLI.
Patch 7: Actual implementation.

I've used the code a bit, and it seems that it finds at least
one suspicious case with ext4:
https://lore.kernel.org/all/baa3101d-e2f7-823e-040f-8739ab610419@colorfullife.com/

--
	Manfred