qcow2: remove qcow2 target

The implementation is very rough, and there are many bugs,
so remove it.

Signed-off-by: Ming Lei <[email protected]>

Makefile.am

@@ -15,9 +15,7 @@ sbin_PROGRAMS = ublk ublk_user_id
 noinst_PROGRAMS = demo_null demo_event
 dist_sbin_SCRIPTS = utils/ublk_chown.sh utils/ublk_chown_docker.sh
 
-ublk_SOURCES = ublksrv_tgt.cpp tgt_null.cpp tgt_loop.cpp qcow2/tgt_qcow2.cpp \
-			   qcow2/qcow2.cpp qcow2/qcow2_meta.cpp qcow2/utils.cpp \
-			   qcow2/qcow2_flush_meta.cpp \
+ublk_SOURCES = ublksrv_tgt.cpp tgt_null.cpp tgt_loop.cpp \
 			   nbd/tgt_nbd.cpp nbd/cliserv.c nbd/nbd-client.c
 ublk_CFLAGS = $(WARNINGS_CFLAGS) $(LIBURING_CFLAGS) $(PTHREAD_CFLAGS)
 ublk_CPPFLAGS = $(ublk_CFLAGS) -I$(top_srcdir)/include
@@ -41,7 +39,7 @@ ublk_user_id_LDADD = lib/libublksrv.la $(LIBURING_LIBS) $(PTHREAD_LIBS)
 pkgconfigdir = $(libdir)/pkgconfig
 pkgconfig_DATA = ublksrv.pc
 
-CLEANFILES = *~ test cscope.* include/*~ *.d qcow2/*~ nbd/*~ utils/*~ doc/html/*
+CLEANFILES = *~ test cscope.* include/*~ *.d nbd/*~ utils/*~ doc/html/*
 
 R = 10
 D = tests/tmp/

README.rst

@@ -103,16 +103,6 @@ or
 
 - ublk add -t loop -f 1.img
 
-
-add one qcow2 disk
-------------------
-
-- ublk add -t qcow2 -f test.qcow2
-
-note: qcow2 support is experimental, see details in qcow2 status [#qcow2_status]_
-and readme [#qcow2_readme]_
-
-
 remove one ublk disk
 --------------------
 
@@ -305,8 +295,6 @@ by MIT license.
 The library functions (all code in lib/ directory and include/ublksrv.h)
 are covered by dual licensed LGPL and MIT, see COPYING.LGPL and LICENSE.
 
-qcow2 and nbd target code is covered by GPL-2.0, see COPYING.
-
 All other source code are covered by dual licensed GPL and MIT, see
 COPYING and LICENSE.
 
@@ -316,7 +304,5 @@ References
 .. [#ublk_driver] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/block/ublk_drv.c?h=v6.0
 .. [#zero_copy] https://lore.kernel.org/all/[email protected]/
 .. [#nlohmann] https://github.com/nlohmann/json
-.. [#qcow2_status] https://github.com/ming1/ubdsrv/blob/master/qcow2/STATUS.rst
-.. [#qcow2_readme] https://github.com/ming1/ubdsrv/blob/master/qcow2/README.rst
 .. [#build_with_liburing_src] https://github.com/ming1/ubdsrv/blob/master/build_with_liburing_src
 .. [#stefan_container] https://lore.kernel.org/linux-block/[email protected]/