qemu-io - an I/O path exerciser (Christoph Hellwig)

This patch adds a new qemu-io tool that links against the block layer and
image formats and allow to exercise them without needing a guest image.
It is inspired by the xfs_io tool which does the same for plain file I/O.
In fact the libxcmd library which is the backend of xfs_io is reused by this
tool in a limited fashing (cmd.[ch] files).

This version tests out most of the plain block I/O commands with the
most notable absent commands beeing snapshot handling and real aio.

This tool is the basis of the I/O path test suite I'm working on right now.


Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6990 c046a42c-6fe2-441c-8c8c-71466251a162

Makefile

@@ -206,7 +206,9 @@ qemu-img$(EXESUF): qemu-img.o qemu-tool.o osdep.o $(BLOCK_OBJS)
 
 qemu-nbd$(EXESUF):  qemu-nbd.o qemu-tool.o osdep.o $(BLOCK_OBJS)
 
-qemu-img$(EXESUF) qemu-nbd$(EXESUF): LIBS += -lz
+qemu-io$(EXESUF):  qemu-io.o qemu-tool.o osdep.o cmd.o $(BLOCK_OBJS)
+
+qemu-img$(EXESUF) qemu-nbd$(EXESUF) qemu-io$(EXESUF): LIBS += -lz
 
 clean:
 # avoid old build problems by removing potentially incorrect old files

configure

@@ -1551,7 +1551,7 @@ esac
 
 tools=
 if test `expr "$target_list" : ".*softmmu.*"` != 0 ; then
-  tools="qemu-img\$(EXESUF) $tools"
+  tools="qemu-img\$(EXESUF) qemu-io\$(EXESUF) $tools"
   if [ "$linux" = "yes" ] ; then
       tools="qemu-nbd\$(EXESUF) $tools"
   fi