ceph/rbd block driver for qemu-kvm
RBD is an block driver for the distributed file system Ceph
(http://ceph.newdream.net/). This driver uses librados (which is part
of the Ceph server) for direct access to the Ceph object store and is
running entirely in userspace (Yehuda also wrote a driver for the
linux kernel, that can be used to access rbd volumes as a block
device).
Signed-off-by: Yehuda Sadeh <[email protected]>
Signed-off-by: Christian Brunner <[email protected]>
Reviewed-by: Stefan Hajnoczi <[email protected]>
Signed-off-by: Kevin Wolf <[email protected]>
diff --git a/configure b/configure
index 2917874..62defc4 100755
--- a/configure
+++ b/configure
@@ -332,6 +332,7 @@
trace_backend="nop"
trace_file="trace"
spice=""
+rbd=""
# OS specific
if check_define __linux__ ; then
@@ -741,6 +742,10 @@
;;
--*dir)
;;
+ --disable-rbd) rbd="no"
+ ;;
+ --enable-rbd) rbd="yes"
+ ;;
*) echo "ERROR: unknown option $opt"; show_help="yes"
;;
esac
@@ -934,6 +939,7 @@
echo " Default:trace-<pid>"
echo " --disable-spice disable spice"
echo " --enable-spice enable spice"
+echo " --enable-rbd enable building the rados block device (rbd)"
echo ""
echo "NOTE: The object files are built at the place where configure is launched"
exit 1
@@ -1746,6 +1752,48 @@
fi
##########################################
+# rbd probe
+if test "$rbd" != "no" ; then
+ cat > $TMPC <<EOF
+#include <stdio.h>
+#include <rados/librados.h>
+int main(void) { rados_initialize(0, NULL); return 0; }
+EOF
+ rbd_libs="-lrados -lcrypto"
+ if compile_prog "" "$rbd_libs" ; then
+ librados_too_old=no
+ cat > $TMPC <<EOF
+#include <stdio.h>
+#include <rados/librados.h>
+#ifndef CEPH_OSD_TMAP_SET
+#error missing CEPH_OSD_TMAP_SET
+#endif
+int main(void) {
+ int (*func)(const rados_pool_t pool, uint64_t *snapid) = rados_selfmanaged_snap_create;
+ rados_initialize(0, NULL);
+ return 0;
+}
+EOF
+ if compile_prog "" "$rbd_libs" ; then
+ rbd=yes
+ libs_tools="$rbd_libs $libs_tools"
+ libs_softmmu="$rbd_libs $libs_softmmu"
+ else
+ rbd=no
+ librados_too_old=yes
+ fi
+ else
+ if test "$rbd" = "yes" ; then
+ feature_not_found "rados block device"
+ fi
+ rbd=no
+ fi
+ if test "$librados_too_old" = "yes" ; then
+ echo "-> Your librados version is too old - upgrade needed to have rbd support"
+ fi
+fi
+
+##########################################
# linux-aio probe
if test "$linux_aio" != "no" ; then
@@ -2354,6 +2402,7 @@
echo "Trace backend $trace_backend"
echo "Trace output file $trace_file-<pid>"
echo "spice support $spice"
+echo "rbd support $rbd"
if test $sdl_too_old = "yes"; then
echo "-> Your SDL version is too old - please upgrade to have SDL support"
@@ -2627,6 +2676,9 @@
if test "$zero_malloc" = "yes" ; then
echo "CONFIG_ZERO_MALLOC=y" >> $config_host_mak
fi
+if test "$rbd" = "yes" ; then
+ echo "CONFIG_RBD=y" >> $config_host_mak
+fi
# USB host support
case "$usb" in
