Workaround the qemu on Solaris to create bootable volumes.
The patch is Solaris-specific and not suitable for upstream.

--- cinder-8.0.0/cinder/image/image_utils.py.orig	2016-11-03 11:18:00.796414519 +0000
+++ cinder-8.0.0/cinder/image/image_utils.py	2016-11-04 14:43:09.735267859 +0000
@@ -27,7 +27,9 @@ we should look at maybe pushing this up
 import contextlib
 import math
 import os
+import platform
 import re
+import tarfile
 import tempfile
 
 from oslo_concurrency import processutils
@@ -55,8 +57,40 @@ CONF = cfg.CONF
 CONF.register_opts(image_helper_opts)
 
 
+class QemuEmulation(object):
+    def __init__(self, path):
+        if tarfile.is_tarfile(path):
+            # Solaris Unified Archive
+            cmd = ('/usr/bin/env', 'LC_ALL=C', '/usr/sbin/archiveadm', 'info', '-vp', path)
+            try:
+                out, _err = utils.execute(*cmd)
+
+                # the UAR image size is in the 4th line, 8th column
+                data = out.splitlines()[3].split('|')[7]
+
+                # cut off the trailing 'b' character
+                self.virtual_size = data[:-1]
+                self.disk_size = data[:-1]
+            except processutils.ProcessExecutionError:
+                # the image is a tarball but not a Unifed Archive
+                self.virtual_size = os.path.getsize(path)
+                self.disk_size = os.path.getsize(path)
+        else:
+            # simply set the size of the image on disk
+            self.virtual_size = os.path.getsize(path)
+            self.disk_size = os.path.getsize(path)
+
+        # fill in the rest of attributes
+        self.backing_file = None
+        self.file_format = 'raw'
+        self.cluster_size = None
+        self.snapshots = []
+        self.encrypted = False
+
 def qemu_img_info(path, run_as_root=True):
     """Return an object containing the parsed output from qemu-img info."""
+    if platform.system() == 'SunOS':
+        return QemuEmulation(path)
     cmd = ('env', 'LC_ALL=C', 'qemu-img', 'info', path)
     if os.name == 'nt':
         cmd = cmd[2:]
@@ -275,6 +309,10 @@ def fetch_to_volume_format(context, imag
                              "can be used if qemu-img is not installed."),
                     image_id=image_id)
 
+        if platform.system() == 'SunOS':
+            # No QEMU support on Solaris now.
+            qemu_img = False
+
         tmp_images = TemporaryImages.for_image_service(image_service)
         tmp_image = tmp_images.get(context, image_id)
         if tmp_image: