diff --git a/virttest/libvirt_xml/devices/filesystem.py b/virttest/libvirt_xml/devices/filesystem.py
index 28c0eb26ce..8143a18dd6 100644
--- a/virttest/libvirt_xml/devices/filesystem.py
+++ b/virttest/libvirt_xml/devices/filesystem.py
@@ -41,9 +41,11 @@ class Binary(base.base.LibvirtXMLBase):
         <binary path='/usr/libexec/virtiofsd' xattr='on'>
             <cache mode='always'/>
             <lock posix='on' flock='on'/>
+            <thread_pool size='16'/>
         </binary>
         """
-        __slots__ = ('path', 'xattr', 'cache_mode', 'lock_posix', 'flock')
+        __slots__ = ('path', 'xattr', 'cache_mode', 'lock_posix',
+                     'flock', 'thread_pool_size')
 
         def __init__(self, virsh_instance=base.base.virsh):
             accessors.XMLAttribute('path', self,
@@ -66,5 +68,9 @@ def __init__(self, virsh_instance=base.base.virsh):
                                    parent_xpath='/',
                                    tag_name='lock',
                                    attribute='flock')
+            accessors.XMLAttribute('thread_pool_size', self,
+                                   parent_xpath='/',
+                                   tag_name='thread_pool',
+                                   attribute='size')
             super(self.__class__, self).__init__(virsh_instance=virsh_instance)
             self.xml = '<binary/>'
diff --git a/virttest/utils_test/libvirt_device_utils.py b/virttest/utils_test/libvirt_device_utils.py
index 65cfb1d57c..b22dd78162 100644
--- a/virttest/utils_test/libvirt_device_utils.py
+++ b/virttest/utils_test/libvirt_device_utils.py
@@ -32,10 +32,13 @@ def create_fs_xml(fsdev_dict, launched_mode='auto'):
         xattr = binary_dict.get('xattr', 'on')
         lock_posix = binary_dict.get('lock_posix', 'on')
         flock = binary_dict.get('flock', 'on')
+        thread_pool_size = binary_dict.get('thread_pool_size')
         if cache_mode != "auto":
             binary_xml.cache_mode = cache_mode
         if xattr != "":
             binary_xml.xattr = xattr
+        if thread_pool_size:
+            binary_xml.thread_pool_size = thread_pool_size
         binary_xml.path = path
         binary_xml.lock_posix = lock_posix
         binary_xml.flock = flock