iothreads

diff --git a/virtinst/cli.py b/virtinst/cli.py
index 5accba8f..5389053a 100644
--- a/virtinst/cli.py
+++ b/virtinst/cli.py
@@ -771,6 +771,10 @@ def add_guest_xml_options(geng):
     geng.add_argument("--cputune", action="append",
         help=_("Tune CPU parameters for the domain process."))

+    ParserIOThreads.register()
+    geng.add_argument("--iothreads", action="append",
+        help=_("Tune IOThreads parameters for the domain process."))
+
     ParserNumatune.register()
     geng.add_argument("--numatune", action="append",
         help=_("Tune NUMA policy for the domain process."))
@@ -2010,6 +2014,23 @@ class ParserCputune(VirtCLIParser):
                     find_inst_cb=cls.vcpu_find_inst_cb)


+#######################
+# --iothreads parsing #
+#######################
+
+class ParserIOThreads(VirtCLIParser):
+    cli_arg_name = "iothreads"
+    guest_propname = "iothreads"
+    remove_first = "iothreads"
+    stub_none = False
+
+    @classmethod
+    def _init_class(cls, **kwargs):
+        VirtCLIParser._init_class(**kwargs)
+        # Options for IOThreads config
+        cls.add_arg("iothreads", "iothreads")
+
+
 ###################
 # --vcpus parsing #
 ###################
diff --git a/virtinst/domain/__init__.py b/virtinst/domain/__init__.py
index f942ee59..7d86ebf6 100644
--- a/virtinst/domain/__init__.py
+++ b/virtinst/domain/__init__.py
@@ -6,6 +6,7 @@ from .blkiotune import DomainBlkiotune
 from .clock import DomainClock
 from .cpu import DomainCpu
 from .cputune import DomainCputune
+from .iothreads import DomainIOThreads
 from .features import DomainFeatures
 from .idmap import DomainIdmap
 from .metadata import DomainMetadata
diff --git a/virtinst/domain/iothreads.py b/virtinst/domain/iothreads.py
new file mode 100644
index 00000000..d5170643
--- /dev/null
+++ b/virtinst/domain/iothreads.py
@@ -0,0 +1,15 @@
+#
+# Copyright 2019 Red Hat, Inc.
+#
+# This work is licensed under the GNU GPLv2 or later.
+# See the COPYING file in the top-level directory.
+
+from ..xmlbuilder import XMLBuilder, XMLProperty, XMLChildProperty
+
+
+class DomainIOThreads(XMLBuilder):
+
+    XML_NAME = "iothreads"
+    _XML_PROP_ORDER = ["iothreads"]
+
+    iothreads = XMLProperty("./iothreads", is_int=True)
diff --git a/virtinst/guest.py b/virtinst/guest.py
index 5479d4e9..aaa001ab 100644
--- a/virtinst/guest.py
+++ b/virtinst/guest.py
@@ -232,6 +232,7 @@ class Guest(XMLBuilder):
     clock = XMLChildProperty(DomainClock, is_single=True)
     cpu = XMLChildProperty(DomainCpu, is_single=True)
     cputune = XMLChildProperty(DomainCputune, is_single=True)
+    iothreads = XMLChildProperty(DomainIOThreads, is_single=True)
     numatune = XMLChildProperty(DomainNumatune, is_single=True)
     pm = XMLChildProperty(DomainPm, is_single=True)
     blkiotune = XMLChildProperty(DomainBlkiotune, is_single=True)
diff --git a/tests/cli-test-xml/compare/virt-install-singleton-config-2.xml b/tests/cli-test-xml/compare/virt-install-singleton-config-2.xml
index cd22f5ae..abdf8c21 100644
--- a/tests/cli-test-xml/compare/virt-install-singleton-config-2.xml
+++ b/tests/cli-test-xml/compare/virt-install-singleton-config-2.xml
@@ -209,6 +209,9 @@
   <cputune>
     <vcpupin vcpu="0" cpuset="0-3"/>
   </cputune>
+  <iothreads>
+    <iothreads>4</iothreads>
+  </iothreads>
 </domain>
 <domain type="kvm">
   <name>foobar</name>
@@ -423,4 +426,7 @@
   <cputune>
     <vcpupin vcpu="0" cpuset="0-3"/>
   </cputune>
+  <iothreads>
+    <iothreads>4</iothreads>
+  </iothreads>
 </domain>
diff --git a/tests/clitest.py b/tests/clitest.py
index ceb1eebd..a5762e50 100644
--- a/tests/clitest.py
+++ b/tests/clitest.py
@@ -485,6 +485,7 @@ numa.cell1.distances.sibling0.id=0,numa.cell1.distances.sibling0.value=21,\
 cell1.distances.sibling1.id=1,cell1.distances.sibling1.value=10,\
 cache.mode=emulate,cache.level=3
 --cputune vcpupin0.vcpu=0,vcpupin0.cpuset=0-3
+--iothreads iothreads=4
 --metadata title=my-title,description=my-description,uuid=00000000-1111-2222-3333-444444444444,genid=e9392370-2917-565e-692b-d057f46512d6
 --boot cdrom,fd,hd,network,menu=off,loader=/foo/bar,emulator=/new/emu,bootloader=/new/bootld,rebootTimeout=3,initargs="foo=bar baz=woo"
 --idmap uid_start=0,uid_target=1000,uid_count=10,gid_start=0,gid_target=1000,gid_count=10