diff --git a/SOURCES/0043-lib-libvirt-Pass-copyonread-flag-through-to-the-libv.patch b/SOURCES/0043-lib-libvirt-Pass-copyonread-flag-through-to-the-libv.patch
new file mode 100644
index 0000000..0227bd6
--- /dev/null
+++ b/SOURCES/0043-lib-libvirt-Pass-copyonread-flag-through-to-the-libv.patch
@@ -0,0 +1,34 @@
+From 1f182ed648b7cf9d4f9f9fdceeb5be69cd2be4ae Mon Sep 17 00:00:00 2001
+From: "Richard W.M. Jones" <rjones@redhat.com>
+Date: Thu, 29 Jun 2017 23:59:15 +0100
+Subject: [PATCH] lib: libvirt: Pass copyonread flag through to the libvirt XML
+ (RHBZ#1466563).
+
+We were dropping the add_drive copyonread flag when using the libvirt
+backend.  This resulted in significant performance degradation (2x-3x
+slower) when running virt-v2v against VMware servers.
+
+Thanks: Kun Wei.
+
+(cherry picked from commit d96209ef07fef3db0e411648348f1b1dcf384e70)
+---
+ lib/launch-libvirt.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/lib/launch-libvirt.c b/lib/launch-libvirt.c
+index 0c2879d..144937b 100644
+--- a/lib/launch-libvirt.c
++++ b/lib/launch-libvirt.c
+@@ -1547,7 +1547,8 @@ construct_libvirt_xml_disk (guestfs_h *g,
+ 
+       if (construct_libvirt_xml_disk_driver_qemu (g, data, drv, xo, format,
+                                                   drv->cachemode ? : "writeback",
+-                                                  drv->discard, false)
++                                                  drv->discard,
++                                                  drv->copyonread)
+           == -1)
+         return -1;
+     }
+-- 
+2.9.4
+
diff --git a/SPECS/libguestfs.spec b/SPECS/libguestfs.spec
index 3cb330f..0a7fa89 100644
--- a/SPECS/libguestfs.spec
+++ b/SPECS/libguestfs.spec
@@ -14,7 +14,7 @@ Summary:       Access and modify virtual machine disk images
 Name:          libguestfs
 Epoch:         1
 Version:       1.36.3
-Release:       6%{?dist}
+Release:       6%{?dist}.2
 License:       LGPLv2+
 
 # Source and patches.
@@ -75,6 +75,7 @@ Patch0039:     0039-v2v-windows-Install-both-legacy-and-modern-virtio-ke.patch
 Patch0040:     0040-v2v-o-rhv-Add-Windows-2016-Server-type-in-OVF-output.patch
 Patch0041:     0041-daemon-lvm-Pass-yes-option-to-force-pvresize-RHBZ-14.patch
 Patch0042:     0042-resize-make-sure-the-input-disk-is-read-only.patch
+Patch0043:     0043-lib-libvirt-Pass-copyonread-flag-through-to-the-libv.patch
 
 # Use git for patch management.
 BuildRequires: git
@@ -959,6 +960,14 @@ move_to rsync           zz-packages-rsync
 move_to xfsprogs        zz-packages-xfs
 popd
 
+# If there is a bogus dependency on kernel-rt, rename it to 'kernel'
+# instead.  This happens when the version of kernel-rt in brew is
+# greater than the version of kernel (kernel-rt 'Provides: kernel').
+pushd $RPM_BUILD_ROOT%{_libdir}/guestfs/supermin.d
+sed 's/^kernel-rt$/kernel/' < packages > packages-t
+mv packages-t packages
+popd
+
 # Guestfish colour prompts.
 mkdir -p $RPM_BUILD_ROOT%{_sysconfdir}/profile.d
 install -m 0644 %{SOURCE5} $RPM_BUILD_ROOT%{_sysconfdir}/profile.d
@@ -1282,6 +1291,14 @@ install -m 0644 utils/boot-benchmark/boot-benchmark.1 $RPM_BUILD_ROOT%{_mandir}/
 
 
 %changelog
+* Mon Jul 17 2017 Pino Toscano <ptoscano@redhat.com> - 1:1.36.3-6.el7_4.2
+- Make sure kernel-rt is never used as Requires.
+  resolves: rhbz#1471829
+
+* Wed Jul 12 2017 Pino Toscano <ptoscano@redhat.com> - 1:1.36.3-6.el7_4.1
+- Enable the copyonread flag when running the appliance using libvirt.
+  resolves: rhbz#1469902
+
 * Thu Jun 22 2017 Pino Toscano <ptoscano@redhat.com> - 1:1.36.3-6
 - Rebase to libguestfs 1.36 in RHEL 7.4.
   resolves: rhbz#1359086