[Libguestfs] [PATCH] lib: libvirt: Pass copyonread flag through to the libvirt XML.
From: "Richard W.M. Jones" <rjones(a)redhat.com>
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.
---
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 948350b..72f86ba 100644
--- a/lib/launch-libvirt.c
+++ b/lib/launch-libvirt.c
@@ -1593,7 +1593,8 @@ 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;
}
--
1.8.3.1