Subject: cloner: Handle --nonsparse for qcow2 images (bz 1675743)
From: Cole Robinson crobinso@redhat.com Mon Mar 4 13:20:51 2019 -0500
Date: Mon Mar 4 14:04:34 2019 -0500:
Git: 4f66c423f7833e270b61536d53a0772ce1242abc

https://bugzilla.redhat.com/show_bug.cgi?id=1675743

diff --git a/tests/clone-xml/cross-pool-disks-out.xml b/tests/clone-xml/cross-pool-disks-out.xml
index 260f321c..6093e240 100644
--- a/tests/clone-xml/cross-pool-disks-out.xml
+++ b/tests/clone-xml/cross-pool-disks-out.xml
@@ -1,7 +1,7 @@
 <volume>
   <name>new1.img</name>
   <capacity>1000000</capacity>
-  <allocation>50000</allocation>
+  <allocation>1000000</allocation>
   <target>
     <format type="qcow2"/>
     <features>
@@ -12,7 +12,7 @@
 <volume>
   <name>new2.img</name>
   <capacity>1000000</capacity>
-  <allocation>50000</allocation>
+  <allocation>1000000</allocation>
   <target>
     <format type="qcow2"/>
     <features>
diff --git a/virtinst/cloner.py b/virtinst/cloner.py
index ba89a26f..b29027e3 100644
--- a/virtinst/cloner.py
+++ b/virtinst/cloner.py
@@ -330,6 +330,8 @@ class Cloner(object):
                 vol_install.input_vol = orig_disk.get_vol_object()
                 vol_install.sync_input_vol(only_format=True)
 
+            if self.clone_sparse:
+                vol_install.allocation = vol_install.capacity
             vol_install.reflink = self.reflink
             clone_disk.set_vol_install(vol_install)
         elif orig_disk.path:
diff --git a/virtinst/storage.py b/virtinst/storage.py
index 3249c454..2e92c5d6 100644
--- a/virtinst/storage.py
+++ b/virtinst/storage.py
@@ -744,6 +744,10 @@ class StorageVolume(_StorageObject):
             self.conn.check_support(
                 self.conn.SUPPORT_POOL_METADATA_PREALLOC, self.pool)):
             createflags |= libvirt.VIR_STORAGE_VOL_CREATE_PREALLOC_METADATA
+            if self.capacity == self.allocation:
+                # For cloning, this flag will make libvirt+qemu-img preallocate
+                # the new disk image
+                cloneflags |= libvirt.VIR_STORAGE_VOL_CREATE_PREALLOC_METADATA
 
         if self.reflink:
             cloneflags |= getattr(libvirt,