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[libvirt] [PATCH] qemu: blockCopy: Allow shallow block copy into a raw image



The documentation states that for shallow block copy the image has to
have the same guest visible content as backing file of the current
image. This condition can be achieved also with a raw file (or a qcow
without a backing file) so remove the condition that would disallow it.

(This patch additionally fixes crash described in
 https://bugzilla.redhat.com/show_bug.cgi?id=1215569 since it removes
 the code)
---
 src/qemu/qemu_driver.c | 10 ----------
 1 file changed, 10 deletions(-)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 70bf7aa..f979d33 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -16815,16 +16815,6 @@ qemuDomainBlockCopyCommon(virDomainObjPtr vm,
     if (qemuDomainDetermineDiskChain(driver, vm, disk, false, true) < 0)
         goto endjob;

-    if ((flags & VIR_DOMAIN_BLOCK_COPY_SHALLOW) &&
-        mirror->format == VIR_STORAGE_FILE_RAW &&
-        disk->src->backingStore->path) {
-        virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
-                       _("disk '%s' has backing file, so raw shallow copy "
-                         "is not possible"),
-                       disk->dst);
-        goto endjob;
-    }
-
     /* Prepare the destination file.  */
     /* XXX Allow non-file mirror destinations */
     if (!virStorageSourceIsLocalStorage(mirror)) {
-- 
2.3.5


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