[PATCH 4/7] qemu: Use virStorageSourceIsEmpty in qemuDomainBlockCommit

[Peter Krempa <pkrempa@xxxxxxxxxx>]

The block commit API checked 'disk->src->path' to see whether there
is a reasonable disk source to be committed. As the top image can be
e.g. backed by NBD the check is not good enough. Replace it by
virStorageSourceIsEmpty.

Signed-off-by: Peter Krempa <pkrempa@xxxxxxxxxx>
---
 src/qemu/qemu_driver.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 482f915b67..042efae49f 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -17949,7 +17949,7 @@ qemuDomainBlockCommit(virDomainPtr dom,
     if (!(device = qemuAliasDiskDriveFromDisk(disk)))
         goto endjob;

-    if (!disk->src->path) {
+    if (virStorageSourceIsEmpty(disk->src)) {
         virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
                        _("disk %s has no source file to be committed"),
                        disk->dst);
-- 
2.21.0

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