[PATCH] libvirt qemu add rbd mirror dest in qemuDomainBlockCopyCommon

[dinglimin at cmss.chinamobile.com]

From: dinglimin <dinglimin at cmss.chinamobile.com>

The BlockCopy command is designed to copy a chain of disk backup images to dest.
For RBD external destination, before the modification, only the '--XML' parameter is supported by 'blockdev-mirror'.
After the modification, the '--dest' parameter(--dest 'rbd:xxx/xxx:auth_supported=none:mon_host=xxx.xxx.xxx.xxx')can be used.

Signed-off-by: dinglimin <dinglimin at cmss.chinamobile.com>
---
 src/qemu/qemu_driver.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index 760d30a..db15898 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -14963,12 +14963,27 @@ qemuDomainBlockCopyCommon(virDomainObj *vm,
     virStorageSource *mirrorBacking = NULL;
     g_autoptr(GHashTable) blockNamedNodeData = NULL;
     int rc = 0;
+    const char *p = NULL;
 
     /* Preliminaries: find the disk we are editing, sanity checks */
     virCheckFlags(VIR_DOMAIN_BLOCK_COPY_SHALLOW |
                   VIR_DOMAIN_BLOCK_COPY_REUSE_EXT |
                   VIR_DOMAIN_BLOCK_COPY_TRANSIENT_JOB, -1);
 
+    /* if mirror->path contains 'rbd:' prefix, set rbd attributes */
+    if (STRPREFIX(mirror->path, "rbd:")) {
+        mirror->format = VIR_STORAGE_FILE_RAW;
+        mirror->protocol = VIR_STORAGE_NET_PROTOCOL_RBD;
+        mirror->type = VIR_STORAGE_TYPE_NETWORK;
+
+        p = g_strdup(mirror->path);
+        if (virStorageSourceParseRBDColonString(p, mirror) < 0) {
+          virReportError(VIR_ERR_INVALID_ARG, "%s",
+                         _("RBD path conversion failed"));
+          return -1;
+        }
+    }
+  
     if (virStorageSourceIsRelative(mirror)) {
         virReportError(VIR_ERR_INVALID_ARG, "%s",
                        _("absolute path must be used as block copy target"));
-- 
1.8.3.1