qemu: monitor: Add 'nodename' argument for 'block_resize'

Allow referring to individual node name to resize.
Signed-off-by: NPeter Krempa <pkrempa@redhat.com>
Reviewed-by: NJán Tomko <jtomko@redhat.com>

src/qemu/qemu_driver.c

@@ -10989,7 +10989,7 @@ qemuDomainBlockResize(virDomainPtr dom,
         goto endjob;
 
     qemuDomainObjEnterMonitor(driver, vm);
-    if (qemuMonitorBlockResize(priv->mon, device, size) < 0) {
+    if (qemuMonitorBlockResize(priv->mon, device, NULL, size) < 0) {
         ignore_value(qemuDomainObjExitMonitor(driver, vm));
         goto endjob;
     }

src/qemu/qemu_monitor.c

@@ -2312,13 +2312,21 @@ qemuMonitorBlockStatsUpdateCapacity(qemuMonitorPtr mon,
 int
 qemuMonitorBlockResize(qemuMonitorPtr mon,
                        const char *device,
+                       const char *nodename,
                        unsigned long long size)
 {
-    VIR_DEBUG("device=%s size=%llu", device, size);
+    VIR_DEBUG("device=%s nodename=%s size=%llu",
+              NULLSTR(device), NULLSTR(nodename), size);
 
     QEMU_CHECK_MONITOR(mon);
 
-    return qemuMonitorJSONBlockResize(mon, device, size);
+    if ((!device && !nodename) || (device && nodename)) {
+        virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
+                       _("exactly one of 'device' and 'nodename' need to be specified"));
+        return -1;
+    }
+
+    return qemuMonitorJSONBlockResize(mon, device, nodename, size);
 }
 
 

src/qemu/qemu_monitor.h

@@ -596,7 +596,8 @@ int qemuMonitorBlockStatsUpdateCapacity(qemuMonitorPtr mon,
     ATTRIBUTE_NONNULL(2);
 
 int qemuMonitorBlockResize(qemuMonitorPtr mon,
-                           const char *dev_name,
+                           const char *device,
+                           const char *nodename,
                            unsigned long long size);
 int qemuMonitorSetVNCPassword(qemuMonitorPtr mon,
                               const char *password);

src/qemu/qemu_monitor_json.c

@@ -2542,6 +2542,7 @@ qemuMonitorJSONBlockStatsUpdateCapacity(qemuMonitorPtr mon,
 
 int qemuMonitorJSONBlockResize(qemuMonitorPtr mon,
                                const char *device,
+                               const char *nodename,
                                unsigned long long size)
 {
     int ret = -1;
@@ -2549,7 +2550,8 @@ int qemuMonitorJSONBlockResize(qemuMonitorPtr mon,
     virJSONValuePtr reply = NULL;
 
     cmd = qemuMonitorJSONMakeCommand("block_resize",
-                                     "s:device", device,
+                                     "S:device", device,
+                                     "S:node-name", nodename,
                                      "U:size", size,
                                      NULL);
     if (!cmd)

src/qemu/qemu_monitor_json.h

@@ -94,7 +94,8 @@ int qemuMonitorJSONBlockStatsUpdateCapacity(qemuMonitorPtr mon,
                                             virHashTablePtr stats,
                                             bool backingChain);
 int qemuMonitorJSONBlockResize(qemuMonitorPtr mon,
-                               const char *devce,
+                               const char *device,
+                               const char *nodename,
                                unsigned long long size);
 
 int qemuMonitorJSONSetVNCPassword(qemuMonitorPtr mon,

tests/qemumonitorjsontest.c

@@ -1320,7 +1320,7 @@ cleanup: \
 }
 
 GEN_TEST_FUNC(qemuMonitorJSONSetLink, "vnet0", VIR_DOMAIN_NET_INTERFACE_LINK_STATE_DOWN)
-GEN_TEST_FUNC(qemuMonitorJSONBlockResize, "vda", 123456)
+GEN_TEST_FUNC(qemuMonitorJSONBlockResize, "vda", "asdf", 123456)
 GEN_TEST_FUNC(qemuMonitorJSONSetVNCPassword, "secret_password")
 GEN_TEST_FUNC(qemuMonitorJSONSetPassword, "spice", "secret_password", "disconnect")
 GEN_TEST_FUNC(qemuMonitorJSONExpirePassword, "spice", "123456")