[libvirt] [PATCH 3/8] qemu: hotplug: Use new source when preparing/translating for media change

[Peter Krempa]

Some internal helpers use only a virDomainDiskDef to do their job. If we
want to change source for the disk we need to update it to the new
source in the disk definition for those to work correctly.

Signed-off-by: Peter Krempa <pkrempa at redhat.com>
---
 src/qemu/qemu_hotplug.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index 86afda636e..3043b3257b 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -730,9 +730,12 @@ qemuDomainChangeEjectableMedia(virQEMUDriverPtr driver,
                                bool force)
 {
     qemuDomainObjPrivatePtr priv = vm->privateData;
+    virStorageSourcePtr oldsrc = disk->src;
     int ret = -1;
     int rc;

+    disk->src = newsrc;
+
     if (qemuHotplugPrepareDiskAccess(driver, vm, disk, newsrc, false) < 0)
         goto cleanup;

@@ -744,7 +747,7 @@ qemuDomainChangeEjectableMedia(virQEMUDriverPtr driver,
     else
         rc = qemuDomainChangeMediaLegacy(driver, vm, disk, newsrc, force);

-    virDomainAuditDisk(vm, disk->src, newsrc, "update", rc >= 0);
+    virDomainAuditDisk(vm, oldsrc, newsrc, "update", rc >= 0);

     if (rc < 0) {
         ignore_value(qemuHotplugPrepareDiskAccess(driver, vm, disk, newsrc, true));
@@ -755,7 +758,8 @@ qemuDomainChangeEjectableMedia(virQEMUDriverPtr driver,
     ignore_value(qemuRemoveSharedDisk(driver, disk, vm->def->name));
     ignore_value(qemuHotplugPrepareDiskAccess(driver, vm, disk, NULL, true));

-    virStorageSourceFree(disk->src);
+    virStorageSourceFree(oldsrc);
+    oldsrc = NULL;
     VIR_STEAL_PTR(disk->src, newsrc);

     ignore_value(qemuHotplugRemoveManagedPR(driver, vm, QEMU_ASYNC_JOB_NONE));
@@ -763,6 +767,9 @@ qemuDomainChangeEjectableMedia(virQEMUDriverPtr driver,
     ret = 0;

  cleanup:
+    if (oldsrc)
+        disk->src = oldsrc;
+
     return ret;
 }

-- 
2.17.1