fix create vol from snap and attach

Author: Pearl1594

plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/storage/KVMStorageProcessor.java

@@ -1285,22 +1285,6 @@ private String computeMd5Hash(String input) {
         }
     }
 
-    /**
-     * Extract VG name from CLVM disk path.
-     * Path format: /dev/vgname/volumeuuid
-     * Returns: vgname
-     */
-    private String extractVgNameFromDiskPath(String diskPath) {
-        if (diskPath == null || diskPath.isEmpty()) {
-            return null;
-        }
-        String[] pathParts = diskPath.split("/");
-        if (pathParts.length >= 3) {
-            return pathParts[2];  // /dev/vgname/volumeuuid -> vgname
-        }
-        return null;
-    }
-
     protected synchronized void attachOrDetachISO(final Connect conn, final String vmName, String isoPath, final boolean isAttach, Map<String, String> params, DataStoreTO store) throws
             LibvirtException, InternalErrorException {
         DiskDef iso = new DiskDef();

plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/storage/LibvirtStorageAdaptor.java

@@ -1227,7 +1227,7 @@ private KVMPhysicalDisk createPhysicalDiskByLibVirt(String name, KVMStoragePool
      * Activates a CLVM volume in shared mode so all hosts in the cluster can access it.
      * This is necessary after volume creation since libvirt creates LVs with exclusive activation by default.
      *
-     * @param volumePath The full path to the LV (e.g., /dev/vgname/volume-uuid)
+     * @param volumePath The full path to the LV (e.g., /dev/vgname/volume-path)
      */
     private void activateClvmVolumeInSharedMode(String volumePath) {
         try {

server/src/main/java/com/cloud/storage/VolumeApiServiceImpl.java

@@ -3055,8 +3055,8 @@ private boolean transferClvmVolumeLock(VolumeInfo volume, Long sourceHostId, Lon
             vgName = vgName.substring(1);
         }
 
-        // Full LV path: /dev/vgname/volume-uuid
-        String lvPath = String.format("/dev/%s/%s", vgName, volumeUuid);
+        // Full LV path: /dev/vgname/volume-path
+        String lvPath = String.format("/dev/%s/%s", vgName, volume.getPath());
 
         try {
             // Step 1: Deactivate on source host (if different from dest)