Storage pool absent (#5841)

* simple null check

Co-authored-by: Daan Hoogland <dahn@onecht.net>
Co-authored-by: Rohit Yadav <rohit.yadav@shapeblue.com>
Co-authored-by: Daniel Augusto Veronezi Salvador <38945620+GutoVeronezi@users.noreply.github.com>

Author: 4 people

plugins/hypervisors/kvm/src/main/java/com/cloud/hypervisor/kvm/resource/wrapper/LibvirtGetStorageStatsCommandWrapper.java

@@ -37,6 +37,9 @@ public Answer execute(final GetStorageStatsCommand command, final LibvirtComputi
         try {
             final KVMStoragePoolManager storagePoolMgr = libvirtComputingResource.getStoragePoolMgr();
             final KVMStoragePool sp = storagePoolMgr.getStoragePool(command.getPooltype(), command.getStorageId(), true);
+            if (sp == null) {
+                return new GetStorageStatsAnswer(command, "no storage pool to get statistics from");
+            }
             return new GetStorageStatsAnswer(command, sp.getCapacity(), sp.getUsed());
         } catch (final CloudRuntimeException e) {
             return new GetStorageStatsAnswer(command, e.toString());