[BUG] vm create failed with image_cache exist

[elvizlai]

问题描述/What happened:

通过 Shared LVM Storage With Lvmlockd 共享 iscsi，镜像缓存报错，虚拟机无法创建。
https://www.cloudpods.org/docs/guides/onpremise/storage/blockstorage/lvmlockd

{
    "__reason__": {
        "reason": {
            "__reason__": {
                "reason": {
                    "image_id": "7907e662-67d2-41e1-8568-33b146cb5375",
                    "reason": {
                        "__reason__": "AcquireImage: lvm image cache acquire: LvCreate failed   Logical Volume \"imagecache_7907e662-67d2-41e1-8568-33b146cb5375\" already exists in volume group \"cluster-vg\"\n: exit status 5",
                        "__stage__": "OnImageCacheComplete",
                        "__status__": "error"
                    }
                },
                "stage": "OnImageCacheComplete"
            },
            "__stage__": "OnIsoPrepareComplete",
            "__status__": "error",
            "__task_name__": "StorageCacheImageTask"
        },
        "stage": "OnIsoPrepareComplete"
    },
    "__stage__": "OnCdromPrepared",
    "__status__": "error",
    "__task_name__": "GuestInsertIsoTask"
}

环境/Environment:

• OS (e.g. cat /etc/os-release):
• Kernel (e.g. uname -a):
• Host: (e.g. dmidecode | egrep -i 'manufacturer|product' |sort -u)
• Service Version (e.g. kubectl exec -n onecloud $(kubectl get pods -n onecloud | grep climc | awk '{print $1}') -- climc version-list):