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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Unable to add more than 2 volumes or networks to a vm deployed from a UEFI image","articleBody":"### problem\n\nUnable to add more than 2 volume or network to a vm deployed from a UEFI image \n\n### versions\n\nACS 4.20.1\n\n### The steps to reproduce the bug\n\n1. Register a UEFI image Template \n\nhttps://cloud-images.ubuntu.com/noble/current/noble-server-cloudimg-amd64.img\n\n\n\n2. Deploy  the vm by enabling UEFI secure mode in advanced settings\n\n\u003cimg width=\"596\" height=\"268\" alt=\"Image\" src=\"https://github.com/user-attachments/assets/bb1449a9-74c7-4ce8-a5bf-e94d7446ab88\" /\u003e\n\n\n3. Once the vm is in running state , attach multiple volumes , Exception observed \n\nLogs\n\n```\n2025-07-16 04:28:28,947 DEBUG [kvm.storage.KVMStorageProcessor] (AgentRequest-Handler-3:[]) (logid:) Attaching device: \u003cdisk  device='disk' type='file'\u003e\n\u003cdriver name='qemu' type='qcow2' cache='none' /\u003e\n\u003csource file='/mnt/7b881182-e6d4-3e65-bf10-662bf0530b84/c6ef61d1-300f-442a-86e5-e31f482b64ab'/\u003e\n\u003ctarget dev='vdc' bus='virtio'/\u003e\n\u003cserial\u003ec6ef61d1300f442a86e5\u003c/serial\u003e\n\u003c/disk\u003e\n\n2025-07-16 04:28:28,953 WARN  [kvm.storage.KVMStorageProcessor] (AgentRequest-Handler-3:[]) (logid:) Failed to attach device to i-2-653-VM: internal error: No more available PCI slots\n2025-07-16 04:28:28,953 DEBUG [kvm.storage.KVMStorageProcessor] (AgentRequest-Handler-3:[]) (logid:) Failed to attach volume [id: 394, uuid: c6ef61d1-300f-442a-86e5-e31f482b64ab, name: test2, path: c6ef61d1-300f-442a-86e5-e31f482b64ab], due to org.libvirt.LibvirtException: internal error: No more available PCI slots\n\n```\n\n\n4. Try to attach multiple networks, Exception observed \n\n```\n\n2025-07-16 04:36:02,019 DEBUG [kvm.resource.BridgeVifDriver] (AgentRequest-Handler-1:[]) (logid:) Successfully executed process [2045246] for command [/usr/share/cloudstack-common/scripts/vm/network/vnet/modifyvlan.sh -v 2144 -p eth1 -b breth1-2144 -o add ].\n2025-07-16 04:36:02,021 WARN  [resource.wrapper.LibvirtPlugNicCommandWrapper] (AgentRequest-Handler-1:[]) (logid:)  Plug Nic failed due to org.libvirt.LibvirtException: internal error: No more available PCI slots org.libvirt.LibvirtException: internal error: No more available PCI slots\n        at org.libvirt.ErrorHandler.processError(Unknown Source)\n        at org.libvirt.ErrorHandler.processError(Unknown Source)\n\n```\n\nWorkaround\n\nChange the  following settings on the vm after stopping \n\nnicAdapter to e1000 or rtl813\n\nrootDiskController to scsi or sata\n\nhttps://prnt.sc/9wSS5uX0tVYX\n\n\n\n\n\n\n\n### What to do about it?\n\nIf the Template is a UEFI enabled , Cloudstack should check if the template is UEFI enabled or not and populated the necessary settings for root disk and nic adapter \n\n\nyum install libguestfs-tools\n\nvirt-inspector --format=raw -a noble-server-cloudimg-amd64.img 2\u003e/dev/null | grep -i '\u003cuefi\u003etrue\u003c/uefi\u003e'\n\nvirt-inspector -a AlmaLinux-8-GenericCloud-UEFI-latest.x86_64.qcow2 2\u003e/dev/null | grep -i '\u003cuefi\u003etrue\u003c/uefi\u003e'","author":{"url":"https://github.com/kiranchavala","@type":"Person","name":"kiranchavala"},"datePublished":"2025-07-16T06:07:11.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":6},"url":"https://github.com/11212/cloudstack/issues/11212"}