Hi kiran,
I have collected the agent logs, the issue is happening when we add more
than one or two volumes/networks for running vm with uefi enabled.
WARN [kvm.storage.KVMStorageProcessor] (agentRequest-Handler-3:null)
(logid:f74cb22b) Failed to attach device to i-1-2976-VM: internal error: No
more available PCI slots
DEBUG [kvm.storage.KVMStorageProcessor] (agentRequest-Handler-3:null)
(logid:f74cb22b) Failed to attach volume:
8b3ee875-81ac-48b7-8f6f-b557f9e790e4, due to
org.libvirt.LibvirtException: internal error: No more available PCI slots
at org.libvirt.ErrorHandler.processError(Unknown Source)
at org.libvirt.ErrorHandler.processError(Unknown Source)
at org.libvirt.Domain.attachDevice(Unknown Source)
at
com.cloud.hypervisor.kvm.storage.KVMStorageProcessor.attachOrDetachDevice(KVMStorageProcessor.java:1248)
at
com.cloud.hypervisor.kvm.storage.KVMStorageProcessor.attachOrDetachDisk(KVMStorageProcessor.java:1522)
at
com.cloud.hypervisor.kvm.storage.KVMStorageProcessor.attachOrDetachDisk(KVMStorageProcessor.java:1350)
at
com.cloud.hypervisor.kvm.storage.KVMStorageProcessor.attachVolume(KVMStorageProcessor.java:1553)
at
com.cloud.storage.resource.StorageSubsystemCommandHandlerBase.execute(StorageSubsystemCommandHandlerBase.java:168)
at
com.cloud.storage.resource.StorageSubsystemCommandHandlerBase.handleStorageCommands(StorageSubsystemCommandHandlerBase.java:70)
Can you please let me know is this libvirt issue?
Thanks,
Sai
On Tue, Jul 8, 2025, 10:30 PM sai <sai.kr...@gmail.com> wrote:
> Hi kiran,
>
> Yeah I just got no more available pci slot exception in agent logs.I will
> try to collect the logs and upload.
>
> Thanks & Regards,
> Sai
>
> On Tue, Jul 8, 2025, 8:28 PM Kiran Chavala <kiran.chav...@shapeblue.com>
> wrote:
>
>>
>>
>> Hi Sai
>>
>> Did you find any exception in the kvm agent logs?
>>
>> Could you please log a issue upstream with the logs(management server and
>> kvm agent logs) to troubleshoot further
>>
>> https://github.com/apache/cloudstack/issues
>>
>> Regards
>> Kiran
>>
>>
>>
>>
>>
>>
>> From: sai <sai.kr...@gmail.com>
>> Date: Wednesday, 9 July 2025 at 8:28 AM
>> To: users@cloudstack.apache.org <users@cloudstack.apache.org>
>> Subject: Re: Regarding PCI slots
>> Hi Rohit,
>>
>> Thanks for responding. But I am getting issue after adding three volumes
>> or
>> three networks and also this issue is seen while adding devices to uefi
>> vms
>> in kvm environment.Do you suggest anything for this.
>>
>> Regards,
>> Sai
>>
>>
>>
>>
>> On Tue, Jul 8, 2025, 7:55 PM Kiran Chavala <kiran.chav...@shapeblue.com>
>> wrote:
>>
>> > Hi Sai
>> >
>> > Cloudstack entirely depends on kvm/libvirt limitations
>> >
>> > KVM generally provides 32 PCI slots, which are used to connect several
>> > devices.
>> >
>> >
>> >
>> https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/5/html/virtualization/sect-virtualization-virtualization_limitations-kvm_limitations
>> >
>> > https://github.com/apache/cloudstack/pull/8654
>> >
>> >
>> > Regards
>> > Kiran
>> >
>> >
>> >
>> >
>> >
>> >
>> >
>> > From: sai <sai.kr...@gmail.com>
>> > Date: Tuesday, 8 July 2025 at 11:24 PM
>> > To: users@cloudstack.apache.org <users@cloudstack.apache.org>
>> > Subject: Regarding PCI slots
>> > Hi All,
>> >
>> > I have query on adding network and volume to vm, while adding those i am
>> > getting no more available pci slots error from libvirt. When I see
>> > discussions in community the only option is to stop and add resources
>> and
>> > restart the vm. Is that only option we have or anything from code needs
>> to
>> > be fixed to add while vm is in running state. Else is there any PR fixed
>> > for this.
>> > Thanks in advance.
>> >
>> >
>> > Regards,
>> > Sai
>> >
>>
>
