> On my debian squeeze, I think I got the same issue.
> Starting a server with 4 vcpus (vcpus=4 in config file), I can "vcpu-set" 2
> vcpus for this server successfully, but I can't rollback to 4 vcpu.
> Xend Log file says :
> [2010-11-24 13:01:23 19542] INFO (XendDomainInfo:1987) Set VCPU count on
> domain testvm to 2
> [2010-11-24 13:01:48 19542] INFO (XendDomainInfo:1987) Set VCPU count on
> domain testvm to 4
> But cpus are offline in domU/paused in dom0.
> I also got the "XENBUS: Unable to read cpu state" error.
> 2010/11/24 Kristoffer Egefelt <dr.fersken@xxxxxxxxx
>> Hi list,
>> I'm trying out Debian Squeeze with XEN 4.0.1 on a Dell m610 blade.
>> Everything is installed from the squeeze repository, except the dom0
>> kernel, which would not boot on the m610, so I compiled 126.96.36.199 from
>> jeremy 11/11-2010.
>> Everything looks good, except these messages, which I've not been able
>> to explain:
>> [ 16.651781] XENBUS: Unable to read cpu state
>> [ 16.651968] XENBUS: Unable to read cpu state
>> [ 16.652156] XENBUS: Unable to read cpu state
>> Removing cpu's work, but when I try to add cpu's:
>> root@node0106:/# xm vcpu-set 15 15
>> [2010-11-24 12:22:49 26321] INFO (XendDomainInfo:1987) Set VCPU count
>> on domain squeezetest01 to 15
>> but cpu's are still in paused mode:
>> Name ID VCPU CPU State Time(s) CPU
>> squeezetest01 15 0 12 -b- 18.9 any cpu
>> squeezetest01 15 1 4 -b- 0.6 any cpu
>> squeezetest01 15 2 6 -b- 0.9 any cpu
>> squeezetest01 15 3 15 -b- 0.8 any cpu
>> squeezetest01 15 4 8 -b- 0.8 any cpu
>> squeezetest01 15 5 - --p 0.1 any cpu
>> squeezetest01 15 6 - --p 0.1 any cpu
>> squeezetest01 15 7 - --p 0.1 any cpu
>> This also shows on the VM:
>> root@squeezetest01:~# cat /sys/devices/system/cpu/offline
>> On the VM I've tried both the stock squeeze kernel
>> linux-image-2.6.32-5-xen-amd64 and jeremys 188.8.131.52 - both have this
>> Any ideas are greatly appreciated! ;-)
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