Re: [CentOS-virt] VM migration problems

2020-04-25 Thread isdtor
Chris Wik writes:
> 
> I may have run into this issue before too, but in my case the VMs ran fine 
> with only 1 vcpu so I booted them that way and left them like that. It was 
> just a few small legacy VMs and I didn't spend any more time on it.
> 
> Did you try booting with only 1 vcpu?

Yes, and it works.

Good to know but I was really looking for some sort of technical explanation.

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Re: [CentOS-virt] VM migration problems

2020-04-24 Thread Chris Wik

I may have run into this issue before too, but in my case the VMs ran fine with 
only 1 vcpu so I booted them that way and left them like that. It was just a 
few small legacy VMs and I didn't spend any more time on it.



Did you try booting with only 1 vcpu?


Chris

--
 Chris Wik
 Anu Internet Services
 www.anu.net | www.cwik.ch



 From:   isdtor  
 To:
 Sent:   24/04/2020 11:53 AM 
 Subject:   [CentOS-virt] VM migration problems 

I have migrated KVM VMs from a CentOS 6 to a CentOS 7 host. All work fine 
post-migration, CentOS 3 (don't ask ...), CentOS 6, CentOS 7, Windows. But the 
CentOS 5 VMs failed. At some point during the boot process, they became 
unpingable and also inaccessible. 
 
I have correlated this to the start of the irqbalance service and was wondering 
if it is generally considered best practice to turn it off. The VMs in question 
all have at least 2 vcpus, and the C5 VMs are the odd ones out. 
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Re: [CentOS-virt] VM migration problems

2020-04-24 Thread isdtor
Helmut Drodofsky writes:
> migrated or moved? I move vm from C6 to C7 without any problem, C5
> guests too.
> 
> - copy disk files (rsync or scp)
> - create in virtual manager
> - change HWADDR in nic
> 
> start guest
 
Moved. Just like you, minus the MAC change.

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Re: [CentOS-virt] VM migration problems

2020-04-24 Thread Helmut Drodofsky
migrated or moved? I move vm from C6 to C7 without any problem, C5
guests too.

- copy disk files (rsync or scp)
- create in virtual manager
- change HWADDR in nic

start guest

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Helmut Drodofsky

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Am 24.04.2020 um 11:53 schrieb isdtor:
> I have migrated KVM VMs from a CentOS 6 to a CentOS 7 host. All work fine 
> post-migration, CentOS 3 (don't ask ...), CentOS 6, CentOS 7, Windows. But 
> the CentOS 5 VMs failed. At some point during the boot process, they became 
> unpingable and also inaccessible.
>
> I have correlated this to the start of the irqbalance service and was 
> wondering if it is generally considered best practice to turn it off. The VMs 
> in question all have at least 2 vcpus, and the C5 VMs are the odd ones out.
>
> ___
> CentOS-virt mailing list
> CentOS-virt@centos.org
> https://lists.centos.org/mailman/listinfo/centos-virt
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[CentOS-virt] VM migration problems

2020-04-24 Thread isdtor
I have migrated KVM VMs from a CentOS 6 to a CentOS 7 host. All work fine 
post-migration, CentOS 3 (don't ask ...), CentOS 6, CentOS 7, Windows. But the 
CentOS 5 VMs failed. At some point during the boot process, they became 
unpingable and also inaccessible.

I have correlated this to the start of the irqbalance service and was wondering 
if it is generally considered best practice to turn it off. The VMs in question 
all have at least 2 vcpus, and the C5 VMs are the odd ones out.

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