I am using XenServer 7.0. So we have 8 server in pool and using NFS shared storage for the Pool. We have couple of VMs running on it, but there are few VMs with 64GB of DB VMs which usually has higher work load because of DB. ( OS Type - CentOS )
So what we have observed so far, when we try to perform VM live host migration from one host to another, such DB VMs always get hang and migration doesn't complete. So we have checked the performance of the VM, When we start the migration CPU spike happens and it reaches almost on 100% and VM gets hang. So as per my understanding when we intiate the VM live migration, it tries to preserve the state meaning it temporary holds all the write happening on the VMs in order to migrate the resources from one host to another, So it's possible to have the the IOwait on the VM and cause the spike of CPU ?
does this case can be possible of VM hang during the live migration ? Can any expert provide more clarification on this ?
Question
Vivek kumar1709157130
Hello Folks,
I am using XenServer 7.0. So we have 8 server in pool and using NFS shared storage for the Pool. We have couple of VMs running on it, but there are few VMs with 64GB of DB VMs which usually has higher work load because of DB. ( OS Type - CentOS )
So what we have observed so far, when we try to perform VM live host migration from one host to another, such DB VMs always get hang and migration doesn't complete. So we have checked the performance of the VM, When we start the migration CPU spike happens and it reaches almost on 100% and VM gets hang. So as per my understanding when we intiate the VM live migration, it tries to preserve the state meaning it temporary holds all the write happening on the VMs in order to migrate the resources from one host to another, So it's possible to have the the IOwait on the VM and cause the spike of CPU ?
does this case can be possible of VM hang during the live migration ? Can any expert provide more clarification on this ?
Regards
Vivek Kumar
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