VM Feature Identification: Difference between revisions
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When you control your own hypervisor, you are aware of the features you are using, since you have configured the system and the VMs. However, if you are using a service provider for your hosting or cloud, you need to do some detective work to determine the hypervisor mode and features employed. |
When you control your own hypervisor, you are aware of the features you are using, since you have configured the system and the VMs. However, if you are using a service provider for your hosting or cloud, you need to do some detective work to determine the hypervisor mode and features employed. |
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== MODE DETECTION == |
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From dmesg: |
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<pre> |
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[ 0.000000] Hypervisor detected: Xen HVM |
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</pre> |
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Indicates that the VM is either HVM or PVHVM. |
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== REFERENCES == |
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* A [http://www.brendangregg.com/blog/2014-05-09/xen-feature-detection.html truly great article] by Brendan Gregg |
* A [http://www.brendangregg.com/blog/2014-05-09/xen-feature-detection.html truly great article] by Brendan Gregg |
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Revision as of 16:28, 13 October 2014
When you control your own hypervisor, you are aware of the features you are using, since you have configured the system and the VMs. However, if you are using a service provider for your hosting or cloud, you need to do some detective work to determine the hypervisor mode and features employed.
MODE DETECTION
From dmesg:
[ 0.000000] Hypervisor detected: Xen HVM
Indicates that the VM is either HVM or PVHVM.
REFERENCES
- A truly great article by Brendan Gregg
