VM Feature Identification: Difference between revisions
From Xen
Jump to navigationJump to search
Rcpavlicek (talk | contribs) No edit summary |
Rcpavlicek (talk | contribs) No edit summary |
||
| Line 5: | Line 5: | ||
From dmesg: |
From dmesg: |
||
If your VM is either HVM or PVHVM, look for: |
|||
<pre> |
<pre> |
||
[ 0.000000] Hypervisor detected: Xen HVM |
[ 0.000000] Hypervisor detected: Xen HVM |
||
</pre> |
</pre> |
||
If your VM is PV or PVH, look for: |
|||
<pre> |
|||
[ 0.000000] Booting paravirtualized kernel on Xen |
|||
</pre> |
|||
== REFERENCES == |
== REFERENCES == |
||
Revision as of 16:32, 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:
If your VM is either HVM or PVHVM, look for:
[ 0.000000] Hypervisor detected: Xen HVM
If your VM is PV or PVH, look for:
[ 0.000000] Booting paravirtualized kernel on Xen
REFERENCES
- A truly great article by Brendan Gregg
