Is the CentOS 7 PV kernel available?
I installed latest CentOS 7 & I found out that it is a HVM guest.
So, if we wanted to have CentOS PV guest for CentOS 7, is there any specific steps to follow?
or the same kernel will work as both PV & HVM?
4 thoughts on - CentOS 7 PV Kernel
The CentOS 7 stock kernel is Xen PV enabled.
Peter
Thanks for the reply.
How to know that the CentOS 7 kerenel is whether PV or HVM?
When I searched about it, I found the following link, where the kernel type us determined from the 2 following commands
1. uname -r
2. lsmod | grep xen If both have “*xen*”, then it is PV, if lsmod returns something but not in kernel name then its PV-HVM, else its HVM
From what I understand, the first command never have “Xen” extension to the CentOS 7 kernel. So, can I conclude that there are only 2 types of kernels in case of CentOS
7 onwards, i.e PV & HVM.
you’ve asked this a bunch of times and have been told over and over, IT
SUPPORTS BOTH.
if you run c7 in a HVM, it will run as a HVM system. if you run it in a paravirtualized environment, it will run as a PV system. its the HYPERVISOR you’re running it under that determines what mode its running in.
and your link? thats talking about CentOS 5.2, which is rather old, like 2008.
Am 20.08.2015 um 06:50 schrieb Venkateswara Rao Dokku:
Try it yourself.
Excecute
grep XEN /boot/config-$(uname -r)
you will see that CONFIG_XEN and CONFIG_XEN_PVHVM is enabled.
4 thoughts on - CentOS 7 PV Kernel
The CentOS 7 stock kernel is Xen PV enabled.
Peter
Thanks for the reply.
How to know that the CentOS 7 kerenel is whether PV or HVM?
When I searched about it, I found the following link, where the kernel type us determined from the 2 following commands
1. uname -r
2. lsmod | grep xen If both have “*xen*”, then it is PV, if lsmod returns something but not in kernel name then its PV-HVM, else its HVM
From what I understand, the first command never have “Xen” extension to the CentOS 7 kernel. So, can I conclude that there are only 2 types of kernels in case of CentOS
7 onwards, i.e PV & HVM.
http://serverfault.com/questions/511923/determine-which-guest-is-running-on-xen-hvm-or-pv-guest
you’ve asked this a bunch of times and have been told over and over, IT
SUPPORTS BOTH.
if you run c7 in a HVM, it will run as a HVM system. if you run it in a paravirtualized environment, it will run as a PV system. its the HYPERVISOR you’re running it under that determines what mode its running in.
and your link? thats talking about CentOS 5.2, which is rather old, like 2008.
Am 20.08.2015 um 06:50 schrieb Venkateswara Rao Dokku:
Try it yourself.
Excecute
grep XEN /boot/config-$(uname -r)
you will see that CONFIG_XEN and CONFIG_XEN_PVHVM is enabled.
regrads Ulf