I was wondering, if I do not have hardware that natively supports full virtualization...and I choose to use KVM, will my VMs be running in some form of chip emulation (and therefore terribly slow). To date, I've been using Xen and am very comfortable with it. I have some fears that later whenever Xen is dropped - I'll have to consider KVM.
Also, will Xen be carried forward should Xen be dropped from RHEL?
Scot P. Floess wrote:
I was wondering, if I do not have hardware that natively supports full virtualization...and I choose to use KVM,
You cannot use KVM on systems which do not support hardware virtualization
will my VMs be running in some form of chip emulation (and therefore terribly slow). To date, I've been using Xen and am very comfortable with it. I have some fears that later whenever Xen is dropped - I'll have to consider KVM.
Also, will Xen be carried forward should Xen be dropped from RHEL?
xen will be included in RHEL 5 and hence in Centos 5 for the whole life of the distro. However it might (actually I am pretty sure this will happen) no longer get enhancements after a given time (but only bugfixes)
At some time, I thought I had gotten KVM working on one of my hosts - but was under the impression QEMU was used for emulation. It was some time ago...and was really me not knowing what I was doing...and tinkering. I could be completely wrong about this...
On Wed, 17 Mar 2010, Manuel Wolfshant wrote:
Scot P. Floess wrote:
I was wondering, if I do not have hardware that natively supports full virtualization...and I choose to use KVM,
You cannot use KVM on systems which do not support hardware virtualization
will my VMs be running in some form of chip emulation (and therefore terribly slow). To date, I've been using Xen and am very comfortable with it. I have some fears that later whenever Xen is dropped - I'll have to consider KVM.
Also, will Xen be carried forward should Xen be dropped from RHEL?
xen will be included in RHEL 5 and hence in Centos 5 for the whole life of the distro. However it might (actually I am pretty sure this will happen) no longer get enhancements after a given time (but only bugfixes) _______________________________________________ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
On Wed, Mar 17, 2010 at 09:42:34AM -0400, Scot P. Floess wrote:
I was wondering, if I do not have hardware that natively supports full virtualization...and I choose to use KVM, will my VMs be running in some form of chip emulation (and therefore terribly slow). To date, I've been using Xen and am very comfortable with it. I have some fears that later whenever Xen is dropped - I'll have to consider KVM.
Xen is part of RHEL5. RHEL5 will be supported until 2014. So Xen will be supported in RHEL5 until 2014. Redhat has stated this many times.
Also, will Xen be carried forward should Xen be dropped from RHEL?
RHEL6 will run as Xen guest/domU, even if RHEL6 won't have Xen dom0 support. Upstream Xen development is very active, so no worries there either.
-- Pasi
-- Scot P. Floess 27 Lake Royale Louisburg, NC 27549
252-478-8087 (Home) 919-890-8117 (Work)
Chief Architect JPlate http://sourceforge.net/projects/jplate Chief Architect JavaPIM http://sourceforge.net/projects/javapim
Architect Keros http://sourceforge.net/projects/keros _______________________________________________ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
Sure, I understand the support until 2014...was more thinking of moving to 6 and beyond...
On Wed, 17 Mar 2010, Pasi Kärkkäinen wrote:
On Wed, Mar 17, 2010 at 09:42:34AM -0400, Scot P. Floess wrote:
I was wondering, if I do not have hardware that natively supports full virtualization...and I choose to use KVM, will my VMs be running in some form of chip emulation (and therefore terribly slow). To date, I've been using Xen and am very comfortable with it. I have some fears that later whenever Xen is dropped - I'll have to consider KVM.
Xen is part of RHEL5. RHEL5 will be supported until 2014. So Xen will be supported in RHEL5 until 2014. Redhat has stated this many times.
Also, will Xen be carried forward should Xen be dropped from RHEL?
RHEL6 will run as Xen guest/domU, even if RHEL6 won't have Xen dom0 support. Upstream Xen development is very active, so no worries there either.
-- Pasi
-- Scot P. Floess 27 Lake Royale Louisburg, NC 27549
252-478-8087 (Home) 919-890-8117 (Work)
Chief Architect JPlate http://sourceforge.net/projects/jplate Chief Architect JavaPIM http://sourceforge.net/projects/javapim
Architect Keros http://sourceforge.net/projects/keros _______________________________________________ CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
CentOS-virt mailing list CentOS-virt@centos.org http://lists.centos.org/mailman/listinfo/centos-virt
On Wed, Mar 17, 2010 at 12:02 PM, Scot P. Floess sfloess@nc.rr.com wrote:
Sure, I understand the support until 2014...was more thinking of moving to 6 and beyond...
People focus on this a lot but really you might have 1 machine that needs Dom0 support and 50 that need DomU support. The majority of Virtual Machines will need DomU support which will be included indefinitely.
Dom0 support is already becoming a pain but either that will be fixed by a) Xen Dom0 getting into the mainline kernel b) someone create a stripped down Dom0 OS just for the hypervisor. Effectively this is what XCP is doing I think.
Grant McWilliams
Some people, when confronted with a problem, think "I know, I'll use Windows." Now they have two problems.
On Wed, Mar 17, 2010 at 02:35:34PM -0700, Grant McWilliams wrote:
On Wed, Mar 17, 2010 at 12:02 PM, Scot P. Floess <[1]sfloess@nc.rr.com> wrote:
Sure, I understand the support until 2014...was more thinking of moving to 6 and beyond...People focus on this a lot but really you might have 1 machine that needs Dom0 support and 50 that need DomU support. The majority of Virtual Machines will need DomU support which will be included indefinitely.
Yep. I believe RHEL5 Xen will be able to run RHEL6 Xen PV guests.
Dom0 support is already becoming a pain but either that will be fixed by a) Xen Dom0 getting into the mainline kernel b) someone create a stripped down Dom0 OS just for the hypervisor. Effectively this is what XCP is doing I think.
Yeah, XCP is the lately opensourced full CentOS-based distribution that is used in the commercial Citrix XenServer.. It has Xen hypervisor, dom0 kernel, new Xen management toolstack (xapi/xe) etc.
And most importantly it's tested as a whole.
-- Pasi
Grant McWilliams
Some people, when confronted with a problem, think "I know, I'll use Windows." Now they have two problems.
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