Hi all, I''m trying to find documentation to describe what specific CPU flags, models, families requirements are needed for live migrations to be "supported." I have found mailing list archives which tend to say things like "should" work or "may" work, but nothing that says "is supported." or "is certified." Basically what I''m wondering is that if I have (2) quad-core cpu''s on one server and (2) quad-core cpu''s on another server -- both have the same family and stepping and exact same flags. The only difference is that the model is different. Is that something that the xen hypervisor typically will support when it comes to live migration? Thanks, Joe ==========================Joseph R. Hoot Lead System Programmer/Analyst (w) 716-878-4832 (c) 716-759-HOOT joe.hoot@itec.suny.edu GPG KEY: 7145F633 ========================== _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
I don''t believe there is, from the Xen standpoint. The required CPU features depend on what the VM needs. As an example, in my XCP pool, I run AMD Opteron 248, 250, 275, and 2214 with nothing but PV Linux guests and migrating works just dandy. Vern Burke SwiftWater Telecom http://www.swiftwatertel.com Xen Cloud Control System http://xencloudcontrol.com On 10/20/2010 11:38 AM, Hoot, Joseph wrote:> Hi all, > > I''m trying to find documentation to describe what specific CPU flags, models, families requirements are needed for live migrations to be "supported." I have found mailing list archives which tend to say things like "should" work or "may" work, but nothing that says "is supported." or "is certified." > > Basically what I''m wondering is that if I have (2) quad-core cpu''s on one server and (2) quad-core cpu''s on another server -- both have the same family and stepping and exact same flags. The only difference is that the model is different. Is that something that the xen hypervisor typically will support when it comes to live migration? > > > Thanks, > Joe > > ==========================> Joseph R. Hoot > Lead System Programmer/Analyst > (w) 716-878-4832 > (c) 716-759-HOOT > joe.hoot@itec.suny.edu > GPG KEY: 7145F633 > ==========================> > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users >_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
On 10-10-20 11:38 AM, Hoot, Joseph wrote:> Hi all, > > I''m trying to find documentation to describe what specific CPU flags, models, families requirements are needed for live migrations to be "supported." I have found mailing list archives which tend to say things like "should" work or "may" work, but nothing that says "is supported." or "is certified." > > Basically what I''m wondering is that if I have (2) quad-core cpu''s on one server and (2) quad-core cpu''s on another server -- both have the same family and stepping and exact same flags. The only difference is that the model is different. Is that something that the xen hypervisor typically will support when it comes to live migration? > > > Thanks, > JoeAny modern processor from AMD and most modern processors from Intel support HVM. If you have an Intel CPU, you need to look for the vmx flag. Likewise, with AMD CPUs, you need to look for the svm flag. With these, you''re set. If you look on wikipedia at a given CPU, you will see what it supports. Digimer _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi Hoot Just cat /proc/cpuinfo to find pae and vmx flags for Intel CPU, if you use the AMD CPU please to find pae and svm flags, However, the most modern processor all support it. Xudong 2010-10-21 xudongxen 发件人： Hoot, Joseph 发送时间： 2010-10-20 23:39:42 收件人： xen-users@lists.xensource.com 抄送： 主题： [Xen-users] CPU Prerequisites for Live Migrations Hi all, I'm trying to find documentation to describe what specific CPU flags, models, families requirements are needed for live migrations to be "supported." I have found mailing list archives which tend to say things like "should" work or "may" work, but nothing that says "is supported." or "is certified." Basically what I'm wondering is that if I have (2) quad-core cpu's on one server and (2) quad-core cpu's on another server -- both have the same family and stepping and exact same flags. The only difference is that the model is different. Is that something that the xen hypervisor typically will support when it comes to live migration? Thanks, Joe ==========================Joseph R. Hoot Lead System Programmer/Analyst (w) 716-878-4832 (c) 716-759-HOOT joe.hoot@itec.suny.edu GPG KEY: 7145F633 ==========================_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users