<div dir="ltr">2014/1/26 Itamar Heim <span dir="ltr"><<a href="mailto:iheim@redhat.com" target="_blank">iheim@redhat.com</a>></span><br><div class="gmail_extra"><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex">
<div class=""><div class="h5">On 01/25/2014 04:23 AM, Kewei Yu wrote:<br>
</div></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left-width:1px;border-left-color:rgb(204,204,204);border-left-style:solid;padding-left:1ex"><div><div class="h5">
Hi all:<br>
There is a "machine type" in cluster, It will decide which machine<br>
of Qemu will be used, When we add the first host into cluster, a default<br>
machine type is shown. We can correct the DB's value of the engine to<br>
set the machine type.<br>
I just want to know how dose cluster choice the default machine? It<br>
is decided by VDSM? Qemu? or It is only fixed value in engine's DB?<br>
<br>
Regard<br>
Kewei<br>
<br>
<br></div></div>
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</blockquote>
<br>
basically, for fedora its 'pc', which may have some live migration issues between different versions in the same cluster.<br>
for .el6, its 'rhel63/rhel64/rhel65/etc.', which is a stable definition of emulation mode for the cluster (i.e., even a .el7 host should live migrate to .el6 if we specify its emulation mode as rhel65, etc.)<br>
<br>
engine defines per cluster level the expected emulation mode.<br>
vdsm reports from libvirt from qemu, so engine can check the host is a match.<br>
if the first host in the cluster is fedora, it will be set to 'pc', if its .el6, it will be set to the 'rhelxx' option.<br></blockquote><div>Thanks for your answer, It is helpful to me. </div><div><br></div>
<br class=""><br clear="all"><div><div dir="ltr"><font size="3"><span style="color:rgb(0,0,0);font-family:'lucida Grande',Verdana;font-size:12px;line-height:18px"></span></font><div>Regard<br></div><div>Kewei</div>
</div></div><br><div> </div></div><br></div></div>