5:37 p.m.
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Hi everyone,
While I was figuring out how to implement the support for IBM POWER in the =
oVirt engine, I stumbled into an use case that can cause some confusion.
During the creation of a cluster, you can choose an empty processor name if=
you do not select the option "Enable Virt Service". As a result, it is pos=
sible to create a virtual machine inside a cluster without any attached hos=
ts. So, if you create a VM this way, it is impossible to decide in which ar=
chitecture it will run (if it is either x86-64 or POWER). Without knowing t=
his, the engine cannot show the proper list of device models (for networks,=
disks, displays, ...) in the frontend.
It raises some questions:
- Why oVirt allows the creation of clusters without a processor name?
- What exactly is the "Virt Service"? Why are the processor related checks=
only executed if this service is enabled?
- How can this use case be solved? Should the engine always enforce a prope=
r CPU name in all clusters?
- If the engine enforces every cluster to have a CPU name, what should be d=
one in the default Cluster?
Thanks,
Vitor
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class=3D"WordSection1" <p
class=3D"MsoNormal"><span lang=3D"EN-US">Hi
everyone,<o:p></o:p></span><=
/p <p class=3D"MsoNormal"><span
lang=3D"EN-US"><o:p> </o:p></span></p <p class=3D"MsoNormal"><span
lang=3D"EN-US">While I was figuring out how to=
implement the support for IBM POWER in the oVirt engine, I stumbled into a=
n use case that can cause some confusion.<o:p></o:p></span></p <p class=3D"MsoNormal"><span
lang=3D"EN-US">During the creation of a cluste=
r, you can choose an empty processor name if you do not select the option &=
quot;Enable Virt Service". As a result, it is possible to create a vir=
tual machine inside a cluster without any attached
hosts. So, if you create a VM this way, it is impossible to decide in whic=
h architecture it will run (if it is either x86-64 or POWER). Without knowi=
ng this, the engine cannot show the proper list of device models (for netwo=
rks, disks, displays, ...) in the
frontend.<o:p></o:p></span></p <p
class=3D"MsoNormal"><span
lang=3D"EN-US"><o:p> </o:p></span></p <p class=3D"MsoNormal"><span
lang=3D"EN-US">It raises some questions:<o:p><=
/o:p></span></p <p
class=3D"MsoNormal"><span
lang=3D"EN-US"><o:p> </o:p></span></p <p class=3D"MsoNormal"><span
lang=3D"EN-US">- Why oVirt allows the creation=
of clusters without a processor name?<o:p></o:p></span></p <p class=3D"MsoNormal"><span
lang=3D"EN-US">- What exactly is the "Vir=
t Service"? Why are the processor related checks only executed i=
f this service is enabled?<o:p></o:p></span></p <p class=3D"MsoNormal"><span
lang=3D"EN-US">- How can this use case be solv=
ed? Should the engine always enforce a proper CPU name in all clusters?<o:p=
></o:p></span></p <p
class=3D"MsoNormal"><span lang=3D"EN-US">- If the engine
enforces every =
cluster to have a CPU name, what should be done in the default Cluster?<o:p=
></o:p></span></p <p
class=3D"MsoNormal"><span
lang=3D"EN-US"><o:p> </o:p></span></p <p class=3D"MsoNormal"><span
lang=3D"EN-US">Thanks,<o:p></o:p></span></p <p class=3D"MsoNormal"><span
lang=3D"EN-US">Vitor<o:p></o:p></span></p </div
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