8:32 a.m.
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Hey all,
I have noticed that using the virtio serial driver in Windows 7 and 2008R2 =
guests stalls the guests with 100% load on guest CPU. This happens both on =
guests that have been active for a while without the driver, and then you t=
ry loading it, or with installing new guests and loading this particular dr=
iver in the windows installer. I have downloaded the virtio-win-0.1.30.iso =
from linux-kvm ftp. Has anyone else noticed this in oVirt-3.1? I haven=B4t =
been able to test this outside of oVirt, directly with KVM, so I don=B4t kn=
ow if it=B4s an oVirt or KVM specific issue, I=B4m just letting everyone kn=
ow this has happened, and if ovirt-engine is supposed to use this serial in=
terface to "talk" with the guest back and forth; that=B4s going to hard to =
do if it=B4s stalled:)
Med V=E4nliga H=E4lsningar
---------------------------------------------------------------------------=
----
Karli Sj=F6berg
Swedish University of Agricultural Sciences
Box 7079 (Visiting Address Kron=E5sv=E4gen 8)
S-750 07 Uppsala, Sweden
Phone: +46-(0)18-67 15 66
karli.sjoberg@slu.se<mailto:karli.sjoberg@adm.slu.se>
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<html>
<head>
<meta http-equiv=3D"Content-Type" content=3D"text/html;
charset=3Diso-8859-=
1">
</head>
<body style=3D"word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-lin=
e-break: after-white-space; ">
Hey all,
<div><br>
</div>
<div>I have noticed that using the virtio serial driver in Windows 7 and 20=
08R2 guests stalls the guests with 100% load on guest CPU. This happens bot=
h on guests that have been active for a while without the driver, and then =
you try loading it, or with installing
new guests and loading this particular driver in the windows installer. I =
have downloaded the virtio-win-0.1.30.iso from linux-kvm ftp. Has anyone el=
se noticed this in oVirt-3.1? I haven=B4t been able to test this outside of=
oVirt, directly with KVM, so I don=B4t
know if it=B4s an oVirt or KVM specific issue, I=B4m just letting everyone=
know this has happened, and if ovirt-engine is supposed to use this serial=
interface to "talk" with the guest back and forth; that=B4s goin=
g to hard to do if it=B4s stalled:) <br>
<div><span class=3D"Apple-style-span" style=3D"border-collapse:
separate; c=
olor: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-varian=
t: normal; font-weight: normal; letter-spacing: normal; line-height: normal=
; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: n=
one; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-hori=
zontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-dec=
orations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stro=
ke-width: 0px; font-size: medium; ">
<div><br class=3D"Apple-interchange-newline">
<br>
</div>
<div>Med V=E4nliga H=E4lsningar<br>
---------------------------------------------------------------------------=
----<br>
Karli Sj=F6berg<br>
Swedish University of Agricultural Sciences<br>
Box 7079 (Visiting Address Kron=E5sv=E4gen 8)<br>
S-750 07 Uppsala, Sweden<br>
Phone: +46-(0)18-67 15 66</div>
<div><a
href=3D"mailto:karli.sjoberg@adm.slu.se">karli.sjoberg@slu.se</a></=
div>
</span></div>
<br>
</div>
</body>
</html>
--_000_687C49F8D246408587877C310DEFB7B0sluse_--
8:34 a.m.
I've seen this happen on Windows VM's on plain KVM on Fedora as well.
Regards,
Maxim Burgerhout
maxim(a)wzzrd.com
----------------
EB11 5E56 E648 9D99 E8EF 05FB C513 6FD4 1302 B48A
On Wed, Sep 19, 2012 at 2:32 PM, Karli Sjöberg <Karli.Sjoberg(a)slu.se> wrote:
Hey all,
I have noticed that using the virtio serial driver in Windows 7 and
2008R2 guests stalls the guests with 100% load on guest CPU. This happens
both on guests that have been active for a while without the driver, and
then you try loading it, or with installing new guests and loading this
particular driver in the windows installer. I have downloaded the
virtio-win-0.1.30.iso from linux-kvm ftp. Has anyone else noticed this in
oVirt-3.1? I haven´t been able to test this outside of oVirt, directly with
KVM, so I don´t know if it´s an oVirt or KVM specific issue, I´m just
letting everyone know this has happened, and if ovirt-engine is supposed to
use this serial interface to "talk" with the guest back and forth; that´s
going to hard to do if it´s stalled:)
Med Vänliga Hälsningar
-------------------------------------------------------------------------------
Karli Sjöberg
Swedish University of Agricultural Sciences
Box 7079 (Visiting Address Kronåsvägen 8)
S-750 07 Uppsala, Sweden
Phone: +46-(0)18-67 15 66
karli.sjoberg(a)slu.se <karli.sjoberg(a)adm.slu.se>
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Karli Sjöberg -
Maxim Burgerhout