Re: [fedora-virt] 3.13 - Nested KVM (vmx) totally broken?
by Richard W.M. Jones
On Fri, Mar 14, 2014 at 04:39:48PM +0400, Vasiliy Tolstov wrote:
> 2014-03-14 16:16 GMT+04:00 Richard W.M. Jones <rjones(a)redhat.com>:
> > You can set the VM <domain type="qemu">. Of course it'll run quite
> > slowly.
> >
> >> is that possible to debug this issue ? How can i help?
> >
> > Complete logs from the guest.
> > Any messages from qemu or the host.
> > & put all of that into a full bug report.
>
>
> Where i can find submission form for bug report? (I'm using exherbo
> linux, but it does not have like debian or sles personal patches and
> using only upstream)
I suspect this is going to be a kernel bug, in which case:
https://bugzilla.kernel.org/
For libvirt bugs it would be:
https://bugzilla.redhat.com/enter_bug.cgi?component=libvirt&product=Virtu...
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
virt-top is 'top' for virtual machines. Tiny program with many
powerful monitoring features, net stats, disk stats, logging, etc.
http://people.redhat.com/~rjones/virt-top
10 years
Installing Windows 7 in a KVM?
by Tom Horsley
I've got a copy of Windows 7 on order I want to install in
a KVM on Fedora 20.
I cannot believe the amount of conflicting information
I find when googling about how best to do the install :-).
Is there a recent, reasonably accurate guide anywhere?
Things like the best way to get the virtio drivers
into the system at install time?
Are the drivers at:
http://alt.fedoraproject.org/pub/alt/virtio-win/latest/images/virtio-win-...
the ones I want?
Besides network and disk, what the heck are all the other drivers
on that ISO, and why do I want them?
What other guest software is needed (various agents,
and wot-not)?
The highest performance cache mode for the virtual
disk?
The best way to define the mouse?
10 years
Re: [fedora-virt] 3.13 - Nested KVM (vmx) totally broken?
by Richard W.M. Jones
On Fri, Mar 14, 2014 at 04:11:13PM +0400, Vasiliy Tolstov wrote:
> 2014-03-14 15:58 GMT+04:00 Richard W.M. Jones <rjones(a)redhat.com>:
> > It could be there is another, less frequent, bug in nested KVM.
> > I'm assuming this is on Intel hardware?
> >
> > From the libguestfs point of view what you can do is to force TCG:
> >
> > export LIBGUESTFS_BACKEND_SETTINGS=force_tcg
> >
> > Unfortunately this only has an effect in libguestfs >= 1.25.24. We're
> > going to have the new version in Fedora 20 real soon -- probably
> > before the end of this month. Or you can compile the Rawhide version
> > on F20.
>
>
> Thanks for answer. I'm not using libguestfs. I'm try tun vm inside vm
> via libvirt.
You can set the VM <domain type="qemu">. Of course it'll run quite
slowly.
> is that possible to debug this issue ? How can i help?
Complete logs from the guest.
Any messages from qemu or the host.
& put all of that into a full bug report.
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
libguestfs lets you edit virtual machines. Supports shell scripting,
bindings from many languages. http://libguestfs.org
10 years
Can't add cdrom during install
by Tom Horsley
If I check the "customize before install" box when using
virt-manager to install a new virtual machine, then I
try to add hardware to define an extra cdrom drive for
a driver disk I'll need during install, virt-manager
gives me some error about variable 'disk' not defined
(that's what I remember, anyway, apply adequate grains
of salt :-).
Is this a known problem? Should I submit a bugzilla?
If I let the machine go ahead and start the install,
kill it, then edit the machine definition, I can
install the 2nd cd at that point.
10 years
Re: [fedora-virt] 3.13 - Nested KVM (vmx) totally broken?
by Richard W.M. Jones
On Fri, Mar 14, 2014 at 03:52:03PM +0400, Vasiliy Tolstov wrote:
> If i use 3.13.6 kernel that have alredy this patch, but sometimes i
> get kernel panic, what can i do?
> P.S. I'm using nested virt, fault from L2
It could be there is another, less frequent, bug in nested KVM.
I'm assuming this is on Intel hardware?
>From the libguestfs point of view what you can do is to force TCG:
export LIBGUESTFS_BACKEND_SETTINGS=force_tcg
Unfortunately this only has an effect in libguestfs >= 1.25.24. We're
going to have the new version in Fedora 20 real soon -- probably
before the end of this month. Or you can compile the Rawhide version
on F20.
Rich.
--
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
virt-df lists disk usage of guests without needing to install any
software inside the virtual machine. Supports Linux and Windows.
http://people.redhat.com/~rjones/virt-df/
10 years
[Xen-devel] Xen 4.4 Released!
by Pasi Kärkkäinen
----- Forwarded message from George Dunlap <George.Dunlap(a)eu.citrix.com> -----
From: George Dunlap <George.Dunlap(a)eu.citrix.com>
To: "xen-devel(a)lists.xen.org" <xen-devel(a)lists.xen.org>
Date: Mon, 10 Mar 2014 12:36:12 +0000
Subject: [Xen-devel] Xen 4.4 Released!
The Xen Project team is pleased to announce the official release of
Xen 4.4.
The result of nearly 8 months of development, new features include:
* Solid libvirt support in libxl.
* FIFO scalable event channel implementation
* Experimental support for PVH mode for guests
* Driver domains: block scripts, qdisk, non-Linux driver domains
* Improved support for SPICE
* Improved kexec
* Stable ABI for arm32 and arm64
* Simpler to add a new ARM platform
* As always, a number of stability, performance, and security
enhancements "under the hood".
Detailed release notes, including a more extensive feature list:
http://wiki.xenproject.org/wiki/Xen_4.4_Release_Notes
To download tarballs:
http://www.xenproject.org/downloads/xen-archives/supported-xen-44-series/...
Or the git source repository (tag 'RELEASE-4.4.0'):
http://xenbits.xen.org/gitweb/?p=xen.git
And the announcement on the Xen blog:
http://blog.xen.org/index.php/2014/03/10/xen-4-4-released/
Thanks to the many people who have contributed to this release!
Regards,
The Xen Project Team
_______________________________________________
Xen-devel mailing list
Xen-devel(a)lists.xen.org
http://lists.xen.org/xen-devel
----- End forwarded message -----
10 years
Scanner & USB Passthrough
by Jorge Fábregas
Hi,
I plan to buy the Fujitsu ScanSnap iX500 document scanner (that only
works with Win/Mac/IOS/Android) and plan to use it along with my Windows
XP VM. I've never used "USB passthrough" before and wondered if there
might be any show-stopper along the way? Has anyone used a scanner in
this manner before?
I just did a test :
- plugged my iPod via USB
- Fedora 20 automatically mounted it...
- I manually unmounted it...
- modified my VM with virt-manager (Add New Hardward) to add the usb
device (iPOD in this case)
- started the VM and installed iTunes
- iTunes found the iPod and I could see all my tracks.
So far, it seems to work perfectly fine. Howerver, the iPOD in the end
it's just a "USB mass storage device" (the scanner isn't).
I'll appreciate any feedback!
Thanks,
Jorge
10 years
processor topology?
by Tom Horsley
Continuing my efforts to prepare for a Windows 7 KVM
install, I've found that Win 7 (Home) won't talk multi-socket
CPUs, it only wants multi-core CPUs, but experimenting
with the Processor settings in virt-manager, if I tell
it to copy my host cpu configuration, I wind up with
a single processor inside the virtual machine.
If I disable that, and explicitly set the topology
to 1 socket, 4 cores (which is what I have), I then
get qemu errors about the host not having the required
features rtm hle x2apic.
So am I basically doomed to have a single CPU windows 7
virtual machine?
(My host is a Intel(R) Core(TM) i7-4770K which is, I believe,
a Haswell chip).
The Haswells are pretty darn new - what chips have the
rtm, hle, and x2apic features qemu wants?
10 years
3.13 - Nested KVM (vmx) totally broken?
by Ian Pilcher
Is this a known problem? I just tried using nested vmx for the first
time since upgrading my system from F19 (3.12.?? at the time) to F20,
and I cannot start any L2 guests. The L2 guest appears to hang almost
immediately after starting, consuming 100% of one of the L1 guest's
VCPUs.
If I reboot with kernel-3.12.10-300.fc20.x86_64, the problem does not
occur.
Any known workaround? (Other than using 3.12.10?)
Thanks!
--
========================================================================
Ian Pilcher arequipeno(a)gmail.com
Sent from the cloud -- where it's already tomorrow
========================================================================
10 years
Re: [fedora-virt] 3.13 - Nested KVM (vmx) totally broken?
by Ian Pilcher
On 03/04/2014 03:30 AM, Kashyap Chamarthy wrote:
> If you want to try, I made a Fedora Kernel scratch build (i.e. not
> official) with fix Paolo pointed to below and this works for me:
>
> http://koji.fedoraproject.org/koji/taskinfo?taskID=6577700
Works here. Thanks!
--
========================================================================
Ian Pilcher arequipeno(a)gmail.com
Sent from the cloud -- where it's already tomorrow
========================================================================
10 years