On 08/18/2009 01:59 PM, Patrick O'Callaghan wrote:
(Please don't top-post, see the Guidelines).
On Tue, 2009-08-18 at 15:42 -0300, Itamar Reis Peixoto wrote:
don't use VM$#$$#$#
please use KVM, libvirt and virt-manager
xen is also available.
Some kind of reasoned argument would be worthwhile here. I use both VBox
and occasionally VMware because I could never get KVM to work. There
seemed to be some key part of it missing, but it may have been just bad
documentation. This was a few releases back so maybe it has improved,
but I already have my VMs set up the way I like them.
For example, does KVM now support USB devices reliably? That's a
show-stopper for me.
poc
Wrong question.
The correct question is: Has USB support been improved in qemu?
Qemu is also used by Xen.
The answer: YES!
I have successfully used a Fedora 32 bit VM to install to a USB key on a
64 bit host. Very cool. I passed the usb host:vendor_id:device_id info
from lsusb to qemu and it worked like a charm.
From my tests on building embedded systems and a few other VMs, KVM was
far and away faster than the VMware I tested, and setting up XEN seems
superfluous; there is simply no advantage that I know of, except that
XEN is kept up in RHE/Centos whereas KVM is not. You would need a
2.6.20 or greater kernel, which RHE 5.X won't have.
Good luck!
Here is the snippet from the qemu man page:
USB options:
-usb
Enable the USB driver (will be the default soon)
-usbdevice devname
Add the USB device devname.
"mouse"
Virtual Mouse. This will override the PS/2 mouse
emulation when
activated.
"tablet"
Pointer device that uses absolute coordinates (like a
touchscreen). This means qemu is able to report the mouse
position without having to grab the mouse. Also
overrides the
PS/2 mouse emulation when activated.
"disk:[format=format]:file"
Mass storage device based on file. The optional format
argument
will be used rather than detecting the format. Can be
used to
specifiy format=raw to avoid interpreting an untrusted
format
header.
"host:bus.addr"
Pass through the host device identified by bus.addr (Linux
only).
"host:vendor_id:product_id"
Pass through the host device identified by
vendor_id:product_id
(Linux only).
"serial:[vendorid=vendor_id][,productid=product_id]:dev"
Serial converter to host character device dev, see "-serial"
for the available devices.
"braille"
Braille device. This will use BrlAPI to display the braille
output on a real or fake device.
"net:options"
Network adapter that supports CDC ethernet and RNDIS
protocols.
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