Hi All,
I have good and bad news...
I tested QEMU-KVM using branches 'master'
(9501d0f1b6efc83f69d06b27a625bad71d30d58b) and 'uq/master'
(6a48ffaaa732b2142c1b5030178f2d4a0fa499fe). Seabios used was the
version
included in those branches (no -L switch). Both branches failed to
detect
the USB Flash Drive (error message: 'Unable to configure USB MSC
device.').
I checked out SeaBios branch 'master'
(b3df857fe6d3fffb108379637ea4a456ce6e09ba) and passed that to QEMU-KVM
using the -L switch. Both branches don't fail as bad. Both versions
detect
the USB Flash Drive (message: 'USB MSC blksize=512 sectors=204800') and
then indicate they are booting from hard disk.
In order to see the console, I had to copy the following files into the
directory specified by the -L switch in order to see the screen:
- vgabios-cirrus.bin
- pxe-rtl8139.rom
- vapic.bin
I also noticed one new regression: booting runs REALLY REALLY slow. The
upgrade from 0.14 w/ USB to git master w/ IDE slowed down a little bit.
But this is magnitudes slower. While I'm waiting, I see one of my
cores
at 100% usage.
---
Thanks,
Dyweni
On Thu, 19 Jan 2012 20:57:11 -0500, Kevin O'Connor wrote:
On Thu, Jan 19, 2012 at 06:57:59AM -0600, Dyweni - Qemu-Devel wrote:
Hi, I am unable to boot KVM using a usb flash drive. I'm using
QEMU-KVM
built from GIT MASTER as of this morning. Here's my QEMU-KVM startup
options: qemu-system-x86_64 -curses -m 512 -snapshot -device
piix3-usb-uhci -drive
id=usbflash,file=flash.img,if=none,boot=on,cache=writeback -device
usb-storage,drive=usbflash -net nic,macaddr=$(getmacpublic),vlan=0
-net
tap,vlan=0,ifname=$publictap,script=no -net
nic,macaddr=$(getmacprivate),vlan=1 -net
tap,vlan=1,ifname=$privatetap,script=no $*
I tried a modifed version of the above, and it worked fine for me.
qemu-system-x86_64 -snapshot -L test -device piix3-usb-uhci -drive
id=usbflash,file=dos-drivec-new,if=none,cache=writeback -device
usb-storage,drive=usbflash -chardev stdio,id=seabios -device
isa-debugcon,iobase=0x402,chardev=seabios What version of qemu are
you
using? There are a few known quirks in the seabios code that were
fixed
recently, but I did not think they impacted the qemu emulation.
-Kevin
