Hi, great work.
While playing with kvm-qemu I noticed a few points that might be of interrest:
1/ -loadvm and -snapshot don't work together. It works as if -loadvm wasn't
passed as argument
2/ two instances of kvm can be passed the same -hda. There is no locking
whatsoever. This messes up things seriously.
3/ trying to run 'savevm' in the qemu console when -usb is used results in
(qemu) savevm scite
(qemu) exception 13 (0)
rax 0000000000000000 rbx 0000000000000000 rcx 0000000000000010 rdx
0000000000000000
...
This is documented but a warning in the console would be better than a crash
if the vm is stopped first, 'savevm' works but it still crashes on 'cont'
instead
4/ if -vga-std is used when doing a 'savevm', 'loadvm' restores a black
screen. Everything is there and with some gymnastic (moving a window around)
the screen is like it should be.
5/ -usbdevice tablet is a must, 'ctl+alt' is just too painfull! is it possible
to get the same effect (with another system) and still be able to 'savevm'?
6/ If you use -usbdevice tablet, keyboard is first handled by guest OS. In my
case I have 'alt F4' close windows in the host OS. If I try to close a window
in the guest OS with 'alt f4', it closes qemu altogether.
7/ On the other hand, mouse events are _not_ handled by the gues OS first, IE:
alt click isn't handled by X but by windows (in this case)
8/ keyboard input lost when switching to full screen or back. fixed by
using 'ctl+alt' twice
9/ IMHO, the way "versionning" with 'savevm' is done could feel more natural.
first run
time ------------------------------> stop VM
^ |
| |
| v
savevm state1 automatically save "HEAD" in -hda
second run
time ------------------------------>stop VM
^ |
| |
| v
loadvm state1 automatically save "HEAD" in -hda
^
|
.----------'
|
.-------------------------------------------------.
| I believe most people want to save in 'state1' |
| or possibly in 'state2' but few want to |
| override "HEAD" |
'-------------------------------------------------'
automatically overriding 'state1' feels as wrong as overriding "HEAD". I
believe that a -savevm to qemu would be a good idea. If nothing is passed as
argument "HEAD" is used. That would preserve "HEAD" and allow saving to a
user defined vm snapshot.
10/ subscription to the mailing list doesn't seem to work
Cheers, Nadim.
# what kvm version you are using. qemu 0.9.1
# the cpu, arch and host kernel version: Linux 2.6.24 #9 SMP x86_64 Intel(R)
Core(TM)2 Quad CPU @ 2.66GHz GenuineIntel GNU/Linux
# what guest you are using, including OS type Windows XP SP2 (32 I guess)
# the qemu command line you are using to start the guest
qemu-system-x86_64 -no-acpi -m 1536 -hda overlay.img -boot c -monitor
stdio -usb -smp 2 -std-vga -smb /home/nadim/ -k
fr
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