Re: [Qemu-devel] Serial Console / NoGraphic

2007-09-25 Thread Michael McConnell

Clemens Kolbitsch wrote:

hi!
i've been trying around for quite some time now trying to start qemu without 
the graphic screen... can someone tell me exactly what I'm supposed to do??


i want to redirect the output of my i386 debian linux to my host-console (also 
a i386 debian) to fully see the output of a kernel panic (see previous 
messages i have posted).


i'm starting qemu:

qemu -hda myimage -boot c -kernel-kqemu -kernel mykernel -initrd 
myinitrd -append "root=/dev/hda1 console=/dev/ttyS0" -nographic


after tons of trial-and-error i finally got my system to boot, however, the 
login-screen is not displayed (i see all output of the starting system up 
until the ">>login:"). how do i connect to the serial line now to get to the 
login??


Add this to /etc/inittab in the guest system:
co:2345:respawn:/sbin/agetty ttyS0 9600 vt100-nav

Without that it's only going to put the login prompts on the (now 
hidden) virtual consoles.


The (emulated) hardware display still exists, it's just not shown. I use 
just such a setup for a Win2000 virtual-machine that's accessible by 
VNC. I've had issues with QEMU's own VNC server (it crashes with a core 
dump on disconnection, and no-one on the list was remotely interested) 
so instead I run UltraVNC within Win2000 and connect to that instead.


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Re: [Qemu-devel] Can I run FC4 inside Qemu on Sparc?

2007-02-13 Thread Michael McConnell (Mailing Lists)

Neo Jia wrote:
Thanks for your messages. But if I would like stick on Solaris 9, is 
there any workaround for me?


If it's of any help I run Solaris 9, though in QEMU on my x86 system.

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Re: [Qemu-devel] Using QEMU as a terminal server?

2007-01-12 Thread Michael McConnell

Alexandre Leclerc wrote:

Hi all,

I was thinking to something weird, but I don't know if it is totally
doable. So I ask your expertise. (Being under Linux to use W2K
images.)

- ssh login.
- then the login script launch a qemu session without the X session
(running without visual).
- there would be UltraVNC server inside the OS
- find a way to catch the nat ip address of this new qemu session
- trhu the ssh tunel, connect UltraVNC viewer to server.

Here we go I have a nive 'Terminal Server' connection.

Ok, if the ssh thing is not working, or simply, let us remove this
aspect; would such a thing be possible?

Having something like that would be amasing because then doing
windows-like terminal server on linux becomes possible. You map the
sessions in read-only to a master image file and there you go.


I do something very similar.

My localnet uses IPs in 192.168.a.0/24, and my QEMU sessions operate on 
separate 192.168.b.x/30 subnets, and for my Win2000 QEMU session I have 
ipchains NATing outbound connections and transparently forwarding a 
192.168.a.y address that is aliased on the host's eth0 (the host handles 
192.168.a.z as normal) to the 192.168.b.x/30 address used within QEMU. I 
then just open a VNC connection to 192.168.a.y port 5900, and it all 
works fine.


This forwarding means my net-facing box which handles inbound SSH from 
the internet can "see" the QEMU virtual machine without requiring a 
second level of port-forwarding.


My ssh looks something like this, from the outside world:

ssh -L5944:192.168.96.y:5900 -C [EMAIL PROTECTED]

The -C compresses, and despite VNC doing a lot of compression on its 
own, this does help, especially on low-bandwidth connections (e.g. 
dial-up, GPRS)


If you want to use user-mode networking instead of the tunnelling 
device, use the "-redir tcp:5900::5900" option for QEMU, then the host's 
port 5900 will be forwarded into the QEMU VNC server.


Hope that's of some help.

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Re: [Qemu-devel] /dev/kqemu could not be opened

2006-12-02 Thread Michael McConnell
On Sat, 2 Dec 2006, Mihamina Rakotomandimby wrote:

> Hi,
> I installed kqemu 1.3.0-pre9 and qemu 0.8.2. /dev/kqemu exist and is
> widely "usable" (chmod 666 and 777 tested)
> 
>   $ ls -l /dev/kqemu 
>   crwxrwxrwx 1 root root 250, 0 2006-12-02 23:34 /dev/kqemu
> 
> But when launching qemu:
> 
>   $ qemu -m 512  debian.img 
>   Could not open '/dev/kqemu' - 
>   QEMU acceleration layer not activated
> 
> /dev/kqemu is not openable What could be the problem?

Is the kqemu module loaded?

If not, try 'modprobe kqemu' then restart QEMU.

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Re: [Qemu-devel] Base images

2006-11-24 Thread Michael McConnell
On Thu, 23 Nov 2006, Don Kitchen wrote:

> > > - I noticed that images refer to their base image using an absolute path. 
> > > Is
> > > there a way to change an image's base image reference? (for example when 
> > > the
> > > base image is renamed / moved to a different directory)
> > qemu-img convert [-c]  -O qcow 
> > should do what you want.
> 
> I believe that forces a delta file to merge in with its base. Definately not 
> the same as relocation.

The original question I answered:

David Roberts wrote:
> Hi,
> 
> I've got a couple of questions about creating images linked to base images:
> - `qemu-img commit` commits changes directly to the base image. Is there a
> way to create a new merged image with the changes so as not to change the
> original?

...and my qemu-img convert command above will do exactly that.

Your misquoting has implied the command I gave would do something else, which 
it won't.

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Re: [Qemu-devel] Base images

2006-11-22 Thread Michael McConnell
On Wed, 22 Nov 2006, David Roberts wrote:

> > qemu-img convert [-c]  -O qcow 
> >
> > should do what you want.
> Great. However, does that mean that I cannot compress an image without 
> merging 
> it with its base image?

I believe so, yes. It makes sense for the changes file to be uncompressed, 
since it makes life so much simpler (and faster) for random-access writes.

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Re: [Qemu-devel] -snapshot and tmpsfs

2006-11-18 Thread Michael McConnell
On Sat, 18 Nov 2006, Ottavio Caruso wrote:

> Are the writes to tmpfs (in a *nix guest OS) recorded to the
> snapshotted image?
> 
> Example: /var/run on tmpfs
> OS writes to /var/run. Bigger temp file or not?

This isn't a guaranteed certain answer, but IIRC tmpfs uses system RAM and 
swap as its storage.  Therefore a guest writing into its tmpfs space would 
only touch the host filesystem if it were to use the swapfile.

As you say you're using the snapshot mode it would, if the swapfile is 
touched, go into the snapshot temp file, otherwise it wouldn't.

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Re: [Qemu-devel] User-mode proxy support

2006-11-17 Thread Michael McConnell

Ricardo Almeida wrote:

Hello,

I'm using QEmu with user mode network. The host machine can't access
the Internet directly, only through a proxy server.
Since I'm using user mode network there's no way I can connect to the
proxy from inside the guest machine (is there?).
What I'm suggesting is building a proxy server (just as there is a DNS
and a SMB server) that in reality is just a package forwarder to the
real proxy server... I don't know if this easy to do, but it's what I
would like :)


If you set the guest's default route to 10.0.2.2 then it should be able 
to reach your proxy server, perhaps using its IP address rather than 
hostname if you haven't set up DNS.


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Re: [Qemu-devel] pronunciation of Qemu

2006-06-28 Thread Michael McConnell
On Wed, 28 Jun 2006, Paul Robinson wrote:

> How should you pronounce Qemu?
> 
> FYI, my best guess is Q (as in the letter Q) followed by the first 2
> syllables of emulator.

I've personally always pronounced it "kwemu"...

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Re: [Qemu-devel] "invisible wall" patch

2006-06-13 Thread Michael McConnell

Julian Seward wrote:
Could somebody please commit, or at least consider committing, 
Anthony Liguori's "invisible wall" patch, shown at 
http://lists.gnu.org/archive/html/qemu-devel/2006-05/msg00112.html ?


Without it, QEMU is essentially unusable on my SuSE 10 host; with it,
the mouse stuff works perfectly.  A couple of other people on that
thread had similar experiences with it.


I'll add my voice to this - with WinXP and Win2000 guests, without this 
patch they were virtually unusable.  They work fine with it.


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Re: [Qemu-devel] QEMU 0.8.1 VNC: Segfault on closing

2006-05-21 Thread Michael McConnell
On Sun, 21 May 2006, Anthony Liguori wrote:

> Michael McConnell wrote:
> > On Sun, 21 May 2006, Anthony Liguori wrote:
> >
> >   
> >> Michael McConnell wrote:
> >> 
> >>> When I try to use QEMU's VNC server, every time I close the connection it
> >>> segfaults.  So far I've been unable to trace the cause of this (gdb 
> >>> appears
> >>> to be next to useless at tracing the execution), but it is totally
> >>> repeatable.
> >>>   
> >> Can you provide more information?  What VNC client are you using? 
> >
> > TightVNC 1.2.9 - and the fault can also be triggered by just telnetting to 
> > the VNC port and closing the connection.
> 
> Curious, I've not seen this myself and your configuration does not seem 
> out of the ordinary.
> 
> Can you try with CVS and 0.8.1?  Also, make sure that you're doing a 
> full build if you've built this from CVS as the dependences in the 
> Makefile aren't good.

Not having quite figured out how to get CVS to work as I so rarely have to
use it (nor could I find a link on qemu.org) I tried with the
qemu-snapshot-2006-05-21_23.tar.bz2 snapshot from qemu.dad-answers.com.  And
ran into exactly the same problem.  gdb is equally useless on this build too.

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Re: [Qemu-devel] QEMU 0.8.1 VNC: Segfault on closing

2006-05-21 Thread Michael McConnell
On Sun, 21 May 2006, Anthony Liguori wrote:

> Michael McConnell wrote:
> > When I try to use QEMU's VNC server, every time I close the connection it
> > segfaults.  So far I've been unable to trace the cause of this (gdb appears
> > to be next to useless at tracing the execution), but it is totally
> > repeatable.
> >   
> 
> Can you provide more information?  What VNC client are you using? 

TightVNC 1.2.9 - and the fault can also be triggered by just telnetting to 
the VNC port and closing the connection.

> What 
> host architecture are you on?  What is the guest OS/target?

I already gave that - REinserting immediately below.
(It was in the second paragraph, which you inserted your reply above.)
For those not familiar with AMD, the Athlon
XP2000+ is an ix86 32-bit CPU.

> > Running with kqemu 1.3.0pre7 in -kernel-kqemu with Windows XP as the guest 
> > operating system, the host is an Athlon XP2000+ running kernel 2.6.14, and 
> > glibc 2.1.3. QEMU was compiled with gcc 3.4.3.

> Can you provide a stack trace that leads to the seg fault?

GDB seems unable to - this is how it started off when analysing the core 
dump:
[EMAIL PROTECTED] QEMU]# gdb /usr/local/bin/qemu-i386 core
GNU gdb 19991004
Copyright 1998 Free Software Foundation, Inc.
GDB is free software, covered by the GNU General Public License, and you are
welcome to change it and/or distribute copies of it under certain conditions.
Type "show copying" to see the conditions.
There is absolutely no warranty for GDB.  Type "show warranty" for details.
This GDB was configured as "i386-redhat-linux"...

Dwarf Error: Cannot handle DW_FORM_strp in DWARF reader.

Core was generated by `qemu-i386 -m 128 -sync -kernel-kqemu -boot c -net 
nic,macaddr=fe:fd:00:00:00:01'.
Program terminated with signal 11, Segmentation fault.
Reading symbols from /lib/libm.so.6...done.
Reading symbols from /usr/lib/libz.so.1...done.
Reading symbols from /usr/local/lib/libSDL-1.2.so.0...done.
Reading symbols from /lib/libpthread.so.0...done.
Reading symbols from /lib/libutil.so.1...done.
Reading symbols from /lib/libc.so.6...done.
Reading symbols from /lib/libdl.so.2...done.
Reading symbols from /usr/X11R6/lib/libX11.so.6...done.
Reading symbols from /usr/X11R6/lib/libXext.so.6...done.
Reading symbols from /lib/ld-linux.so.2...done.
#0  0x804ff4a in ?? ()
(gdb) bt
#0  0x804ff4a in ?? ()
(gdb) quit
[EMAIL PROTECTED] QEMU]# gdb ls

I have no idea what this "dwarf error" is.

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[Qemu-devel] QEMU 0.8.1 VNC: Segfault on closing

2006-05-21 Thread Michael McConnell
When I try to use QEMU's VNC server, every time I close the connection it
segfaults.  So far I've been unable to trace the cause of this (gdb appears
to be next to useless at tracing the execution), but it is totally
repeatable.

Running with kqemu 1.3.0pre7 in -kernel-kqemu with Windows XP as the guest 
operating system, the host is an Athlon XP2000+ running kernel 2.6.14, and 
glibc 2.1.3. QEMU was compiled with gcc 3.4.3.

(I tried upgrading glibc, had to restore the machine from a backup.)

Any pointers would be much appreciated...

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Re: [Qemu-devel] Re: qemu disk on vfat

2006-05-08 Thread Michael McConnell
On Tue, 9 May 2006, Yann Le Doaré wrote:

> You are right ! :
> 
> sh-2.05b# qemu-img create /mnt/partitions/windows0/qmeu-disk 4M
> Formating '/mnt/partitions/windows0/qmeu-disk', fmt=raw, size=4096 kB
> sh-2.05b# ls -al /mnt/partitions/windows0/qmeu-disk
> -rwxr-xr-x1 root root0 2006-05-09
> 23:37 /mnt/partitions/windows0/qmeu-disk
> sh-2.05b# qemu-img create /mnt/partitions/windows0/qmeu-disk 40M
> Formating '/mnt/partitions/windows0/qmeu-disk', fmt=raw, size=40960 kB
> sh-2.05b# ls -al /mnt/partitions/windows0/qmeu-disk 
> -rwxr-xr-x1 root root0 2006-05-09
> 23:38 /mnt/partitions/windows0

IIRC creating a "raw" QEMU disc image makes use of sparse files, a concept 
not supported under FAT16/32.  A qcow disc image should work fine.  If you 
want to create a raw disc image on a FAT partition, use (from your example)
dd if=/dev/zero of=/mnt/partitions/windows0/qmeu-disk bs=1024 count=40960

It'll take a bit longer than qemu-img would but then it's having to write out 
every block in the disc image to the real disc.

Hope that helps.

> Le lundi 08 mai 2006 à 16:12 -0500, Anthony Liguori a écrit :
> > On Sun, 07 May 2006 08:13:01 +, Yann Le Doaré wrote:
> > 
> > > Hi,
> > > 
> > > It seems like qemu 0.8.0 does not accept image file from a vfat partition.
> > > Is it a bug ?
> > > 
> > > Greetings.
> > > 
> > > Yann Le Doaré.
> > > 
> > > 
> > > strace :
> > > 
> > > open("/mnt/partitions/windows0/qmeu-disk", O_RDONLY|O_LARGEFILE) = 7
> > > read(7, "", 1024)   = 0 close(7)  
> > >  = 0 open("/mnt/partitions/windows0/qmeu-disk",
> > > O_RDONLY|O_LARGEFILE) = 7 _llseek(7, 128, [128], SEEK_SET)= 0
> > > read(7, "", 4)  = 0 close(7)  
> > >  = 0 write(2, "qemu: could not open hard disk i"..., 74qemu: could
> > > not open hard disk image '/mnt/partitions/windows0/qmeu-disk' ) = 74
> > > exit_group(1)   = ?
> > 
> > It's pretty clear that what's happening is that qemu opening the file and
> > the filesystem is claiming it's an empty file.
> > 
> > So, I recommend you do the following:
> > 
> > First:
> > 
> > du -sh /mnt/partitions/windows0/qmeu-disk
> > ls -al /mnt/partitions/windows0/qmeu-disk
> > 
> > And make sure both report a non-zero result.  If either reports 0 as the
> > size, then you screwed up copying the file to your vfat partition.
> > 
> > Second:
> > 
> > In vl.h, change:
> > 
> > #ifndef O_LARGEFILE
> > #define O_LARGEFILE 0
> > #endif
> > 
> > To:
> > 
> > #ifdef O_LARGEFILE
> > #undef O_LARGEFILE
> > #endif
> > #define O_LARGEFILE 0
> > 
> > And if that fixes your problem, then vfat is broken when open()'d with
> > O_LARGEFILE.  If that's the case, you should report it as a vfat bug.
> > 
> > Regards,
> > 
> > Anthony Liguori
> > 
> > 
> > 
> > ___
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> > http://lists.nongnu.org/mailman/listinfo/qemu-devel
> 
> 
> 
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Re: [Qemu-devel] Patch to make configure /bin/sh compatible

2006-04-14 Thread Michael McConnell
On Fri, 14 Apr 2006, Thiemo Seufer wrote:

> Ben Taylor wrote:
> > This is a patch to make configure truly /bin/sh compatible,
> > as well as changing some logic to remove "echo -n" for
> > output to files, as "echo -n" is not consistent among
> > environments.
> > 
> > This is against the latest cvs branch, and I appreciate
> > any feedback.
> 
> [snip]
> > @@ -294,7 +295,7 @@
> >  target_list="i386-user arm-user armeb-user sparc-user ppc-user 
> > mips-user mipsel-user $target_list"
> >  fi
> >  else
> > -target_list=$(echo "$target_list" | sed -e 's/,/ /g')
> > +target_list=`echo "$target_list" | sed -e 's/,/ /g'`
> 
> A standard-conforming /bin/sh should be capable of handling this.

I've seen various /bin/sh (and ksh) versions that will accept the `` form 
but not the $(...) form.  It's bitten me a few times too.

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Re: [Qemu-devel] qemu crash with exit code 135

2006-02-22 Thread Michael McConnell
On Tue, 21 Feb 2006, Christian Bourque wrote:

> Hi!
> 
> Every time I try to access a particular functionality in one of my
> application QEMU crashes with the exit code 135, is there a way to
> interpret this number?

Usually, exit codes just over 128 are the result of a signal killing it, with 
the exit code being 128+signal. In this case, the signal was 7, SIGBUS.

You can test this theory... in one xterm, enter "sleep 60", and in another, 
look up the process and kill it with signal 7. You may see an error message 
from the sleep window, and the exit code will be 135.

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Re: [Qemu-devel] Roomity.com v 1.5 is a web 2.01

2005-11-08 Thread Michael McConnell
On Tue, 8 Nov 2005, [iso-8859-2] Jernej Simonèiè wrote:

> On Tuesday, November 8, 2005, 22:38:07, shenanigans wrote:
> 
> > We have mirrored your mail list in a new application that provides a more
> > aggregated and safe environment which utilizes the power of broadband.
> 
> Unless this has been done with the approval from administrators, I'm against
> it. This is the 3rd mailing list I'm subscribed to that's been added (both
> previous lists were added without the approval of moderators and have banned
> this service).

I'd suspect this is an elaborate spam. If this was a serious, legitimate 
message somehow I don't think the sender ID would be "shenanigans".

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Re: [Qemu-devel] getting past the ctrl-alt-del login in NT

2005-09-25 Thread Michael McConnell

Andreas Mohr wrote:

Hi,

On Sun, Sep 25, 2005 at 09:58:30PM +1200, Wesley Parish wrote:

Does anyone using qemu know how to do that?  bochs has a setting in its 
bochsrc file that allows you to click on "user-configured button" and it 
sends ctrl-alt-del to WinNT 4.0.


Is there any analogy to that in qemu?


I'm almost 100% certain the qemu monitor has an option to send keycodes
that you need for workarounds in certain situations.

DISCLAIMER: Not A Qemu User (tm)


I have an NT4 installation under QEMU on my Linux box - and in grab 
mode, all I do is... press CTRL-ALT-DEL. Clicking in the window or 
hitting CTRL-ALT enters grab mode.


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Re: [Qemu-devel] Q: Issue booting Solaris 8 (SPARC)

2005-08-01 Thread Michael McConnell

Blue Swirl wrote:

Hi,

Looks like the boot block gets loaded correctly (nice data point). It's 
a bit confusing to see UFS in the error message, shouldn't that be ISOFS 
or CDFS?


I'm not sure if this is relevant, but the line "Kernel loaded" surely the size 
should be somewhat larger than 0K?


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-- Michael "Soruk" McConnell
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Re: [Qemu-devel] Qemu with Kqemu on Fedora Core using GCC 4.0

2005-05-10 Thread Michael McConnell
On Tue, 10 May 2005, Fabrice Bellard wrote:

> Hetz Ben Hamo wrote:
> > Hi,
> > 
> > At the moment, QEMU does not compile with GCC 4.0. 
> > You can find the GCC 3.x RPMS in your installation media, along with
> > instructions how to use the GCC 3.x instead of GCC 4.
> 
> I just updated the FAQ with this issue.

I can't get it to compile with 2.96 either (QEMU 0.6.1 had no problems there)

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[Qemu-devel] QEMU 0.7.0 - IDE patch for Solaris-X86

2005-04-28 Thread Michael McConnell
This is a forward-port of the patch for 0.6.1 (that I found on the web, 
may have been this list, a while back) needed to get Solaris-X86 to run 
with the IDE interface in PCI mode.

--- qemu-0.7.0/hw/ide.c.orig2005-04-27 21:52:05.0 +0100
+++ qemu-0.7.0/hw/ide.c 2005-04-28 08:32:59.0 +0100
@@ -500,6 +500,8 @@
 static inline void ide_set_irq(IDEState *s)
 {
 if (!(s->cmd & IDE_CMD_DISABLE_IRQ)) {
+   BMDMAState *bm = s->bmdma;
+   if(bm) bm->status |= BM_STATUS_INT;
 #ifdef TARGET_PPC
 if (s->openpic)
 openpic_set_irq(s->openpic, s->irq, 1);
--
-- Michael "Soruk" McConnell
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