Qemu is broken if configured without --enable-debug option

[aszeszo]

Hi Joyent!

Qemu seems to be broken when configured without --enable-debug option. It is broken for me on two different machines one with dual E5620 CPUs the other one with single i7-2600K CPU.

The easiest way to replicate the problem is to try booting 64-bit CentOS 6 iso. It is booting OK when qemu is configured with --enable-debug. It fails to boot when Qemu is compiled without this option. See the screenshot here: http://i.imgur.com/3oAkc.png

Please fix! :D

Andrzej

[rmustacc]

Hi,

We've been able to boot several 64-bit Linux images without using the enable-debug option and the failure you have there is generally seen when Linux can't find a device for the root filesystem.

For starters, what system are you running this on? SmartOS, OI, something else? Where did you get the kvm driver from? Did you build it yourself or are you using it from one of the distributions mentioned above?

It sounds like you're compiling from source, can you verify that for me? If so, are you using ./build.sh or are you manually running configure. If the latter, what configure options are you using?

From there, how are you invoking qemu, what are the arguments that you are using?

Thanks.

[aszeszo]

Hi Robert

I am running OI + recent illumos. Everything is built from source. I
have tried OI packages also and they behave in the same way.

CentOS 6 64-bit ISO + qemu built using default build.sh script is booting fine
CentOS 6 64-bit ISO + qemu built using build.sh script with
--enable-debug removed fails to boot with the "uncompression error"
like in the screenshot.

Ubuntu 11.04 is always booting fine. Doesn't matter if it is
configured with --enable-debug or not.

Andrzej

On 8 September 2011 16:07, Robert Mustacchi
[email protected]
wrote:

Hi,

We've been able to boot several 64-bit Linux images without using the enable-debug option and the failure you have there is generally seen when Linux can't find a device for the root filesystem.

For starters, what system are you running this on? SmartOS, OI, something else? Where did you get the kvm driver from? Did you build it yourself or are you using it from one of the distributions mentioned above?

It sounds like you're compiling from source, can you verify that for me? If so, are you using ./build.sh or are you manually running configure. If the latter, what configure options are you using?

From there, how are you invoking qemu, what are the arguments that you are using?

Thanks.

Reply to this email directly or view it on GitHub:
#1 (comment)

[rmustacc]

Andrzej, can you share what arguments you're using to invoke QEMU for both the Ubuntu and CentOS case?

[aszeszo]

Here are the command lines I have been using for testing:

pfexec /opt/qemu/bin/qemu-system-x86_64
-vnc 0.0.0.0:1
-enable-kvm
-smp 2
-m 2048
-no-hpet
-localtime
-drive file=/export/isos/ubuntu-11.04-desktop-amd64.iso,media=cdrom,if=ide,index=2
-vga std

pfexec /opt/qemu/bin/qemu-system-x86_64
-vnc 0.0.0.0:1
-enable-kvm
-smp 2
-m 2048
-no-hpet
-localtime
-drive file=/export/isos/CentOS-6.0-x86_64-minimal.iso,media=cdrom,if=ide,index=2
-vga std