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Unable to start Qemu Error : Failed to start qemu
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Author:  hiakaash [ Sun Aug 22, 2010 2:52 pm ]
Post subject:  Unable to start Qemu Error : Failed to start qemu

I'm using GNS3 0.7.2 on Ubuntu 10.04 whenever i click on Test tab of Qemu i get an Error : Failed to start qemu
I'm also not sure what to give in Path to qemu image.
Please help
I'm attaching the configuration screenshot

Attachments:
Screenshot-Preferences.png
Screenshot-Preferences.png [ 52.83 KiB | Viewed 14173 times ]

Author:  rednectar [ Mon Aug 23, 2010 12:50 am ]
Post subject:  Re: Unable to start Qemu Error : Failed to start qemu

I haven't had any problems with Ubuntu 10.04 but my settings are:
Attachment:
Screen shot 2010-08-23 at 10.46.35 AM.png
Screen shot 2010-08-23 at 10.46.35 AM.png [ 87.91 KiB | Viewed 14364 times ]


Another approach I've found that works when I've had this problem (on Macintosh OS X) is to manually start qemuwrapper BEFORE starting GNS3, then ignoring any warning messages that come up about it.

Author:  hiakaash [ Sun Aug 29, 2010 11:42 am ]
Post subject:  Re: Unable to start Qemu Error : Failed to start qemu

Ok I'll give it a try and let you know the outcome...
Thanks for your reply Rednectar

Author:  selvan [ Wed Jan 04, 2012 7:54 am ]
Post subject:  Re: Unable to start Qemu Error : Failed to start qemu

Hello,

I am not able to start qemu guest. please help me to resolve this error "Failed to start qemu" .

Path to qemuwrapper : /Applications/GNS3.app/Contents/Resources/qemuwrapper.py
Path to qemu : /usr/local/bin/qemu
Path to qemu-img : /Users/selvanseluvappan/Downloads/qemu-0.15.1.tar.gz
qemuwraper port :10525 TCP
bash console port : 3000 TCP
bash UDP port : 20000 UDP

Author:  krishsongara [ Tue Jul 09, 2013 2:13 pm ]
Post subject:  Re: Unable to start Qemu Error : Failed to start qemu

hi
i am not able to find the
/usr/local/bin/qemu
Kindly Help me

Author:  rednectar [ Wed Jul 10, 2013 11:18 am ]
Post subject:  Re: Unable to start Qemu Error : Failed to start qemu

Code:
cd /tmp
wget -O QEMU-0.11.0-GNS3-Ubuntu-Linux.tgz http://sourceforge.net/projects/gns-3/files/Qemu/Linux/QEMU-0.11.0-GNS3-Ubuntu-Linux.tgz/download
tar xvf QEMU-0.11.0-GNS3-Ubuntu-Linux.tgz
cd QEMU-0.11.0-GNS3-Ubuntu-Linux
sudo ./Qinstall


In GNS3 Preferences, Qemu settings, be sure to specify:
Path to qemu: qemu
Path to qemu-img: qemu-img

Author:  fahmpers [ Tue Dec 10, 2013 7:45 am ]
Post subject:  Re: Unable to start Qemu Error : Failed to start qemu

rednectar wrote:
Code:
cd /tmp
wget -O QEMU-0.11.0-GNS3-Ubuntu-Linux.tgz http://sourceforge.net/projects/gns-3/files/Qemu/Linux/QEMU-0.11.0-GNS3-Ubuntu-Linux.tgz/download
tar xvf QEMU-0.11.0-GNS3-Ubuntu-Linux.tgz
cd QEMU-0.11.0-GNS3-Ubuntu-Linux
sudo ./Qinstall


In GNS3 Preferences, Qemu settings, be sure to specify:
Path to qemu: qemu
Path to qemu-img: qemu-img


i've did it.. but now i found new problem, it's says "you are running an old AND unpatched version of qemu...."

then i download qemu patched from gns3.net and get QEMU-0.14.1-patched_src.tgz , unfurnatelly i don't know how to patch qemu with this file..

thanks before, for your help

Author:  rednectar [ Tue Dec 10, 2013 10:44 am ]
Post subject:  Re: Unable to start Qemu Error : Failed to start qemu

I have a whole chapter called "Unleashing Other Emulators" in my book GNS3 Network Simulation Guide

[Disclaimer: I am the author of this book]

Here is an extract - the formatting gets lost when I paste into a post - much easier to read in the original
Quote:
Linux
Here is how to download and install Qemu 0.11.0. I chose this version because it is already patched and it is proven to work.
wget http://sourceforge.net/projects/ gns-3/files/Qemu/Linux/QEMU-0.11.0-GNS3-Ubuntu-Linux.tgz
tar xvf QEMU-0.11.0-GNS3-Ubuntu-Linux.tgz cd QEMU-0.11.0-GNS3-Ubuntu-Linux
sudo ./Qinstall
When you configure Qemu in the next section, use these values:
Path to Qemuwrapper: /usr/share/gns3/qemuwrapper.py Path to qemu: qemu
Path to qemu-img: qemu-img
Qemu preferences
Start by navigating to GNS3 Preferences | the Qemu settings | the General Settings tab.
´┐╝´┐╝Click on the Test Settings button to ensure that your OS has paths to qemuwrapper, qemu and qemu-img. If not, check your GNS3 install directory and make sure these files are present. If necessary, specify the exact path to each by clicking on the ellipsis (...) next to the field where these paths are defined and find the appropriate directories.

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