<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><br><div><div>On Jan 8, 2014, at 10:03 PM, Sanjib Das <<a href="mailto:cnt.sanjib@googlemail.com">cnt.sanjib@googlemail.com</a>> wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div dir="ltr"><div><div><div><div>Dear Concern, <br></div>This time I am trying to boot QEMU image provided in LITMUS-RT wiki with the following code:<br>qemu-system-x86_64 -gdb tcp::1234 -s -S -enable-kvm -cpu host -smp 2 -m 512 -kernel /home/sdas/litmus/litmus-rt/arch/x86_64/boot/bzImage -hda /home/sdas/ubuntu_iso/ubuntu.backing.qcow2.img -append "console=ttyS0,115200 root=/dev/sda8" -nographic -net nic<br>
<br></div>where the kernel image was compiled by following the instruction given in plug-in tutorial <a href="https://wiki.litmus-rt.org/litmus/CreateAPluginTutorial/Step0">https://wiki.litmus-rt.org/litmus/CreateAPluginTutorial/Step0</a> . <br>
<br></div>And I am using also gdb to control qemu stub. (eg. target remot localhost:1234 and continue)<br><br></div><div>But still I am getting '<em><strong class="">kernel</strong> <strong class="">panic</strong> not syncing vfs unable to mount root fs on unknown-block (0,0)</em>'. <br>
<br></div><div>Moreover only qemu image is loading smoothly with the following command:<br><br>qemu-system-x86_64 -gdb tcp::1234 -hda /home/sdas/ubuntu_iso/ubuntu.backing.qcow2.img -nographic<br><br></div><div>My current system is UBUNTU 12.04 and its a multi boot system. <br>
<br></div><div>Would be grate with a quick reply or suggestion. <br><br></div><div>Thanks in advance <br><br></div><div>Sanjib </div></div></blockquote><br></div><div>Hi Sanjib,</div><div><br></div><div>What happens when you remove the “-kernel” parameter? Does it boot properly? If it does, then I think your kernel's .config needs more work. You may have to do a little exploration to see what kernel parameters you need.</div><div><br></div><div>-Glenn</div></body></html>