Re: KVM-74: HELP PLEASE - cannot boot from cdrom for recovery

Gerry Reno
2009-03-31T23:41:36Z

Gerry Reno wrote:
> Gerry Reno wrote:
>> Javier Guerra wrote:
>>> On Tue, Mar 31, 2009 at 5:52 PM, Gerry Reno <greno@verizon.net> wrote:
>>>
>>>> Ok, I've been working with this for a couple hours but this command
>>>> line
>>>> errors on F10 like this:
>>>>
>>>> # /usr/bin/qemu-kvm -S -M pc -m 512 -smp 2 -name MX_3 -monitor pty
>>>> -boot d
>>>> -drive
>>>> file=/var/vm/vm1/qemu/images/MX_3/MX_3.img,if=ide,index=0,boot=on
>>>> -cdrom /dev/sr0 -net nic,macaddr=00:0c:29:e3:bc:ee,vlan=0 -net
>>>> tap,fd=17,script=,vlan=0,ifname=vnet1 -serial none -parallel none
>>>> -usb -vnc
>>>> 127.0.0.1:1 -k en-us
>>>> TUNGETIFF ioctl() failed: Bad file descriptor
>>>> char device redirected to /dev/pts/2
>>>>
>>>> What does this error mean?
>>>>
>>>
>>> ah, i didn't notice the "fd=17" in the "-net" parameter.
>>>
>>> to make it simple, first try with userspace network:
>>>
>>> qemu-kvm -m 512 -hda /var/vm/vm1/qemu/images/MX_3/MX_3 -cdrom /dev/sr0
>>> -boot d -vnc 127.0.0.1
>>>
>>>
>>>
>> Ok, I ran this line:
>>
>> qemu-kvm -m 512 -hda /var/vm/vm1/qemu/images/MX_3/MX_3.img -cdrom
>> /dev/sr0 -boot d -vnc 127.0.0.1:1
>>
>> And it started the VM but I cannot connect to it for some reason.
>>
>> The error:
>> $ vncviewer
>> Rect too big: 5x3584 at 10,0 exceeds 720x400
>>
>> Have you ever seen this?
>> I don't know what's causing this but it seems like a really weird
>> size. I'm still working on this error... Is there a way to tell
>> vncviewer to connect anyway?
>>
> Ok, the third try the window came up. And it is showing the same 0003
> error as before on the cdrom boot.
> I have no clue what is causing this error. I've turned off selinux,
> I've made sure the disk is in drive and mounted. There just seems to
> be some access problem to the cdrom device from a root owned process.
>
Nope, it's not just root. I tried as the desktop user and same result:

$ qemu-kvm -m 512 -hda /var/vm/vm1/qemu/images/MX_3/MX_3.img -cdrom
/dev/sr0 -boot d -vnc 127.0.0.1:1
open /dev/kvm: Permission denied
Could not initialize KVM, will disable KVM support

Console show:
Boot Failure Code: 0003
Boot from CDROM failed: cannot read the boot disk.
FATAL: No bootable device.

Regards,
Gerry