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

[Gerry Reno <greno@verizon.net>]

Gerry Reno wrote:
> Tomasz Chmielewski wrote:
>> Gerry Reno schrieb:
>>
>>>> What does:
>>>>
>>>> md5sum /dev/sr0
>>>>
>>>> output?
>>>>
>>>>
>>> DVD is Fedora 10 DVD (i386)
>>>
>>> Four cases:
>>>
>>> # desktop user; DVD unmounted
>>> $ md5sum /dev/sr0
>>> md5sum: /dev/sr0: Input/output error
>>>
>>> # desktop user; DVD mounted
>>> $ md5sum /dev/sr0
>>> ff311b322c894aabc4361c4e270f5a3f  /dev/sr0
>>
>> Download the iso file to your disk and point kvm there.
>>
>> It's the easiest to do; your problem is not really kvm-specific.
>>
>>
> I'll try that but it seems as though the process being owned by root 
> is preventing the access to the cdrom.  So isn't that kvm?  Does 
> libvirt know this?  I mean never once have we been able to use the 
> cdrom from the VM.  Not just for this problem.  This seems to be some 
> kind of access problem.
>
>
Ok, using an F10 ISO file when get access denied error when trying to 
define the domain.  So I did this:  chcon -t virt_image_t F10-ISO-FILE 
and now the domain defines ok.  BUT, even then using the ISO file we 
still get the same error message as always:
Boot Failure Code:  0003
Boot from CDROM failed:  cannot read the boot disk.
FATAL: No bootable device.


The host runs with SELinux targeted enforce.  So thinking this might be 
an selinux issue I set 'setenforce 0' to put it into permissive mode but 
it made no difference.  Still the same boot error.
Boot Failure Code:  0003
Boot from CDROM failed:  cannot read the boot disk.
FATAL: No bootable device.

Regards,
Gerry