[virt-tools-list] Error when adding CD-ROM drives to a Q35 machine (and a workaround and a feature request)

Cole Robinson crobinso at redhat.com
Mon Feb 9 12:39:18 UTC 2015


On 02/08/2015 03:40 PM, Gizmo Chicken wrote:
> When creating a Windows 7 guest on a Q35 machine, I attempted to add
> one VirtIO data drive for the guest OS, one CD-ROM drive for the
> installation media and a second CD-ROM drive for the VirtIO drivers
> that must be installed prior to installing Windows 7 on a VirtIO
> drive. Unfortunately, when hitting “begin installation” I received an
> error message. (See below for details.)
> 
> In essence, the error message says that I had attempted to exceed the
> maximum number of drives permitted for one IDE bus. (Actually, more
> drives could be added to the single bus, but not in the way
> virt-manager attempts to add them.)
> 
> So I added a SATA bus and I tried to add the additional CD-ROMs to
> that SATA bus, but couldn't find an explicit option to do so directly.
> 
> Finally, after first adding the IDE CD-ROMs (but before hitting “begin
> installation”), I went to “advanced options” for each CD-ROM and typed
> “sata” (in lower case, without the quotes) next to “Disk bus” (in
> place of IDE) for each CD-ROM, and then hit “begin installation” to
> create the guest. Doing so allowed me to add two SATA CD-ROMs to a Q35
> machine using virt-manager.
> 
> FEATURE REQUEST: Please provide a more direct means for adding SATA
> CD-ROM drives when creating a guest machine. And ideally, SATA CD-ROMs
> should be the default when using a Q35 machine.
> 

Please file a virt-manager bug report for this, so it isn't lost on the
mailing list:

http://virt-manager.org/bugs/

- Cole




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