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Re: [vfio-users] setting up virtual disks



On 03/28/17 02:04, Alex Williamson wrote:
> On Mon, Mar 27, 2017 at 5:46 PM, Stibnite <stibnite protonmail com> wrote:
> 
>>
>> I'm trying to setup a disk passthrough on virt-manager using the guide
>> outlined  but the disk device does not appear in the windows installation
>> window. I'm sure i'm missing something obvious but i can't seem to get it
>> working.  https://access.redhat.com/documentation/en-US/Red_Hat_
>> Enterprise_Linux/6/html/Virtualization_Administration_
>> Guide/sect-Virtualization-Adding_storage_devices_to_
>> guests-Adding_hard_drives_and_other_block_devices_to_a_guest.html
>>
>> here's an excerpt of my xml file.
>>
>> <devices>
>>     <emulator>/usr/sbin/qemu-system-x86_64</emulator>
>>     <disk type='file' device='disk'>
>>       <driver name='qemu' type='raw'/>
>>       <source file='/mnt/australia/Downloads/ISO/win10-2.qcow2'/>
>>       <target dev='hda' bus='ide'/>
>>       <boot order='3'/>
>>       <address type='drive' controller='0' bus='0' target='0' unit='0'/>
>>     </disk>
>>     <disk type='file' device='cdrom'>
>>       <driver name='qemu' type='raw'/>
>>       <source file='/mnt/australia/Downloads/ISO/en-gb_windows_
>> 10_enterprise_x64_dvd_6851157.iso'/>
>>       <target dev='hdb' bus='ide'/>
>>       <readonly/>
>>       <boot order='1'/>
>>       <address type='drive' controller='0' bus='0' target='0' unit='1'/>
>>     </disk>
>>     <disk type='block' device='disk'>
>>       <driver name='qemu' type='raw' cache='none'/>
>>       <source dev='/dev/sdc1'/>
>>       <target dev='hdf' bus='virtio'/>
>>       <boot order='2'/>
>>       <address type='pci' domain='0x0000' bus='0x00' slot='0x08'
>> function='0x0'/>
>>     </disk>
>>
> 
> 
> Windows doesn't ship with virtio drivers, just like it doesn't ship with
> drivers for various other one-off storage controllers.  You'll need to
> install drivers for the disk on the virtio controller to show up
> https://fedoraproject.org/wiki/Windows_Virtio_Drivers

I recommend the following setup:

- hard disk(s):          virtio-blk or virtio-scsi disk, as you prefer
- Windows installer ISO: virtio-scsi CD-ROM
- virtio-win driver ISO: *separate* IDE CD-ROM (or SATA, if you use Q35)

Windows installation will proceed off of the virtio-scsi CD-ROM far
enough for you to select the *other* (IDE or SATA) CD-ROM, with the
virtio-win drivers, for loading drivers into the installer.

After which point the Windows installer will see both the destination
hard disk, and the installer CD-ROM (again).

Search the Wiki article referenced by Alex for the string

  virtio-win iso

under "Direct download". The ISO image linked there is what you need for
the above method.

Thanks
Laszlo


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