Hi Pavel, thanks for the quick response!
1. Installed versions: - Host: KDE neon 5.10 (based on Ubuntu 16.04.1) - Guest: Linux Mint 18.2 Cinnamon - virt-manager: 1:1.4.2-1~getdeb1 - libvirt: 1.3.1-1ubuntu10.12 - qemu: 1:2.5+dfsg-5ubuntu10.14 - kernel: 4.10.0-32-generic 2. I have set a sorage size of 100 GB with qcow2 and my host reports 100 GB. I have also created some test disks with other formats to check how they behave: - qcow2: max: 2 GB - actual size: 2 GB - qcow: allocate 1 GB, max: 2 GB - actual size: 8.5 KB - vdi: allocate 1 GB, max: 2 GB - actual size: 8.5 KB - vmdk: allocate 1 GB, max: 2 GB - actual size: 320 KB - raw: allocate 1 GB, max: 2 GB - actual size: 2 GB Nick On Sat, Aug 19, 2017 at 4:07 PM, Pavel Hrdina <[email protected]> wrote: > On Sat, Aug 19, 2017 at 03:32:58PM +0200, Nick Gilmour wrote: > > Hi all, > > > > I have just installed KVM, QEMU and Virtual Machine Manager and created a > > VM with Linux Mint 18.2 on it. Everything looks good except 2 things: > > Hi, can you please share with us what OS are you using and versions of > virt-manager, libvirt, qemu and kernel packages? > > > 1. The graphics driver is apparently not working properly. I have tried > all > > of them incl. QXL, VMVGA ( with Virtio I get error: virtio-gpu 3d > > accelaration is not supported) but I always get this popup message > "running > > in software rendering mode". Besides that, I there is no option to rotate > > the display. How can I fix this? > > The preferred video devices are QXL or virtio, you should be able to > disable 3D acceleration for virtio-gpu. If you follow this guide [1], > it should be possible to enable 3D acceleration. > > > 2. As far as I have read the difference between qcow2 and qcow storage > > format is that qcow2 is a successor of qcow. When I choose qcow2 there is > > no option for max size i.e. it has a fixed size. Is this correct? Is > qcow2 > > for fixed size and qcow for dynamic size? > > The qcow2 is in most cases the best choice. The reason why there is > only one size option is because how qcow2 format works. If you set for > example 50G, it will not allocate 50G on your disk. The file itself > will be only few KB large. It will grow automatically with the usage. > > Pavel > > [1] <https://www.kraxel.org/blog/tag/virtio-gpu/> >
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