[SOLVED] VirtManager: Error in creating storage volume.

[SilverFox21]

Hey, y'all. I'm playing with VirtManager (KVM/QEMU) for the first time. I'm trying to install a Windows 11 virtual machine. The setup is going fine until trying to create the storage volume; I want to place it in my documents folder in a folder labeled "Win11." When I do this, I get this error message:

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Error creating vol: Couldn't create storage volume 'win11.qcow2': 'internal error: 
Child process (/usr/bin/qemu-img create -f qcow2 -b /home/mark/Downloads/Win11 -o backing_fmt=raw,
compat=1.1,lazy_refcounts /var/lib/libvirt/images/pool/win11.qcow2 20971520K) unexpected exit status 1: 
qemu-img: /var/lib/libvirt/images/pool/win11.qcow2: 'file' driver requires '/home/mark/Downloads/Win11' to be a regular file
Could not open backing image.

Since this is my first time in working with VirtManager, I need help. Where did I go wrong? And what is the fix?

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System:
  Kernel: 6.1.0-18-amd64 arch: x86_64 bits: 64 compiler: gcc v: 12.2.0 Desktop: Cinnamon v: 6.0.4
    tk: GTK v: 3.24.38 wm: muffin dm: LightDM Distro: LMDE 6 Faye base: Debian 12.1 bookworm
Machine:
  Type: Desktop System: ASUS product: N/A v: N/A serial: <superuser required>
  Mobo: ASUSTeK model: TUF GAMING B550M-PLUS (WI-FI) v: Rev X.0x serial: <superuser required>
    UEFI: American Megatrends v: 1202 date: 10/22/2020
Battery:
  Device-1: hidpp_battery_0 model: Logitech Wireless Mouse M510 serial: <filter>
    charge: 55% (should be ignored) status: discharging
  Device-2: hidpp_battery_1 model: Logitech Wireless Keyboard ERGO K860 serial: <filter>
    charge: 100% (should be ignored) status: discharging
CPU:
  Info: 8-core model: AMD Ryzen 7 5800X bits: 64 type: MT MCP arch: Zen 3+ rev: 0 cache:
    L1: 512 KiB L2: 4 MiB L3: 32 MiB
  Speed (MHz): avg: 2301 high: 3606 min/max: 2200/4850 boost: enabled cores: 1: 2053 2: 2053
    3: 3606 4: 2200 5: 2200 6: 2200 7: 2200 8: 2200 9: 2200 10: 2059 11: 3596 12: 2054 13: 2051
    14: 2053 15: 2051 16: 2048 bogomips: 121372
  Flags: avx avx2 ht lm nx pae sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm
Graphics:
  Device-1: AMD Navi 22 [Radeon RX 6700/6700 XT/6750 XT / 6800M/6850M XT] vendor: Gigabyte
    driver: amdgpu v: kernel arch: RDNA-2 pcie: speed: 16 GT/s lanes: 16 ports: active: HDMI-A-2
    empty: DP-1,DP-2,HDMI-A-1 bus-ID: 0a:00.0 chip-ID: 1002:73df
  Display: x11 server: X.Org v: 1.21.1.7 with: Xwayland v: 22.1.9 driver: X: loaded: amdgpu
    unloaded: fbdev,modesetting,radeon,vesa dri: radeonsi gpu: amdgpu display-ID: :0 screens: 1
  Screen-1: 0 s-res: 1920x1080 s-dpi: 96
  Monitor-1: HDMI-A-2 mapped: HDMI-A-1 model: CR270C res: 1920x1080 dpi: 82 diag: 686mm (27")
  API: OpenGL v: 4.6 Mesa 22.3.6 renderer: AMD Radeon RX 6750 XT (navi22 LLVM 15.0.6 DRM 3.49
    6.1.0-18-amd64) direct-render: Yes
Audio:
  Device-1: AMD Navi 21/23 HDMI/DP Audio driver: snd_hda_intel v: kernel pcie: speed: 16 GT/s
    lanes: 16 bus-ID: 0a:00.1 chip-ID: 1002:ab28
  Device-2: AMD Starship/Matisse HD Audio vendor: ASUSTeK driver: snd_hda_intel v: kernel pcie:
    speed: 16 GT/s lanes: 16 bus-ID: 0c:00.4 chip-ID: 1022:1487
  API: ALSA v: k6.1.0-18-amd64 status: kernel-api
  Server-1: JACK v: 1.9.21 status: off
  Server-2: PipeWire v: 0.3.65 status: active with: 1: pipewire-pulse status: active
    2: wireplumber status: active 3: pipewire-alsa type: plugin
Network:
  Device-1: Broadcom NetXtreme II BCM5709 Gigabit Ethernet driver: bnx2 v: kernel pcie:
    speed: 2.5 GT/s lanes: 4 port: N/A bus-ID: 04:00.0 chip-ID: 14e4:1639
  IF: enp4s0f0 state: down mac: <filter>
  Device-2: Broadcom NetXtreme II BCM5709 Gigabit Ethernet driver: bnx2 v: kernel pcie:
    speed: 2.5 GT/s lanes: 4 port: N/A bus-ID: 04:00.1 chip-ID: 14e4:1639
  IF: enp4s0f1 state: down mac: <filter>
  Device-3: Intel Wi-Fi 6 AX200 driver: iwlwifi v: kernel pcie: speed: 5 GT/s lanes: 1
    bus-ID: 06:00.0 chip-ID: 8086:2723
  IF: wlp6s0 state: up mac: <filter>
  Device-4: Realtek RTL8125 2.5GbE vendor: ASUSTeK driver: r8169 v: kernel pcie: speed: 5 GT/s
    lanes: 1 port: f000 bus-ID: 07:00.0 chip-ID: 10ec:8125
  IF: enp7s0 state: up speed: 1000 Mbps duplex: full mac: <filter>
Bluetooth:
  Device-1: Intel AX200 Bluetooth type: USB driver: btusb v: 0.8 bus-ID: 1-5:4 chip-ID: 8087:0029
  Report: hciconfig ID: hci0 rfk-id: 0 state: up address: <filter> bt-v: 3.0 lmp-v: 5.2
    sub-v: 200f
Drives:
  Local Storage: total: 4.09 TiB used: 891.44 GiB (21.3%)
  ID-1: /dev/nvme0n1 vendor: Western Digital model: WDBRPG0010BNC-WRSN size: 931.51 GiB
    speed: 31.6 Gb/s lanes: 4 serial: <filter> temp: 42.9 C
  ID-2: /dev/nvme1n1 vendor: Western Digital model: WD BLACK SN850 1TB size: 931.51 GiB
    speed: 63.2 Gb/s lanes: 4 serial: <filter> temp: 40.9 C
  ID-3: /dev/sda vendor: Western Digital model: WD10EZEX-22MFCA0 size: 931.51 GiB speed: 6.0 Gb/s
    serial: <filter>
  ID-4: /dev/sdb vendor: Western Digital model: WDBNCE5000PNC size: 465.76 GiB speed: 6.0 Gb/s
    serial: <filter>
  ID-5: /dev/sdc vendor: Western Digital model: WDBNCE0010PNC size: 931.51 GiB speed: 6.0 Gb/s
    serial: <filter>
Partition:
  ID-1: / size: 883.82 GiB used: 43.85 GiB (5.0%) fs: ext4 dev: /dev/dm-0 mapped: lvmlmde-root
  ID-2: /boot/efi size: 285.4 MiB used: 5.8 MiB (2.0%) fs: vfat dev: /dev/nvme0n1p1
Swap:
  Alert: No swap data was found.
Sensors:
  System Temperatures: cpu: 38.2 C mobo: N/A gpu: amdgpu temp: 41.0 C mem: 36.0 C
  Fan Speeds (RPM): N/A gpu: amdgpu fan: 0
Repos:
  Packages: 6371 pm: dpkg pkgs: 3154 pm: rpm pkgs: N/A note: see --rpm pm: flatpak pkgs: 63
  No active apt repos in: /etc/apt/sources.list
  Active apt repos in: /etc/apt/sources.list.d/official-package-repositories.list
    1: deb http: //packages.linuxmint.com faye main upstream import backport
    2: deb https: //deb.debian.org/debian bookworm main contrib non-free non-free-firmware
    3: deb https: //deb.debian.org/debian bookworm-updates main contrib non-free non-free-firmware
    4: deb http: //security.debian.org/ bookworm-security main contrib non-free non-free-firmware
    5: deb https: //deb.debian.org/debian bookworm-backports main contrib non-free non-free-firmware
  No active dnf repos in: /etc/dnf/dnf.conf
Info:
  Processes: 392 Uptime: 2h 0m Memory: 31.23 GiB used: 3.17 GiB (10.1%) Init: systemd v: 252
  target: graphical (5) default: graphical Compilers: gcc: 12.2.0 alt: 12 Client: Unknown
  python3.11 client inxi: 3.3.26

[dave0808]

I'm not expert with VirtManager but I do use it as my VM system.

The error you include shows that it's trying to create a new storage volume based on an existing one. This doesn't match the description that you give. When you create the new VM, are you selecting the option to "Import existing disk image" ??

If not, then this is what I do:-

1. Choose Local install media
2. Pick the ISO image. I have a "pool" that points to all my ISO images, so I select the pool on the left, then the ISO from the list that shows up on the right.
3. Check the OS is detected, else set it yourself, then press Forward
4. Set memory & CPU, press Forward
5. Now for the storage. Like you, I don't want it using space on the main system partition, so I click on "Select or create custom storage", then "Manage..."
6. In the storage volume dialog, I first created a new pool, which was set to the directory where I want to store the storage volumes. In your case, you'd pick your Documents directory. Give it a suitable name, press Finish.
7. Now with your pool selected on the left, click the + button to the right, next to "Volumes". Check the name, format, and size. Leave the "Backing Store" empty. I don't check "Allocate entire volume now". I'm sure there are times where this option is useful but I've never needed it. Press Finish. It should be pretty quick and will return to the "storage volume" dialog.
8. Select your newly created volume and press the "Choose Volume" dialog. Then press Forward.
9. Now you can tweak the config or just press Finish to create the VM.

[SilverFox21]

Dave88, thanks for the info. I will try your steps in a few days when I can get off my back (I had a procedure done today).

[SilverFox21]

Dave0808, thanks for the step-by-step directions. It worked perfectly.
God Bless,
SilverFox21

[dave0808]

Thanks for reporting back and marking the topic as solved.