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| author | Tuomas Tynkkynen <tuomas@tuxera.com> | 2018-04-28 12:48:06 +0300 |
|---|---|---|
| committer | Tuomas Tynkkynen <tuomas@tuxera.com> | 2018-04-28 12:48:06 +0300 |
| commit | dda74d9e50dbd8a412de743a53e9cfd585407342 (patch) | |
| tree | fc0fc8620b69fe1376e43a57337bb7b5e56b073c /nixos | |
| parent | 6078f01969e8e704f44965a97730f95634887ca2 (diff) | |
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nixos/qemu-vm: Always add a virtio RNG device to the quest
mke2fs has this annoying property that it uses getrandom() to get random numbers (for whatever purposes) which blocks until the kernel's secure RNG has sufficient entropy, which it usually doesn't in the early boot (except if your CPU supports RDRAND) where we may need to create the root disk. So let's give the VM a virtio RNG to avoid the boot getting stuck at mke2fs.
Diffstat (limited to 'nixos')
| -rw-r--r-- | nixos/modules/virtualisation/qemu-vm.nix | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/nixos/modules/virtualisation/qemu-vm.nix b/nixos/modules/virtualisation/qemu-vm.nix index 2b78276fcde..3d4bd315f81 100644 --- a/nixos/modules/virtualisation/qemu-vm.nix +++ b/nixos/modules/virtualisation/qemu-vm.nix @@ -77,6 +77,7 @@ let -name ${vmName} \ -m ${toString config.virtualisation.memorySize} \ -smp ${toString config.virtualisation.cores} \ + -device virtio-rng-pci \ ${concatStringsSep " " config.virtualisation.qemu.networkingOptions} \ -virtfs local,path=/nix/store,security_model=none,mount_tag=store \ -virtfs local,path=$TMPDIR/xchg,security_model=none,mount_tag=xchg \ |