Package: debian-installer-9-netboot-amd64 Severity: wishlist Tags: d-i Dear Maintainer,
while automating Debian image creations thru netinst + KVM, I stumbled upon a limitation from the emulated UARTs (if one sends back from the guest to the host large logs, it might overrun the UART buffer which complains with kernel messages about overused IRQ). While turning to paravirtualized serial, I realized that the char/virtio_console kernel module is missing in the netinst's initrd, and this driver is required very early. Obviously I still use the UART emulation for kernel messages since it's the only _very early_ output medium, thus emulated UART and paravirtualized serials should be used together. If this module makes it to netinst's initrd, one would use those kvm args: -chardev file,path=virtiocon0.log,id=virtiocon0 -device virtio-serial -device virtconsole,chardev=virtiocon0 ... and in the guest a /dev/hvc0 would appear. Anything the guest would write to /dev/hv0 would en up in the host's vitriocon0.log file. -- System Information: Debian Release: 9.4 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 4.16.0-0.bpo.2-amd64 (SMP w/4 CPU cores) Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), LANGUAGE=en_US:en (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Init: systemd (via /run/systemd/system) debian-installer-9-netboot-amd64 depends on no packages. debian-installer-9-netboot-amd64 recommends no packages. Versions of packages debian-installer-9-netboot-amd64 suggests: pn tftpd-hpa <none>
