Dear OBS team, at Osmocom, we are building a number of packages each night. Last night, we encounter massive build failures, with tons of packages failing to build on dpkg distributions. They all fail with "Can't mount root filesystem", as can be seen in the snippet below: [ 9s] ### VM INTERACTION START ### [ 9s] Using UART console [ 9s] /usr/bin/qemu-kvm -nodefaults -no-reboot -nographic -vga none -cpu host -object rng-random,filename=/dev/random,id=rng0 -device virtio-rng-pci,rng=rng0 -runas qemu -net none -kernel /boot/kernel.obs.guest -initrd /boot/initrd.obs.guest -append root=/dev/disk/by-id/virtio-0 rootfstype=ext3 rootflags=data=writeback,nobarrier,commit=150,noatime ext4.allow_unsupported=1 mitigations=off panic=1 quiet no-kvmclock elevator=noop nmi_watchdog=0 rw rd.driver.pre=binfmt_misc console=ttyS0 init=/.build/build -m 8192 -drive file=/var/cache/obs/worker/root_12/root,format=raw,if=none,id=disk,cache=unsafe -device virtio-blk-pci,drive=disk,serial=0 -drive file=/var/cache/obs/worker/root_12/swap,format=raw,if=none,id=swap,cache=unsafe -device virtio-blk-pci,drive=swap,serial=1 -serial stdio -chardev socket,id=monitor,server,nowait,path=/var/cache/obs/worker/root_12/root.qemu/monitor -mon chardev=monitor,mode=readline -smp 8 [ 9s] c[?7l[2J[0mSeaBIOS (version rel-1.14.0-0-g155821a-rebuilt.opensuse.org) [ 15s] Booting from ROM..c[?7l[2J[ 5.378108] dracut-mount[367]: Warning: Can't mount root filesystem We're seeing this for * Debian 8, 9, 10, Testing, Unstable * Ubuntu 18.04, 19.04, 19.10, 20.04, 20.10 See for example https://build.opensuse.org/package/live_build_log/network:osmocom:nightly/li... I would expect this is a generic problem, and not with one specific build slave/node only, as it happens to a number of packages, also when re-triggered. I'd assume chances are low that all those builds and re-builds always end up on one specific broken slave. Any help is appreciated. Thanks! -- - Harald Welte <laforge@gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)