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I am trying to boot a custom Linux kernel using QEMU and encountering an issue where the boot process hangs with a dracut-initqueue timeout. I compiled the kernel using a .config file from a Fedora VM and also copied the initrd.img from the same VM.

QEMU Command:

Here's the QEMU command I am using to boot the VM:

qemu-system-x86_64 -enable-kvm -nographic -vga none -smp 1 -m 2G -kernel arch/x86_64/boot/bzImage -initrd initrd.img -append "root=/dev/sysvg/root console=ttyS0" -device virtio-blk-pci,drive=rootdisk -drive file=Fedora-Server-KVM-38-1.6.x86_64.qcow2,if=none,cache=none,id=rootdisk,format=qcow2 -device virtio-blk-pci,drive=extradisk -drive file=fedoradisk.qcow2,if=none,cache=none,id=extradisk,format=qcow2 -net nic,model=virtio -net user,hostfwd=tcp::5555-:22

Error Message:

During boot, I get the following error:

Warning: dracut-initqueue: starting timeout scripts
[  134.151378] dracut-initqueue[307]: Warning: dracut-initqueue: timeout, still waiting for following initqueue hooks:
[  134.153530] dracut-initqueue[307]: Warning: /lib/dracut/hooks/initqueue/finished/devexists-\x2fdev\x2fsysvg\x2froon
[  134.155238] dracut-initqueue[307]:     [ -e "/dev/sysvg/root" ]

Disk Information:

I used guestfish to inspect the QCOW2 image and got the following output:

/dev/sda1: unknown
/dev/sda2: ext4
/dev/sysvg/root: xfs

It seems like the root filesystem /dev/sysvg/root does exist in the disk image, but dracut-initqueue is unable to find it.

Questions:

  1. What could be causing this dracut-initqueue timeout?
  2. How can I debug this issue further to find the root cause?
  3. Are there any specific kernel configurations that I might be missing?

Any help would be greatly appreciated!

I have taken the following steps to troubleshoot the issue:

  1. Compiled a Custom Kernel: I compiled a custom Linux kernel using a .config file from a Fedora VM. I was expecting this kernel to boot successfully since it was configured based on a working VM.

  2. Copied initrd.img: I also copied the initrd.img from the same Fedora VM, expecting it to contain all the necessary drivers and configurations for booting.

  3. Used QEMU for Virtualization: I used QEMU to boot the VM with the custom kernel and initrd.img. I specified the root filesystem as /dev/sysvg/root based on the disk layout.

  4. Checked Disk Layout with guestfish: I used guestfish to inspect the QCOW2 image and confirmed that /dev/sysvg/root does exist and is of type xfs.

  5. Checked Kernel Messages: I reviewed the kernel messages during boot but didn't find any obvious issues related to disk detection.

I was expecting the VM to boot successfully into the Fedora system with the custom kernel. However, I am encountering a dracut-initqueue timeout error, specifically complaining that it can't find /dev/sysvg/root.

isomorphik
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