kvm command line as generated by libvirt-bin
/usr/bin/kvm -S -M pc-0.11 -enable-kvm -m 1024 -smp
2,sockets=2,cores=1,threads=1 -name BT -uuid 7e4c5cc4-f077-e52e-6d2d-
f865637e87df -nodefaults -chardev
socket,id=monitor,path=/var/lib/libvirt/qemu/BT.monitor,server,nowait
-mon chardev=monitor,mode=readline -rtc base=utc -boot cd -device
lsi,id=scsi0,bus=pci.0,addr=0x6 -drive file=/local/vimages/isos/ubuntu
/lucid-alternate-amd64.iso,if=none,media=cdrom,id=drive-ide0-1-0 -device
ide-drive,bus=ide.1,unit=0,drive=drive-ide0-1-0,id=ide0-1-0 -drive
file=/dev/greasy-vg/bt,if=none,id=drive-virtio-disk0,boot=on,format=raw
-device virtio-blk-pci,bus=pci.0,addr=0x7,drive=drive-virtio-disk0,id
=virtio-disk0 -device
e1000,vlan=0,id=net0,mac=54:52:00:33:9c:2d,bus=pci.0,addr=0x4 -net
tap,fd=46,vlan=0,name=hostnet0 -chardev pty,id=serial0 -device isa-
serial,chardev=serial0 -usb -vnc 127.0.0.1:0 -k en-us -vga cirrus
-device ES1370,id=sound0,bus=pci.0,addr=0x5 -device virtio-balloon-
pci,id=balloon0,bus=pci.0,addr=0x3
Some history and quirks.
1) This system has had the virtual disk swapped to SCSI and back to
virtio.
2) grub-pc postinst fails after a switch from SCSI to virtio with cannot find
/dev/disk/by-id/....
(There is *NO* /dev/disk/by-id with virtio)
3) After purging grub-pc and reinstalling it, the postinst can no longer
find a disk where grub should be installed.
4) grub-install --recheck /dev/vda works just fine
Thoughts.
1) udev persistent storage rules probably need to match the [vs]d*[!0-9]
wildmat instead of sd*[!0-9].
2) Until udev is fixed, it would be pleasant if grub-pc.postinst would fallback
to /dev/disk/by-uuid.
I think this does it.
available_ids()
{
local id path diskby
if [ "$cached_available_ids" ]; then
echo "$cached_available_ids"
return
fi
for diskby in /dev/disk/by-id /dev/disk/by-uuid; do
[ -d "$diskby" ] && break
done
cached_available_ids="$(
for path in "$diskby"/* ; do
[ -e "$path" ] || continue
printf '%s %s\n' "$path" "$(readlink -f "$path")"
done | sort -k2 -s -u | cut -d' ' -f1
)"
echo "$cached_available_ids"
}
3) Yes, I know testing is a pain, but it's probably worth checking that install
works with kvm with all three possible ways of providing disk.
--
Lucid Alpha 2 server iso install fails at bootloader in KVM
https://bugs.launchpad.net/bugs/524434
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