assuming the kvm hypervisor and host system are up and running already
boostrapping slackware on a full-blown vdisk (not just a partition image for once)
we need pkgtools so we’re able to brutally install slackware it a debian/ubuntu kvm host
– however it overrides the sbin -> usr/sbin symlink so we’re extracting the package elsewhere
mirror=...
lftp -c "open $mirror/slackware64/a/; mget pkgtools-*.txz"
mkdir /var/tmp/pkgtools/
tar xaf pkgtools-*.txz -C /var/tmp/pkgtools/
mv -f /var/tmp/pkgtools/sbin/* /usr/local/sbin/
grep 21 /etc/group
groupdel fax
groupadd -g 21 slocate
grep ^slocate /etc/group
also if evern you proceed manually, be careful to always run installpkg with a chroot defined
installpkg --terse --root lala/ SOME-PACKAGE.txz
we use SYSLINUX / EXTLINUX against the guest virtual disk from the host
apt install syslinux
assuming you got virbr0 bridge up and running
KVM requires a boot-loader hence a full virtual disk – also we need QCOW2 not a self-made sparse file for GNS3 guest template not to copy the entire thing…
as root
guest=slack150
mkdir -p /data/guests/$guest/lala/
cd /data/guests/$guest/
qemu-img create -f qcow2 $guest.qcow2 25G
modprobe nbd max_part=8
qemu-nbd --connect=/dev/nbd0 $guest.qcow2
fdisk /dev/nbd0
n
p
ENTER
ENTER
ENTER
a
w
mkfs.ext4 /dev/nbd0p1
mount /dev/nbd0p1 lala/
from the KVM host directly
make sure you include a kernel in the image (more details)
# https://pub.nethence.com/bin/slack/slackstrap.bash ../slackstrap.bash lala/ $mirror ../slackstrap.bash lala/ $mirror kernel
this is not enough for syslinux to be happy (probably fstab is required)
# https://pub.nethence.com/bin/slack/slackpost.bash ../slackpost.bash $guest $mirror lala/
and eventually proceed with a brutal network setup
# https://pub.nethence.com/bin/slack/slackbrutal.bash.txt
../slackbrutal.bash 192.168.122.9/24 192.168.122.1 $guest ~USER/.ssh/id_ed25519.pub
setup the kvm guest boot-loader and kernel-time serial console
dd if=/usr/lib/syslinux/mbr/mbr.bin of=/dev/ndb0
mkdir lala/boot/syslinux/
extlinux --install lala/boot/syslinux/ --device /dev/nbd0p1
cp -f /usr/lib/syslinux/modules/bios/mboot.c32 lala/boot/syslinux/
cp -f /usr/lib/syslinux/modules/bios/libcom32.c32 lala/boot/syslinux/
vi lala/boot/syslinux/syslinux.cfg
serial 0 115200
console 1
nohalt 1
default linux
prompt 1
timeout 30
label linux
linux /boot/vmlinuz
append root=/dev/vda1 ro console=ttyS0,115200n8 mitigations=off
umount lala/ rmdir lala/ #dumpe2fs -i /dev/nbd0p1 #dumpe2fs -h /dev/nbd0p1 #fsck.ext4 -f /dev/nbd0p1
qemu-nbd --disconnect /dev/nbd0 ls -lhF $guest.qcow2 # 2.0G dh -sh $guest.qcow2 # 2.0G
choose a decent machine type (q35 is newer and supposedly better/simplier)
qemu-system-x86_64 -machine help | grep PC pc Standard PC (i440FX + PIIX, 1996) (alias of pc-i440fx-6.2) q35 Standard PC (Q35 + ICH9, 2009) (alias of pc-q35-6.2)
new UUID and MAC address will be generated on the fly
cat > $guest.xml <<EOF
<domain type='kvm'>
<name>$guest</name>
<memory unit='MiB'>512</memory>
<vcpu placement='static'>2</vcpu>
<os>
<type arch='x86_64' machine='q35'>hvm</type>
<boot dev='hd'/>
</os>
<devices>
<emulator>/usr/bin/qemu-system-x86_64</emulator>
<disk type='file' device='disk'>
<driver name='qemu' type='qcow2'/>
<source file='/data/guests/$guest/$guest.qcow2'/>
<target dev='vda' bus='virtio'/>
</disk>
<interface type='bridge'>
<source bridge='virbr0'/>
<model type='virtio'/>
</interface>
<serial type='pty'>
<target type='isa-serial' port='0'>
<model name='isa-serial'/>
</target>
</serial>
<console type='pty'>
<target type='serial' port='0'/>
</console>
</devices>
</domain>
EOF
virsh create /data/guests/$guest/$guest.xml --console TAB --> to get the chance to see the syslinux prompt (login) ping -c1 opendns.com ^]
clone the machine already
poweroff
cd ../
cp -R --sparse=always slack/ slack-clone/
vi slack-clone/slack.xml
<name>slack-clone</name>
<source file='/data/guests/slack-clone/slack.img'/>
du -sh slack*/
and proceed
virsh create slack-clone/slack.xml virsh console slack-clone vi /etc/HOSTNAME vi /etc/hosts vi /etc/rc.d/rc.inet1 (change static ip) reboot ping -c1 opendns.com ^]
virsh list # should NOT run
losetup -a # already mapped?
losetup --find --partscan --show $guest.img
fsck /dev/loop3p1
mount /dev/loop3p1 lala/
... umount -R lala/ losetup --detach /dev/loop3
"Error: AppArmor parser not found" ERROR: Can't find apparmor_parser at /sbin/apparmor_parser
–> /sbin is a symlink since focal, did you mess it up by installing pkgtools?…
(nothing shows up on console output)
==> do not forget to run slackpost after slackstrap – probably fstab was missing
QemuKVMMigration https://wiki.ubuntu.com/QemuKVMMigration
QEMU Unsupported Machine Type ‘pc-q35-3.1’ https://forum.level1techs.com/t/qemu-unsupported-machine-type-pc-q35-3-1/140084
How can I change Qemu KVM machine architecture from 440fx to q35 with virsh edit or virt-manager https://serverfault.com/questions/637917/how-can-i-change-qemu-kvm-machine-architecture-from-440fx-to-q35-with-virsh-edit