verified noble-proposed successfully 1, Use noble squashfs (/var/snap/mas/common/mas/image storage/5f64c83) in MAAS to create noble rootfs
ssh -J hua@x99 [email protected] 'sudo cat /var/snap/maas/common/maas/image-storage/5f64c83' |ssh hua@x99 'cat > /tmp/lp2147499-noble.squashfs' sha256sum /tmp/lp2147499-noble.squashfs sudo lvcreate -L 30G -n lp2147499-noble-sru cinder-volumes sudo mkfs.ext4 -L noble-sru-root /dev/cinder-volumes/lp2147499-noble-sru sudo mkdir -p /mnt/lp2147499-noble-sru sudo mount /dev/cinder-volumes/lp2147499-noble-sru /mnt/lp2147499-noble-sru sudo lvs cinder-volumes/lp2147499-noble-sru -o lv_name,lv_size,lv_attr,devices #unzip noble rootfs ROOT=/mnt/lp2147499-noble-sru sudo unsquashfs -f -d "$ROOT" /tmp/lp2147499-noble.squashfs grep -E '^(PRETTY_NAME|VERSION_ID|VERSION_CODENAME)=' "$ROOT/etc/os-release" UUID=$(sudo blkid /dev/cinder-volumes/lp2147499-noble-sru | awk -F 'UUID=' '{print $2}' |awk -F'"' '{print $2}') echo lp2147499-noble-sru |sudo tee "$ROOT/etc/hostname" echo "UUID=$UUID / ext4 defaults 0 1" | sudo tee -a "$ROOT/etc/fstab" 2, install noble-proposed package sudo cp /tmp/open-iscsi_2.1.9-3ubuntu5.5_amd64.deb "$ROOT/tmp/" sudo mount --rbind /dev "$ROOT/dev" sudo mount --make-rslave "$ROOT/dev" sudo mount -t proc proc "$ROOT/proc" sudo mount -t sysfs sys "$ROOT/sys" sudo mount --rbind /run "$ROOT/run" sudo mount --make-rslave "$ROOT/run" printf '#!/bin/sh\nexit 101\n' |sudo tee "$ROOT/usr/sbin/policy-rc.d" sudo chmod 0755 "$ROOT/usr/sbin/policy-rc.d" sudo chroot "$ROOT" apt-get update sudo env DEBIAN_FRONTEND=noninteractive chroot "$ROOT" apt-get install -y linux-generic sudo env DEBIAN_FRONTEND=noninteractive chroot "$ROOT" dpkg -i /tmp/open-iscsi_2.1.9-3ubuntu5.5_amd64.deb sudo chroot "$ROOT" update-initramfs -u -k all sudo chroot "$ROOT" dpkg-query -W -f='${Package} ${Version} ${Architecture}\n' open-iscsi libopeniscsiusr linux-generic #cleanup sudo rm -f "$ROOT/usr/sbin/policy-rc.d" sudo umount "$ROOT/run" sudo umount -R "$ROOT/sys" sudo umount "$ROOT/proc" sudo umount "$ROOT/dev/pts" sudo umount "$ROOT/dev" 3, verify initramfs sudo rm -rf /tmp/lp2147499-noble-initrd mkdir /tmp/lp2147499-noble-initrd sudo unmkinitramfs "$ROOT/boot/initrd.img-6.8.0-142-generic" /tmp/lp2147499-noble-initrd INSTALLED="$ROOT/usr/share/initramfs-tools/scripts/local-top/iscsi" EMBEDDED="/tmp/lp2147499-noble-initrd/main/scripts/local-top/iscsi" sudo sha256sum "$INSTALLED" "$EMBEDDED" sudo cmp -s "$INSTALLED" "$EMBEDDED" echo $? 4, prepare vmlinuz and initrd SERVE=/tmp/lp2147499-noble-http mkdir -p "$SERVE" sudo cp "$ROOT/boot/vmlinuz-6.8.0-142-generic" "$SERVE/noble-native-vmlinuz" sudo cp "$ROOT/boot/initrd.img-6.8.0-142-generic" "$SERVE/noble-native-initrd.img" sudo chown hua:hua "$SERVE"/* cat << EOF |tee noble-native.ipxe #!ipxe kernel http://172.16.1.1:8082/noble-native-vmlinuz ip=none iscsi_auto root=UUID=ee958b0e-9feb-476a-bf5f-1807818de493 ro rootwait rootdelay=20 console=ttyS0,115200n8 break=init cloud-init=disabled initrd http://172.16.1.1:8082/noble-native-initrd.img boot EOF cp noble-native.ipxe "$SERVE/" cd "$SERVE" python3 -m http.server 8082 --bind 172.16.1.1 5, create separate LIO target sudo umount /mnt/lp2147499-noble-sru sudo targetcli /backstores/block create name=lp2147499-noble-sru dev=/dev/cinder-volumes/lp2147499-noble-sru sudo targetcli /iscsi create iqn.2026-09.local.lp2147499:noble sudo targetcli /iscsi/iqn.2026-09.local.lp2147499:noble/tpg1/luns create /backstores/block/lp2147499-noble-sru sudo targetcli /iscsi/iqn.2026-09.local.lp2147499:noble/tpg1/acls create iqn.2026-09.local.lp2147499:noble-vm sudo targetcli saveconfig 6, cmdline CMD="ifclose net0 && ifclose net1 && \ set initiator-iqn iqn.2026-09.local.lp2147499:noble-vm && \ set net1/ip 172.16.1.202 && \ set net1/netmask 255.255.255.0 && \ set net1/gateway 172.16.1.1 && \ ifopen net1 && \ sanhook iscsi:172.16.1.1:::0:iqn.2026-09.local.lp2147499:noble && \ chain http://172.16.1.1:8082/noble-native.ipxe || shell" sudo virt-install \ --name lp2147499-noble-sru \ --memory 4096 \ --vcpus 2 \ --cpu host-passthrough \ --os-variant ubuntu24.04 \ --import \ --disk none \ --network bridge=vsw0,model=virtio,mac=52:54:00:21:47:01 \ --network bridge=vsw1,model=virtio,mac=52:54:00:21:47:02 \ --network bridge=vsw2,model=virtio,mac=52:54:00:21:47:03 \ --network bridge=vsw3,model=virtio,mac=52:54:00:21:47:04 \ --graphics none \ --console pty,target.type=serial \ --boot kernel=/usr/lib/ipxe/ipxe.lkrn,kernel_args="$CMD" \ --print-xml | sudo virsh define /dev/stdin sudo virsh start lp2147499-noble-sru sudo virsh console lp2147499-noble-sru 7, test in initramfs shell, it worked well uname -r cat /proc/cmdline iscsistart -f > /tmp/ibft.txt grep -E 'bootproto|ipaddress|subnet_mask|gateway|net_ifacename' /tmp/ibft.txt mkdir -p /run/initramfs /run/netplan /scripts/local-top/iscsi cat /run/net-enp2s0.conf . /scripts/functions netinfo_to_netplan /run/netplan /run/net-enp2s0.conf cat /run/netplan/enp2s0.yaml #here is the output network: version: 2 ethernets: enp2s0: addresses: - "172.16.1.202/24" gateway4: "172.16.1.1" -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2147499 Title: [SRU] open-iscsi initramfs: preserve static iBFT semantics while fixing netplan rendering for MAAS boot To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/open-iscsi/+bug/2147499/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
