Re: qemu install
On Mon, May 18, 2020 at 06:17:40PM +0200, Viktor Mihajlovski wrote: > I'd recommend to try virt-install, see > http://kvmonz.blogspot.com/p/knowledge-use-virt-install-for-kvm.html. > virt-install will set up the VM in a proper way. > > You will need to invoke virt-install with --arch=s390x if your running on an > x86 box and make sure you have the qemu-system-s390x package installed. > > Chance for success will probably increase with the currency of the QEMU > used. > > The invocation you've reported above doesn't instantiate a virtio disk and > network interface (which are the only device types supported for s390x. > Similary virtual CD/DVD must be on virtio-scsi for s390x. Again, > virt-install and virsh are your friends here. I did try to install with the virt-manager, it should be the same thing as virt-install. But it turns out the bug is with the buster installer as I sent in the other reply. So currently the following works: $ virt-install --arch=s390x --name test --memory 1024 --disk none \ --extra-args=console=ttyS0 \ -l http://ftp.de.debian.org/debian/dists/stretch/main/installer-s390x/ but the same thing with buster is broken: $ virt-install --arch=s390x --name test --memory 1024 --disk none \ --extra-args=console=ttyS0 \ -l http://ftp.de.debian.org/debian/dists/buster/main/installer-s390x/ Starting install... Retrieving file kernel.debian... | 3.3 MB 00:00:00 Retrieving file initrd.debian... | 9.7 MB 00:00:01 Allocating 'virtinst-kernel.debian.mnba14e7' | 3.3 MB 00:00:00 Transferring virtinst-kernel.debian.mnba14e7 | 3.3 MB 00:00:00 Allocating 'virtinst-initrd.debian.2q88l_1j' | 9.7 MB 00:00:00 Transferring virtinst-initrd.debian.2q88l_1j | 9.7 MB 00:00:00 Connected to domain test Escape character is ^] [1.785649] Linux version 4.19.0-9-s390x (debian-ker...@lists.debian.org) (gcc version 8.3.0 (Debian 8.3.0-6)) #1 SMP Debian 4.19.118-2 (2020-04-29) [1.786919] setup: Linux is running under KVM in 64-bit mode [1.788555] setup: The maximum memory size is 1024MB [1.790050] cpu: 1 configured CPUs, 0 standby CPUs [1.822704] Write protected kernel read-only data: 8976k ... [6.148235] mip6: Mobile IPv6 [6.148389] NET: Registered protocol family 17 [6.149302] mpls_gso: MPLS GSO support [6.151503] registered taskstats version 1 [6.152310] zswap: loaded using pool lzo/zbud [6.154776] AppArmor: AppArmor sha1 policy hashing enabled [6.780329] Freeing unused kernel memory: 684K [6.780784] Write protected read-only-after-init data: 20k [6.780870] Run /init as init process steal-ctty: No such file or directory And than just hangs there because of the problem with the serial port name. -- Valentin
Re: qemu install
On Mon, May 18, 2020 at 07:31:15PM +0200, Benjamin Jakob Zimmermann wrote: > $ qemu-system-s390x -M s390-ccw-virtio -m 1G -smp 1 -enable-kvm -nographic > -device virtio-net-ccw,netdev=mynet0 -netdev tap,id=mynet0,script=qemu-ifup > -drive file=/dev/disk/by-path/ccw-0.0. -kernel loopdir/boot/linux_vm > -initrd loopdir/boot/root.bin -append > 'debian-installer/allow_unauthenticated=true' > > This works on a z13 and z14. Works also fine with clefOS (CentOS clone). Thanks for the info. Indeed it seems that things work with the stretch image so I will try to use that. But can we also try to fix buster and unstable images as these seem to be broken at the moment? I have identified the following problems: 1. debian-installer fails to start on serial port due to wrong device name (ttyS1 vs ttysclp0). I can boot with init=/bin/sh and make a symlink but a patch is here: https://salsa.debian.org/installer-team/rootskel/-/merge_requests/2/diffs 2. initrd does not include the required modules (virtio_net and virtio_blk) so network and disk devices are not visible. Had to build a new initrd with these included. 3. installation starts but at some point debootstrap fails with May 17 20:12:05 debootstrap: dpkg: error processing package s390-tools (--configure): May 17 20:12:05 debootstrap: dependency problems - leaving unconfigured May 17 20:12:06 debootstrap: Errors were encountered while processing: May 17 20:12:06 debootstrap: s390-tools May 17 20:12:07 debootstrap: dpkg: dependency problems prevent configuration of s390-tools: May 17 20:12:07 debootstrap: s390-tools depends on perl:any. So probably s390-tools package needs to be updated? -- Valentin
Re: qemu install
On 18/05/2020 18:17, Viktor Mihajlovski wrote: On 5/17/20 8:57 PM, Valentin Vidić wrote: Hi, I'm trying to install a s390x VM using qemu: $ qemu-system-s390x -machine s390-ccw-virtio -nographic \ --cdrom debian-10.4.0-s390x-netinst.iso \ -kernel boot/linux_vm -initrd boot/root.bin -append init=/bin/sh but it doesn't seem to work - there is no network, cdrom or disk. Should this work or is this usecase not supported? I'd recommend to try virt-install, see http://kvmonz.blogspot.com/p/knowledge-use-virt-install-for-kvm.html. virt-install will set up the VM in a proper way. You will need to invoke virt-install with --arch=s390x if your running on an x86 box and make sure you have the qemu-system-s390x package installed. Chance for success will probably increase with the currency of the QEMU used. The invocation you've reported above doesn't instantiate a virtio disk and network interface (which are the only device types supported for s390x. Similary virtual CD/DVD must be on virtio-scsi for s390x. Again, virt-install and virsh are your friends here I mounted the s390x installation media/iso (debian stretch) on 'loopdir'. Installed straight to hd (eckd), should work like this on image files, too. Network script: $ cat qemu-ifup #!/bin/sh set -x switch=inst0 if [ -n "$1" ];then # tunctl -u `whoami` -t $1 (use ip tuntap instead!) ip tuntap add $1 mode tap user `whoami` ip link set $1 up sleep 0.5s # brctl addif $switch $1 (use ip link instead!) ip link set $1 master $switch exit 0 else echo "Error: no interface specified" exit 1 fi Call to qemu: $ qemu-system-s390x -M s390-ccw-virtio -m 1G -smp 1 -enable-kvm -nographic -device virtio-net-ccw,netdev=mynet0 -netdev tap,id=mynet0,script=qemu-ifup -drive file=/dev/disk/by-path/ccw-0.0. -kernel loopdir/boot/linux_vm -initrd loopdir/boot/root.bin -append 'debian-installer/allow_unauthenticated=true' This works on a z13 and z14. Works also fine with clefOS (CentOS clone). Best, Ben.
Re: qemu install
On 5/17/20 8:57 PM, Valentin Vidić wrote: Hi, I'm trying to install a s390x VM using qemu: $ qemu-system-s390x -machine s390-ccw-virtio -nographic \ --cdrom debian-10.4.0-s390x-netinst.iso \ -kernel boot/linux_vm -initrd boot/root.bin -append init=/bin/sh but it doesn't seem to work - there is no network, cdrom or disk. Should this work or is this usecase not supported? I'd recommend to try virt-install, see http://kvmonz.blogspot.com/p/knowledge-use-virt-install-for-kvm.html. virt-install will set up the VM in a proper way. You will need to invoke virt-install with --arch=s390x if your running on an x86 box and make sure you have the qemu-system-s390x package installed. Chance for success will probably increase with the currency of the QEMU used. The invocation you've reported above doesn't instantiate a virtio disk and network interface (which are the only device types supported for s390x. Similary virtual CD/DVD must be on virtio-scsi for s390x. Again, virt-install and virsh are your friends here. -- Kind Regards, Viktor
