[Bug 1859656] Re: [2.6] Unable to reboot s390x KVM machine after initial deploy

[Frank Heimes]

It took some time (due to travel), but I was now able to do a setup
based on the old 2.6.0 version [2.6.0 (7803-g6fc5f26eb-
0ubuntu1~18.04.1)] for testing.

And with the combination:

$ apt-cache policy maas
maas:
  Installed: 2.6.0-7803-g6fc5f26eb-0ubuntu1~18.04.1
  Candidate: 2.6.0-7803-g6fc5f26eb-0ubuntu1~18.04.1
  Version table:
 *** 2.6.0-7803-g6fc5f26eb-0ubuntu1~18.04.1 500
        500 http://ppa.launchpad.net/maas-maintainers/testing/ubuntu 
bionic/main s390x Packages
        100 /var/lib/dpkg/status
     2.4.2-7034-g2f5deb8b8-0ubuntu1 500
        500 http://us.ports.ubuntu.com/ubuntu-ports bionic-updates/main s390x 
Packages
     2.4.0~beta2-6865-gec43e47e6-0ubuntu1 500
        500 http://us.ports.ubuntu.com/ubuntu-ports bionic/main s390x Packages
and:
$ apt-cache policy qemu
qemu:
  Installed: (none)
  Candidate: 1:2.11+dfsg-1ubuntu7.21
  Version table:
     1:2.11+dfsg-1ubuntu7.21 500
        500 http://us.ports.ubuntu.com/ubuntu-ports bionic-updates/universe 
s390x Packages
     1:2.11+dfsg-1ubuntu7.20 500
        500 http://ports.ubuntu.com/ubuntu-ports bionic-security/universe s390x 
Packages
     1:2.11+dfsg-1ubuntu7 500
        500 http://us.ports.ubuntu.com/ubuntu-ports bionic/universe s390x 
Packages
the system seems to successful commissions, similar to the latest maas 2.6.2 
version (see above).
But then the VM ends again in state Ready / off.

virsh shows the VM as shutoff:
ubuntu@s1lp11:~$ sudo -H -u maas bash -c 'virsh -c 
qemu+ssh://ubuntu@192.168.122.1/system list --all'
ubuntu@192.168.122.1's password: 
 Id    Name                           State
----------------------------------------------------
 -     vm1                            shut off

The os element looks like this - with the two entries:
  <os>
    <type arch='s390x' machine='s390-ccw-virtio-bionic'>hvm</type>
    <boot dev='network'/>
    <boot dev='hd'/>
  </os>

A manual start (with the help of virsh, console enabled) shows that it
network boots (see attachment).

Removing the network entry and booting didn't work - looks like no OS
deployed on disk yet.

To sum it up - also not working on this 2.6.0 env. that I've just
created.


** Attachment added: "boot_console.txt"
   
https://bugs.launchpad.net/ubuntu-z-systems/+bug/1859656/+attachment/5323507/+files/boot_console.txt

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https://bugs.launchpad.net/bugs/1859656

Title:
  [2.6] Unable to reboot s390x KVM machine after initial deploy

Status in MAAS:
  New
Status in QEMU:
  Incomplete
Status in Ubuntu on IBM z Systems:
  Triaged

Bug description:
  MAAS version: 2.6.1 (7832-g17912cdc9-0ubuntu1~18.04.1)
  Arch: S390x

  Appears that MAAS can not find the s390x bootloader to boot from the
  disk, not sure how maas determines this.  However this was working in
  the past. I had originally thought that if the maas machine was
  deployed then it defaulted to boot from disk.

  If I force the VM to book from disk, the VM starts up as expected.

  Reproduce:

  - Deploy Disco on S390x KVM instance
  - Reboot it

  on the KVM console...

  Connected to domain s2lp6g001
  Escape character is ^]
  done
    Using IPv4 address: 10.246.75.160
    Using TFTP server: 10.246.72.3
    Bootfile name: 'boots390x.bin'
    Receiving data:  0 KBytes
    TFTP error: file not found: boots390x.bin
  Trying pxelinux.cfg files...
    Receiving data:  0 KBytes
    Receiving data:  0 KBytes
  Failed to load OS from network

  ==> /var/log/maas/rackd.log <==
  2020-01-14 18:21:24 provisioningserver.rackdservices.tftp: [info] 
boots390x.bin requested by 10.246.75.160
  2020-01-14 18:21:24 provisioningserver.rackdservices.tftp: [info] 
s390x/65a9ca43-9541-49be-b315-e2ca85936ea2 requested by 10.246.75.160
  2020-01-14 18:21:24 provisioningserver.rackdservices.tftp: [info] 
s390x/01-52-54-00-e5-d7-bb requested by 10.246.75.160
  2020-01-14 18:21:24 provisioningserver.rackdservices.tftp: [info] 
s390x/0AF64BA0 requested by 10.246.75.160
  2020-01-14 18:21:24 provisioningserver.rackdservices.tftp: [info] 
s390x/0AF64BA requested by 10.246.75.160
  2020-01-14 18:21:24 provisioningserver.rackdservices.tftp: [info] 
s390x/0AF64B requested by 10.246.75.160
  2020-01-14 18:21:24 provisioningserver.rackdservices.tftp: [info] s390x/0AF64 
requested by 10.246.75.160
  2020-01-14 18:21:24 provisioningserver.rackdservices.tftp: [info] s390x/0AF6 
requested by 10.246.75.160
  2020-01-14 18:21:24 provisioningserver.rackdservices.tftp: [info] s390x/0AF 
requested by 10.246.75.160
  2020-01-14 18:21:24 provisioningserver.rackdservices.tftp: [info] s390x/0A 
requested by 10.246.75.160
  2020-01-14 18:21:24 provisioningserver.rackdservices.tftp: [info] s390x/0 
requested by 10.246.75.160
  2020-01-14 18:21:24 provisioningserver.rackdservices.tftp: [info] 
s390x/default requested by 10.246.75.160

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