Re: [Qemu-devel] [Bug 1563887] Re: qemu-system-ppc64 freezes on starting image on ppc64le

[Michael Roth <mdroth@linux.vnet.ibm.com>]

Quoting Mike Rushton (2016-04-04 09:49:29)
> ubuntu@alpine01:~$ ppc64_cpu --info
> Core   0:    0*    1*    2*    3*    4*    5*    6*    7* 
> Core   1:    8*    9*   10*   11*   12*   13*   14*   15* 
> Core   2:   16*   17*   18*   19*   20*   21*   22*   23* 
> Core   3:   24*   25*   26*   27*   28*   29*   30*   31* 
> Core   4:   32*   33*   34*   35*   36*   37*   38*   39* 
> Core   5:   40*   41*   42*   43*   44*   45*   46*   47* 
> Core   6:   48*   49*   50*   51*   52*   53*   54*   55* 
> Core   7:   56*   57*   58*   59*   60*   61*   62*   63* 
> ubuntu@alpine01:~$ ppc64_cpu --smt off
> SMT=8
> ubuntu@alpine01:~$ ppc64_cpu --info
> Core   0:    0*    1*    2*    3*    4*    5*    6*    7* 
> Core   1:    8*    9*   10*   11*   12*   13*   14*   15* 
> Core   2:   16*   17*   18*   19*   20*   21*   22*   23* 
> Core   3:   24*   25*   26*   27*   28*   29*   30*   31* 
> Core   4:   32*   33*   34*   35*   36*   37*   38*   39* 
> Core   5:   40*   41*   42*   43*   44*   45*   46*   47* 
> Core   6:   48*   49*   50*   51*   52*   53*   54*   55* 
> Core   7:   56*   57*   58*   59*   60*   61*   62*   63* 

Yah, this is not right.

I think the command you need is actually:

  ppc64_cpu --smt=1

I don't know if this is the root cause, but I would not
expect things to work in general without SMT=1

> 
> Still freezing at the same point:
> 
> Trying to load:  from: disk ...   Successfully loaded
> * finddevice /memory grub workaround *
> * finddevice /memory grub workaround *
> * finddevice /memory grub workaround *
> Linux ppc64le
> #31-Ubuntu SMP F
> 
> 
> This is running on an LPAR in PowerNV mode.
> 
> -- 
> You received this bug notification because you are a member of qemu-
> devel-ml, which is subscribed to QEMU.
> https://bugs.launchpad.net/bugs/1563887
> 
> Title:
>   qemu-system-ppc64 freezes on starting image on ppc64le
> 
> Status in QEMU:
>   New
> Status in linux package in Ubuntu:
>   Confirmed
> Status in qemu package in Ubuntu:
>   Confirmed
> 
> Bug description:
>   qemu-system-ppc64 running on Ubuntu 16.04 beta-2 fails to start an
>   image as part of the certification process. This on an IBM ppc64le in
>   PowerVM mode running Ubuntu 16.04 beta-2 deployed by MAAS 1.9.1. There
>   is no error output.
> 
>   ubuntu@alpine01:~/kvm$ qemu-system-ppc64 -m 256 -display none -nographic -net nic -net user,net=10.0.0.0/8,host=10.0.0.1,hostfwd=tcp::2222-:22 -machine pseries -drive file=xenial-server-cloudimg-ppc64el-disk1.img,if=virtio -drive file=seed.iso,if=virtio
>   WARNING: Image format was not specified for 'seed.iso' and probing guessed raw.
>            Automatically detecting the format is dangerous for raw images, write operations on block 0 will be restricted.
>            Specify the 'raw' format explicitly to remove the restrictions.
> 
>   SLOF **********************************************************************
>   QEMU Starting
>    Build Date = Jan 29 2016 18:58:37
>    FW Version = buildd@ release 20151103
>    Press "s" to enter Open Firmware.
> 
>   Populating /vdevice methods
>   Populating /vdevice/vty@71000000
>   Populating /vdevice/nvram@71000001
>   Populating /vdevice/l-lan@71000002
>   Populating /vdevice/v-scsi@71000003
>          SCSI: Looking for devices
>             8200000000000000 CD-ROM   : "QEMU     QEMU CD-ROM      2.5+"
>   Populating /pci@800000020000000
>                        00 1800 (D) : 1af4 1001    virtio [ block ]
>                        00 1000 (D) : 1af4 1001    virtio [ block ]
>                        00 0800 (D) : 106b 003f    serial bus [ usb-ohci ]
>                        00 0000 (D) : 1234 1111    qemu vga
>   No NVRAM common partition, re-initializing...
>   Installing QEMU fb
> 
>   Scanning USB
>     OHCI: initializing
>       USB Keyboard
>       USB mouse
>   No console specified using screen & keyboard
> 
>     Welcome to Open Firmware
> 
>     Copyright (c) 2004, 2011 IBM Corporation All rights reserved.
>     This program and the accompanying materials are made available
>     under the terms of the BSD License available at
>     http://www.opensource.org/licenses/bsd-license.php
> 
>   Trying to load:  from: /pci@800000020000000/scsi@3 ...
>   E3404: Not a bootable device!
>   Trying to load:  from: /pci@800000020000000/scsi@2 ...   Successfully loaded
>   Linux ppc64le
>   #31-Ubuntu SMP F
> 
>   ProblemType: Bug
>   DistroRelease: Ubuntu 16.04
>   Package: qemu-system-ppc 1:2.5+dfsg-5ubuntu6
>   ProcVersionSignature: Ubuntu 4.4.0-16.32-generic 4.4.6
>   Uname: Linux 4.4.0-16-generic ppc64le
>   ApportVersion: 2.20-0ubuntu3
>   Architecture: ppc64el
>   Date: Wed Mar 30 14:10:01 2016
>   KvmCmdLine:
>    COMMAND         STAT  EUID  RUID   PID  PPID %CPU COMMAND
>    kvm-irqfd-clean S<       0     0  1172     2  0.0 [kvm-irqfd-clean]
>    qemu-nbd        Ssl      0     0 13467     1  0.0 qemu-nbd -c /dev/nbd0 xenial-server-cloudimg-ppc64el-disk1.img
>    qemu-system-ppc Sl+   1000  1000 18973 18896  101 qemu-system-ppc64 -m 256 -display none -nographic -net nic -net user,net=10.0.0.0/8,host=10.0.0.1,hostfwd=tcp::2222-:22 -machine pseries -drive file=xenial-server-cloudimg-ppc64el-disk1.img,if=virtio -drive file=seed.iso,if=virtio
>   Lsusb: Error: command ['lsusb'] failed with exit code 1:
>   ProcEnviron:
>    TERM=xterm
>    PATH=(custom, no user)
>    LANG=en_US.UTF-8
>    SHELL=/bin/bash
>   ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinux-4.4.0-16-generic root=UUID=92d820c8-ab25-497b-9b1e-f1435992bbf3 ro
>   ProcLoadAvg: 1.08 0.94 0.58 2/616 19571
>   ProcLocks:
>    1: POSIX  ADVISORY  WRITE 886 00:13:381 0 EOF
>    2: POSIX  ADVISORY  WRITE 1339 00:13:528 0 EOF
>    3: FLOCK  ADVISORY  WRITE 1284 00:13:522 0 EOF
>    4: POSIX  ADVISORY  WRITE 2281 00:13:563 0 EOF
>    5: POSIX  ADVISORY  WRITE 1331 00:13:536 0 EOF
>   ProcSwaps:
>    Filename                             Type            Size    Used    Priority
>    /swap.img                               file         8388544 0       -1
>   ProcVersion: Linux version 4.4.0-16-generic (buildd@bos01-ppc64el-001) (gcc version 5.3.1 20160320 (Ubuntu/Linaro/IBM 5.3.1-12ubuntu4) ) #32-Ubuntu SMP Thu Mar 24 22:31:14 UTC 2016
>   SourcePackage: qemu
>   UpgradeStatus: No upgrade log present (probably fresh install)
>   bootlist:
>    /pci@800000020000011/pci1014,034A@0/sas/disk@4068402c40
>    /pci@800000020000018/ethernet@0:speed=auto,duplex=auto,csarch,000.000.000.000,,000.000.000.000,000.000.000.000,5,5,000.000.000.000,512
>    /pci@800000020000018/ethernet@0,1:speed=auto,duplex=auto,csarch,000.000.000.000,,000.000.000.000,000.000.000.000,5,5,000.000.000.000,512
>    /pci@800000020000018/ethernet@0,2:speed=auto,duplex=auto,csarch,000.000.000.000,,000.000.000.000,000.000.000.000,5,5,000.000.000.000,512
>    /pci@800000020000018/ethernet@0,3:speed=auto,duplex=auto,csarch,000.000.000.000,,000.000.000.000,000.000.000.000,5,5,000.000.000.000,512
>   cpu_cores: Number of cores present = 8
>   cpu_coreson: Number of cores online = 8
>   cpu_smt: SMT=8
>   lscfg_vp: Error: [Errno 2] No such file or directory: 'lscfg'
>   lsmcode: Error: [Errno 2] No such file or directory: 'lsmcode'
> 
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