[Qemu-devel] [Bug 1243287] Re: [KVM/QEMU][ARM][SAUCY] fails to boot cloud-image due to host kvm fail

[Andreas Färber]

Manoj, dmidecode seems highly x86-specific according to 
http://www.nongnu.org/dmidecode/, so not running it on arm does seem a correct 
solution for closing this bug. Suggest you assign it back to cloud-init to have 
that fixed.
An alternative to checking for the command's presence would be checking uname 
or whatever Python offers as equivalent.

What do you expect to read from 0xf0000 to 0xfffff on your arm mach-virt
guest? I suggest you file a separate bug report more understandable to
QEMU/KVM developers if there's a valid use case failing, along with
versions, command line and anything else needed for someone to actually
investigate this beyond speculation.

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https://bugs.launchpad.net/bugs/1243287

Title:
  [KVM/QEMU][ARM][SAUCY] fails to boot cloud-image due to host kvm fail

Status in QEMU:
  Confirmed

Bug description:
  On booting the cloud image using qemu/kvm fails with the following
  error:

  Cloud-init v. 0.7.3 running 'init' at Thu, 03 Oct 2013 16:45:21 +0000. Up 
360.78 seconds.
  ci-info: +++++++++++++++++++++++++Net device info+++++++++++++++++++++++++
  ci-info: +--------+------+-----------+---------------+-------------------+
  ci-info: | Device | Up | Address | Mask | Hw-Address |
  ci-info: +--------+------+-----------+---------------+-------------------+
  ci-info: | lo | True | 127.0.0.1 | 255.0.0.0 | . |
  ci-info: | eth0 | True | 10.0.2.15 | 255.255.255.0 | 52:54:00:12:34:56 |
  ci-info: +--------+------+-----------+---------------+-------------------+
  ci-info: ++++++++++++++++++++++++++++++Route 
info++++++++++++++++++++++++++++++
  ci-info: 
+-------+-------------+----------+---------------+-----------+-------+
  ci-info: | Route | Destination | Gateway | Genmask | Interface | Flags |
  ci-info: 
+-------+-------------+----------+---------------+-----------+-------+
  ci-info: | 0 | 0.0.0.0 | 10.0.2.2 | 0.0.0.0 | eth0 | UG |
  ci-info: | 1 | 10.0.2.0 | 0.0.0.0 | 255.255.255.0 | eth0 | U |
  ci-info: 
+-------+-------------+----------+---------------+-----------+-------+
  error: kvm run failed Function not implemented

  /usr/lib/python2.7/dist-
  packages/cloudinit/sources/DataSourceAltCloud.py assumes that
  dmidecode command is availabe (ie it assumes that system is x86) on
  arm systems there is no dmidecode command so host kvm fails with the
  message "error: kvm run failed Function not implemented"

  The patch makes get_cloud_type() function return with UNKNOWN for ARM
  systems.

  I was able to boot the cloud-image on ARM after applying this change.

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