Comment 4 for bug 1436166

This is all I have:

[req-79b024be-ebb6-473e-a832-bb7f1fd58672 demo invisible_to_admin] [instance: fd530fd4-e4e6-476a-aa2d-5f4ad6b02cbb] Error from last host: devstack (node devstack): [u'Traceback (most recent call last):\n', u' File "/opt/stack/nova/nova/compute/manager.py", line 2175, in _do_build_and_run_instance\n filter_properties)\n', u' File "/opt/stack/nova/nova/compute/manager.py", line 2318, in _build_and_run_instance\n instance_uuid=instance.uuid, reason=six.text_type(e))\n', u"RescheduledException: Build of instance fd530fd4-e4e6-476a-aa2d-5f4ad6b02cbb was re-scheduled: Unexpected error while running command.\nCommand: qemu-img convert -O raw /opt/stack/data/nova/instances/_base/89faaaa5ec41988d9b775c2fdc678fb4a4b974d9.part /opt/stack/data/nova/instances/_base/89faaaa5ec41988d9b775c2fdc678fb4a4b974d9.converted\nExit code: 1\nStdout: u''\nStderr: u'qemu-img: error while reading sector 702336: Input/output error\\n'\n"]

I'd like to help fix this, if you wouldn't mind mentoring me?