Thanks for the logs. Nova conductor is reporting "NoValidHost: No valid
host was found. There are not enough hosts available." when attempting
to schedule and spawn an instance. That is a somewhat generic failure
message. But the specific failure seems to be a backing storage issue:
2016-11-23T08:17:48.103748Z qemu-system-s390x: -drive file=/dev/disk/by-
path/ip-148.100.42.50:3260-iscsi-iqn.2010-10.org.openstack:volume-
cfbc521f-4d9f-4ecc-8feb-777d1e5446e1-lun-1,format=raw,if=none,id=drive-
virtio-disk0,serial=cfbc521f-4d9f-4ecc-8feb-
777d1e5446e1,cache=none,aio=native: The device is not writable: Bad file
descriptor
...
2016-11-23 03:17:54.654 6858 WARNING nova.scheduler.utils
[req-ed481e89-154a-4002-b402-30002ed6a80b 7cce79da15be4daf9189541d1d5650be
63958815625d4108970e78bacf578e32 - - -] [instance:
89240ffa-7dcf-444d-8a8f-b751cd8b5e19] Setting instance to ERROR state.
2016-11-23 03:17:58.965 6833 ERROR nova.scheduler.utils
[req-ed481e89-154a-4002-b402-30002ed6a80b 7cce79da15be4daf9189541d1d5650be
63958815625d4108970e78bacf578e32 - - -] [instance:
0cb365ea-550f-4720-a630-93821d50d43b] Error from last host: ub01 (node
ub01.marist.edu): [u'Traceback (most recent call last):\n', u' File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 1926, in
_do_build_and_run_instance\n filter_properties)\n', u' File
"/usr/lib/python2.7/dist-packages/nova/compute/manager.py", line 2116, in
_build_and_run_instance\n instance_uuid=instance.uuid,
reason=six.text_type(e))\n', u'RescheduledException: Build of instance
0cb365ea-550f-4720-a630-93821d50d43b was re-scheduled: internal error: process
exited while connecting to monitor: 2016-11-23T08:17:48.103748Z
qemu-system-s390x: -drive
file=/dev/disk/by-path/ip-148.100.42.50:3260-iscsi-iqn.2010-10.org.openstack:volume-cfbc521f-4d9f-4ecc-8feb-777d1e5446e1-lun-1,format=raw,if=none,id=drive-virtio-disk
0,serial=cfbc521f-4d9f-4ecc-8feb-777d1e5446e1,cache=none,aio=native: The
device is not writable: Bad file descriptor\n']
2016-11-23 03:17:59.011 6833 WARNING nova.scheduler.utils
[req-ed481e89-154a-4002-b402-30002ed6a80b 7cce79da15be4daf9189541d1d5650be
63958815625d4108970e78bacf578e32 - - -] Failed to compute_task_build_instances:
No valid host was found. There are not enough hosts available.
Traceback (most recent call last):
File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/server.py", line
150, in inner
return func(*args, **kwargs)
File "/usr/lib/python2.7/dist-packages/nova/scheduler/manager.py", line 104,
in select_destinations
dests = self.driver.select_destinations(ctxt, spec_obj)
File "/usr/lib/python2.7/dist-packages/nova/scheduler/filter_scheduler.py",
line 74, in select_destinations
raise exception.NoValidHost(reason=reason)
NoValidHost: No valid host was found. There are not enough hosts
available.
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1644785
Title:
Ubuntu Openstack Mitaka can only deploy up to 52 instances
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