Failed to run instance because thread creation failed.

[guanxiaohua2k6]

I failed to run instance because the thread couldn't be created. The followings are related messages and version I used.

Messages from nova-network.log:

2011-03-11 10:28:48,404 DEBUG nova [-] network_topic : network from (pid=7830) serve /usr/lib/pymodules/python2.6/nova/service.py:278
2011-03-11 10:28:48,404 AUDIT nova [-] Starting network node (version 2011.2-workspace:tarmac-20110310204019-eamnui9ovgiu8dah)
2011-03-11 10:28:48,414 CRITICAL nova [-] failed to create /usr/lib/pymodules/python2.6/ubuntu7.MainThread-7830
(nova): TRACE: Traceback (most recent call last):
(nova): TRACE: File "/usr/bin/nova-network", line 48, in <module>
(nova): TRACE: service.serve()
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/service.py", line 281, in serve
(nova): TRACE: x.start()
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/service.py", line 84, in start
(nova): TRACE: self.manager.init_host()
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/network/manager.py", line 489, in init_host
(nova): TRACE: super(VlanManager, self).init_host()
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/network/manager.py", line 125, in init_host
(nova): TRACE: self.driver.init_host()
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/network/linux_net.py", line 391, in init_host
(nova): TRACE: iptables_manager.apply()
(nova): TRACE: File "/usr/lib/pymodules/python2.6/nova/utils.py", line 523, in inner
(nova): TRACE: with lock:
(nova): TRACE: File "/usr/lib/pymodules/python2.6/lockfile.py", line 223, in __enter__
(nova): TRACE: self.acquire()
(nova): TRACE: File "/usr/lib/pymodules/python2.6/lockfile.py", line 239, in acquire
(nova): TRACE: raise LockFailed("failed to create %s" % self.unique_name)
(nova): TRACE: LockFailed: failed to create /usr/lib/pymodules/python2.6/ubuntu7.MainThread-7830

Version of nova-network: 2011.2~bzr786-0ubuntu0ppa1~maverick1

The contents of nova.conf:

--sql_connection=mysql://root:nova@ubuntu7/nova
--s3_host=ubuntu7
--rabbit_host=192.168.32.202
--cc_host=192.168.32.202
--ec2_url=http://192.168.32.202:8773/services/Cloud

--daemonize=1

--dhcpbridge_flagfile=/etc/nova/nova.conf
--dhcpbridge=/usr/bin/nova-dhcpbridge

--FAKE_subdomain=ec2

--ca_path=/var/lib/nova/CA
--keys_path=/var/lib/nova/keys
--networks_path=/var/lib/nova/networks
--instances_path=/var/lib/nova/instances
--images_path=/var/lib/nova/images
--buckets_path=/var/lib/nova/buckets

--libvirt_type=kvm

--network_manager=nova.network.manager.VlanManager

--vlan_interface=eth0

--logdir=/var/log/nova
--verbose
--volume_group=ubuntu7
--fixed_range=192.168.2.64/26
--network_size=64

[Dan Prince (dan-prince)]

Hi Guan. Can you try setting adding this to your nova.conf file:

--lock_path=/tmp

You can use any directory the nova user can write to.

The latest code requires a writable lock file directory.

[Dan Prince (dan-prince)]

I would also add that it would be nice to have lock_path default to something reasonable (writable) when using the nova packages.

[guanxiaohua2k6 (guanxiaohua2k6)]

Thank you, Dan Prince. I confirmed in my environment. It works. Thank you very much.

[Thierry Carrez (ttx)]

Closing as NOTABUG.
Note that Ubuntu packaging, as of bzr786, defines lock_path.