NetApp NFS driver won't resolve hostnames

[Andrew Kerr]

If you use host names in your NFS shares configuration file for the NetApp NFS driver in the format of:

hostname:/share

Cinder scheduler will report the following error when attempting to create a volume (cinder create 1):

2014-01-09 19:44:12.064 WARNING cinder.scheduler.host_manager [req-277fdfab-5404-4f17-890a-c15d30399c5e 0319d133143048acb7f438ff6b265c2d 4432249f42ba42e3974943bc305e8083] volume service is down or disabled. (host: openstack1)
2014-01-09 19:44:12.064 WARNING cinder.scheduler.host_manager [req-277fdfab-5404-4f17-890a-c15d30399c5e 0319d133143048acb7f438ff6b265c2d 4432249f42ba42e3974943bc305e8083] volume service is down or disabled. (host: openstack1@cmodeDirectNFS)
2014-01-09 19:44:12.065 ERROR cinder.volume.flows.create_volume [req-277fdfab-5404-4f17-890a-c15d30399c5e 0319d133143048acb7f438ff6b265c2d 4432249f42ba42e3974943bc305e8083] Failed to schedule_create_volume: No
valid host was found.
2014-01-09 19:44:12.066 DEBUG cinder.volume.flows.create_volume [req-277fdfab-5404-4f17-890a-c15d30399c5e 0319d133143048acb7f438ff6b265c2d 4432249f42ba42e3974943bc305e8083] Updating volume: c1eeb7cb-b292-420d-a9c4-96b09bfdd69b with {'status': 'error'} due to: No valid host was found. from (pid=16336) _error_out_volume /opt/stack/cinder/cinder/volume/flows/create_volume/__init__.py:130

If an ip address is used instead:

1.2.3.4:/share

The volume create works correctly

[Andrew Kerr (andrew-kerr)]

New information. My original issue was bad DNS settings, once that was fixed the true issue arose when attempting to create a snapshot with hostnames in the nfs shares file. The following is thrown in the c-vol log:

2014-01-10 11:02:58.063 DEBUG cinder.volume.manager [req-3a3a9d0b-4b39-4315-aef7-1864acdf0e08 bbfe41bc184f4378948211506fe3f780 83f2105d92f64cbe96853ca6ffd2a0d8]
snapshot f6a145e1-32fc-4980-896c-c70b4b4d1968: creating from (pid=5060) create_snapshot /opt/stack/cinder/cinder/volume/manager.py:444
2014-01-10 11:02:58.150 ERROR cinder.openstack.common.rpc.amqp [req-3a3a9d0b-4b39-4315-aef7-1864acdf0e08 bbfe41bc184f4378948211506fe3f780 83f2105d92f64cbe96853ca6ffd2a0d8]
Exception during message handling
2014-01-10 11:02:58.150 TRACE cinder.openstack.common.rpc.amqp Traceback (most recent call last):
2014-01-10 11:02:58.150 TRACE cinder.openstack.common.rpc.amqp File "/opt/stack/cinder/cinder/openstack/common/rpc/amqp.py", line 441, in _process_data
2014-01-10 11:02:58.150 TRACE cinder.openstack.common.rpc.amqp **args)
2014-01-10 11:02:58.150 TRACE cinder.openstack.common.rpc.amqp File "/opt/stack/cinder/cinder/openstack/common/rpc/dispatcher.py", line 148, in dispatch
2014-01-10 11:02:58.150 TRACE cinder.openstack.common.rpc.amqp return getattr(proxyobj, method)(ctxt, **kwargs)
2014-01-10 11:02:58.150 TRACE cinder.openstack.common.rpc.amqp File "/opt/stack/cinder/cinder/utils.py", line 818, in wrapper
2014-01-10 11:02:58.150 TRACE cinder.openstack.common.rpc.amqp return func(self, *args, **kwargs)
2014-01-10 11:02:58.150 TRACE cinder.openstack.common.rpc.amqp File "/opt/stack/cinder/cinder/volume/manager.py", line 459, in create_snapshot
2014-01-10 11:02:58.150 TRACE cinder.openstack.common.rpc.amqp {'status': 'error'})
2014-01-10 11:02:58.150 TRACE cinder.openstack.common.rpc.amqp File "/usr/lib/python2.7/contextlib.py", line 24, in __exit__
2014-01-10 11:02:58.150 TRACE cinder.openstack.common.rpc.amqp self.gen.next()
2014-01-10 11:02:58.150 TRACE cinder.openstack.common.rpc.amqp File "/opt/stack/cinder/cinder/volume/manager.py", line 450, in create_snapshot
2014-01-10 11:02:58.150 TRACE cinder.openstack.common.rpc.amqp model_update = self.driver.create_snapshot(snapshot_ref)
2014-01-10 11:02:58.150 TRACE cinder.openstack.common.rpc.amqp File "/opt/stack/cinder/cinder/volume/drivers/netapp/nfs.py", line 112, in create_snapshot
2014-01-10 11:02:58.150 TRACE cinder.openstack.common.rpc.amqp snapshot['volume_id'])
2014-01-10 11:02:58.150 TRACE cinder.openstack.common.rpc.amqp File "/opt/stack/cinder/cinder/volume/drivers/netapp/nfs.py", line 782, in _clone_volume
2014-01-10 11:02:58.150 TRACE cinder.openstack.common.rpc.amqp (vserver, exp_volume) = self._get_vserver_and_exp_vol(volume_id, share)
2014-01-10 11:02:58.150 TRACE cinder.openstack.common.rpc.amqp File "/opt/stack/cinder/cinder/volume/drivers/netapp/nfs.py", line 790, in _get_vserver_and_exp_vol
2014-01-10 11:02:58.150 TRACE cinder.openstack.common.rpc.amqp ifs = self._get_if_info_by_ip(host_ip)
2014-01-10 11:02:58.150 TRACE cinder.openstack.common.rpc.amqp File "/opt/stack/cinder/cinder/volume/drivers/netapp/nfs.py", ...

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/65999

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/65999
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=ed05bbe1e786e3eedfd94e7f6724ecb38f32f1e6
Submitter: Jenkins
Branch: master

commit ed05bbe1e786e3eedfd94e7f6724ecb38f32f1e6
Author: Bob Callaway <email address hidden>
Date: Fri Jan 10 11:15:07 2014 -0500

    Ensure hostnames are converted to IP for comparison.

    Also switch to using getaddrinfo for IPv6 compliance
    vs gethostbyname.

    Change-Id: I1a194eae514a65bff56488571c05457bfa660c02
    Closes-Bug: 1267667