[rdo-dev] Cinder NFS backend issue

[Cody]

Hi everyone,

I have an issue with using TripleO (Queens) to setup an NFS backend for
Cinder.

My storage.yaml is as follows:

parameter_defaults:
  CinderEnableIscsiBackend: false
  CinderEnableRbdBackend: false
  CinderEnableNfsBackend: true
  NovaEnableRbdBackend: false
  GlanceBackend: 'file'

  CinderNfsMountOptions: 'rw,sync'
  CinderNfsServers: '192.168.24.1:/export/cinder'

  GlanceNfsEnabled: true
  GlanceNfsShare: '192.168.24.1:/export/glance'
  GlanceNfsOptions: 'rw,sync,context=system_u:object_r:glance_var_lib_t:s0'

  NovaNfsEnabled: true
  NovaNfsShare: '192.168.24.1:/export/nova'
  NovaNfsOptions: 'rw,sync,context=system_u:object_r:nfs_t:s0'

I used the undercloud node as an NFS server for testing purposes. Iptables
is set accordingly. The /etc/exportfs on the NFS server is as follows:

/export/nova 192.168.24.0/24(rw,no_root_squash)
/export/glance 192.168.24.0/24(rw,no_root_squash)
/export/cinder 192.168.24.0/24(rw,no_root_squash)

All three folders are set to chmod 777. Nova and Glance work as expected.
Only Cinder remains problematic. I can try to upload volumes from
overcloud, but nothing would show up in the cinder folder. Also Horizon
gives errors like unable to retrieve volume and volume snapshots. Did I
miss something here? I do plan to use Ceph later, but I wish to use NFS for
now to test migration and failover. Any helps would be appreciated. Thank
you!

Best regards,
Cody
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