Hitachi HNAS error when attaching volumes

[Erlon R. Cruz]

Steps to reproduce:
1 - Configure the iSCSI driver with CHAP auth False
2 - Create 10 our more VMs (Boot from Image/Creates a new volume)
3 - Some VMs fails with the following error:
__________________________
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume Traceback (most recent call last):
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume File "/opt/stack/cinder/cinder/volume/flows/manager/create_volume.py", line 513, in _copy_image_to_volume
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume copy_image_to_volume(context, volume_ref, image_service, image_id)
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume File "/usr/local/lib/python2.7/dist-packages/osprofiler/profiler.py", line 105, in wrapper
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume return f(*args, **kwargs)
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume File "/opt/stack/cinder/cinder/volume/driver.py", line 579, in copy_image_to_volume
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume size=volume['size'])
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume File "/opt/stack/cinder/cinder/image/image_utils.py", line 226, in fetch_to_raw
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume run_as_root=run_as_root)
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume File "/opt/stack/cinder/cinder/image/image_utils.py", line 317, in fetch_to_volume_format
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume run_as_root=run_as_root)
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume File "/opt/stack/cinder/cinder/image/image_utils.py", line 147, in convert_image
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume out_format, run_as_root=run_as_root)
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume File "/opt/stack/cinder/cinder/image/image_utils.py", line 121, in _convert_image
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume utils.execute(*cmd, run_as_root=run_as_root)
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume File "/opt/stack/cinder/cinder/utils.py", line 152, in execute
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume return processutils.execute(*cmd, **kwargs)
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume File "/usr/local/lib/python2.7/dist-packages/oslo_concurrency/processutils.py", line 275, in execute
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume cmd=sanitized_cmd)
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume ProcessExecutionError: Unexpected error while running command.
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume Command: sudo cinder-rootwrap /etc/cinder/rootwrap.conf qemu-img convert -t none -O raw /opt/stack/data/cinder/conversion/tmpSIOFmj /dev/disk/by-path/ip-172.24.44.21:3260-iscsi-iqn.2015-01.localhost:evstest2.cinder-default-lun-15
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume Exit code: 1
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume Stdout: u''
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume Stderr: u'qemu-img: /dev/disk/by-path/ip-172.24.44.21:3260-iscsi-iqn.2015-01.localhost:evstest2.cinder-default-lun-15: error while converting raw: Device is too small\n'
2015-07-30 11:08:38.029 TRACE cinder.volume.flows.manager.create_volume

[Dilip S M (itzdilip)]

I have also come across this when we create the volume from image, I have seen based on the image size we provide, am not sure why it is

[Dilip S M (itzdilip)]

https://bugs.launchpad.net/cinder/+bug/1483359

seems this might help

[Dilip S M (itzdilip)]

http://eavesdrop.openstack.org/irclogs/%23openstack-cinder/%23openstack-cinder.2015-04-22.log.html

in IRC also i had been discussed might help

[Dilip S M (itzdilip)]

https://github.com/CloudByteStorages/openstack/blob/master/FAQs/Device_too_small.md

[Erlon R. Cruz (sombrafam)]

Are you using a multinode enviroment or compute and volume services are in the same host?

[Dilip S M (itzdilip)]

I have seen in multinode environment