Re: [Openstack] Problem with attaching disks to an instance

Mon, 14 May 2012 08:00:39 -0700

Hi,

Thanks for the reply.

Yes, I've gone through the document. Volume creation and deletion are working perfectly fine. When I run "iscsiadm -m discovery -t st -p volume_node" on the compute node, I can see the volumes. But somehow the compute node is being misinformed about the volume node after giving the attach command.

I'm not using iscsitarget as per that document. Installation of nova-volume on ubuntu precise automatically took care of it using tgt.

Kind Regards,
Shashank Sahni

On 05/14/2012 07:34 PM, [email protected] wrote:

Hi Shashank ,

 

I preassume that the steps outlined in the link below has been followed.

 

http://docs.openstack.org/trunk/openstack-compute/admin/content/managing-volumes.html

 

 

Thanks

Meena Raja

 

 

 

 

From: [email protected] [mailto:[email protected]] On Behalf Of Shashank Sahni
Sent: Monday, May 14, 2012 6:23 PM
To: Razique Mahroua
Cc: [email protected]
Subject: Re: [Openstack] Problem with attaching disks to an instance

 

Hi,

I set this option in the configuration files of both compute and controller. Restarted the service, but unfortunately same result.

Regards,
Shashank Sahni

On 05/14/2012 05:58 PM, Razique Mahroua wrote:

Hi,
do you have the flag iscsi_ip_prefix configured in your nova.conf ?
Razique


14 mai 2012 14:22

Hi everyone,

I'm trying to configure a multi-node installation. Here is a brief overview.

1) controller - api+network+scheduler+novnc+glance+keystone (nova.conf - http://paste.openstack.org/show/17470/)
2) compute node (nova.conf - http://paste.openstack.org/show/17469)
3) volume node(single)

Compute and vnc are working fine. I'm able to create and delete volumes. Iscsi discovery from the compute nodes is working too. But when I try to attach a volume, the compute node tries to connect to the controller node instead of volume and hence crashes with the following error.

2012-05-14 17:32:13 TRACE nova.rpc.amqp ProcessExecutionError: Unexpected error while running command.
2012-05-14 17:32:13 TRACE nova.rpc.amqp Command: sudo nova-rootwrap iscsiadm -m node -T iqn.2010-10.org.openstack:volume-00000003 -p controller:3260 --rescan
2012-05-14 17:32:13 TRACE nova.rpc.amqp Exit code: 255
2012-05-14 17:32:13 TRACE nova.rpc.amqp Stdout: ''
2012-05-14 17:32:13 TRACE nova.rpc.amqp Stderr: 'iscsiadm: No portal found.\n'

Any suggestions?

Kind Regards,
Shashank Sahni

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