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On 05/25/2012 01:31 AM, Sébastien Han wrote:
> Hi everyone,
>
> I setup a ceph cluster and I use the RBD driver for nova-volume.
> I can create volumes and snapshots but currently I can't attach them to
> an instance.
> Apparently the volume is detected as busy but it's not, no matter which
> name I choose.
> I tried from horizon and the command line, same issue.
>
> $ nova --debug volume-attach de3743be-69be-4ec3-8de3-fc7df6903a97 12
> /dev/vdc
> connect: (localhost, 5000)
> send: 'POST /v2.0/tokens HTTP/1.1\r\nHost:
> localhost:5000\r\nContent-Length: 100\r\ncontent-type:
> application/json\r\naccept-encoding: gzip, deflate\r\naccept:
> application/json\r\nuser-agent: python-novaclient\r\n\r\n{"auth":
> {"tenantName": "admin", "passwordCredentials": {"username": "admin",
> "password": "admin"}}}'
> reply: 'HTTP/1.1 200 OK\r\n'
> header: Content-Type: application/json
> header: Vary: X-Auth-Token
> header: Date: Fri, 25 May 2012 08:29:46 GMT
> header: Transfer-Encoding: chunked
> connect: (172.17.1.6, 8774)
> send: u'GET
> /v2/d1f5d27ccf594cdbb034c8a4123494e9/servers/de3743be-69be-4ec3-8de3-fc7df6903a97
> HTTP/1.1\r\nHost: 172.17.1.6:8774
> <http://172.17.1.6:8774>\r\nx-auth-project-id: admin\r\nx-auth-token:
> 37ff6354b9114178889128175494c666\r\naccept-encoding: gzip,
> deflate\r\naccept: application/json\r\nuser-agent:
> python-novaclient\r\n\r\n'
> reply: 'HTTP/1.1 200 OK\r\n'
> header: X-Compute-Request-Id: req-fc7686dd-7dff-4ea2-b2dd-be584dadb7c1
> header: Content-Type: application/json
> header: Content-Length: 1371
> header: Date: Fri, 25 May 2012 08:29:46 GMT
> send: u'POST
> /v2/d1f5d27ccf594cdbb034c8a4123494e9/servers/de3743be-69be-4ec3-8de3-fc7df6903a97/os-volume_attachments
> HTTP/1.1\r\nHost: 172.17.1.6:8774
> <http://172.17.1.6:8774>\r\nContent-Length: 60\r\nx-auth-project-id:
> admin\r\naccept-encoding: gzip, deflate\r\naccept:
> application/json\r\nx-auth-token:
> 37ff6354b9114178889128175494c666\r\nuser-agent:
> python-novaclient\r\ncontent-type:
> application/json\r\n\r\n{"volumeAttachment": {"device": "/dev/vdc",
> "volumeId": 12}}'
> reply: 'HTTP/1.1 200 OK\r\n'
> header: X-Compute-Request-Id: req-4a22f603-4aad-4ae9-99a2-6a7bcacf974f
> header: Content-Type: application/json
> header: Content-Length: 48
> header: Date: Fri, 25 May 2012 08:29:46 GMT
> $ echo $?
> 0
>
> See the logs here:
> http://paste.openstack.org/show/18163/

Hi Seb,

It looks like the DeviceIsBusy exception is raised when libvirt
returns failure for any reason when attaching a volume. Try turning on
debug logging for libvirt and attaching again, and posting the logs
from libvirt.

You might need to upgrade libvirt - the version in Ubuntu 12.04 should
work, or upstream libvirt 0.9.12.

Josh

> If you need more information let me know :)
> Thank you in advance.
>
> Cheers.
>
> ~Seb