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Hi, Ronivon Costa

If you use kvm(libvirt), you can logon the compute node.
use "virsh list --all" list all your no-running vm. For example, there is
an instance name "instance-00000001", you cannot reboot using nova command
because it attached block disk. You need do:
1. virsh undefine instance-0000001
2. goto the instances dir(default
/var/lib/nova/instances/instance-00000001), run "virsh define libvirt.xml"
3. then "virsh start instance-00000001", it can be started now/
4. then you should update information about "instances" and "volumes" table
in nova db. I think you already done it.
5. then you can "reboot" use nova-client or in dashboard.
6. then attach volume to the instance in nova-client or dashboard

I hope it can help you.

On Saturday, November 10, 2012, Ronivon Costa <ronivon.costa at gmail.com>
wrote:
> Hi there,
> I am dealing with this issue for a while, but could not figure out what
is going on.
> After a reboot in the openstack server, I am not able to restart ANY
instance that had a nova-volume attached.
> I tried the DR procedure here without any improvement:
>
http://docs.openstack.org/trunk/openstack-compute/admin/content/nova-disaster-recovery-process.html
> The error in compute.log is:
> ERROR nova.compute.manager [req-adacca25-ede8-4c6d-be92-9e8bd8578469
cb302c58bb4245cebc61e132c79c1111 768bd68a0ac149eb8e300665eb3d3950]
[instance: 3cd109e4-addf-4aa8-bf66-b69df6573cea] Cannot reboot instance:
iSCSI device not found at
/dev/disk/by-path/ip-10.100.200.120:3260-iscsi-iqn.2010-10.org.openstack:volume-20db45cc-c97f-4589-9c9f-ed283b0bc16e-lun-1
> This is a very restrictive issue, because I can not simply attach volumes
to instances knowing that in a power failure or reboot for maintenance I
will have my instances unavailable.
> Below there is some info about my setup.
> Any idea? Anything!
> :)
> Linux nova-controller 2.6.32-279.11.1.el6.x86_64 #1 SMP Tue Oct 16
15:57:10 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux
> rpm -qa |grep openstack
> openstack-nova-api-2012.2-2.el6.noarch
> openstack-dashboard-2012.2-3.el6.noarch
> openstack-utils-2012.2-5.el6.noarch
> openstack-nova-volume-2012.2-2.el6.noarch
> openstack-nova-novncproxy-0.4-2.el6.noarch
> openstack-nova-common-2012.2-2.el6.noarch
> openstack-nova-console-2012.2-2.el6.noarch
> openstack-nova-network-2012.2-2.el6.noarch
> openstack-nova-compute-2012.2-2.el6.noarch
> openstack-nova-cert-2012.2-2.el6.noarch
> openstack-nova-2012.2-2.el6.noarch
> openstack-glance-2012.2-2.el6.noarch
> python-django-openstack-auth-1.0.2-3.el6.noarch
> openstack-nova-objectstore-2012.2-2.el6.noarch
> openstack-nova-scheduler-2012.2-2.el6.noarch
> openstack-keystone-2012.2-1.el6.noarch
>
> --
> --
> Ronivon C. Costa
> IBM Certified for Tivoli Software
> ITIL V3 Certified
> Tlm: (+351) 96 676 4458
> Skype: ronivon.costa
> BLog ((hosted in my own personal cloud infrastructure):
> http://cloud0.dyndns-web.com/blog/
>
>

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