openstack team mailing list archive

[John Griffith <john.griffith@xxxxxxxxxxxxx>]

On Fri, Nov 16, 2012 at 3:17 AM, Nicolae Paladi <n.paladi@xxxxxxxxx> wrote:

> Hi,
>
> this is likely an RTFM question, but I haven't found any relevant 'FM' so
> I decided
> to ask on the mailing list before digging into the code:
>
> How are volumes mapped to the instances after they are restarted?
>

In terms of a reboot of the instance, I believe this is handled via the BDM
table in the DB, it's checked on a reboot and the attach is verified.


>
> How can a volume created earlier be identified to be attached to a newly
> spawned intance?
>

Not sure I see the question here, use the same process "nova volume-attach
<server-uuid> <volume-uuid> <path>

>
> Are the IQNs created during volume creation exposed anywhere
> else than the compute nodes?
>

Nope, not really.  You can find what they are either by checking the DB or
checking the persistence file info for the volume
(/var/lib/cinder/volumes/xxx, or devstack:
/opt/stack/data/cinder/volumes/xxxx)


> Thanks,
> /Nico.
>
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