openstack-volume team mailing list archive

[Brano Zarnovican <zarnovican@xxxxxxxxx>]

On Wed, Dec 5, 2012 at 10:41 PM, Swartzlander, Ben
<Ben.Swartzlander@xxxxxxxxxx> wrote:
> Brano, I think you may be right about DFM failing to ensure the list of LUNs is up to date. Your workaround will probably solve the issue you're seeing.

Hi Ben (, Rushi),

sorry for the much delayed response.

> My question is whether it would slow down operations at all in the 85-90% of the time when DFM does the right thing.

No slow down in Good case. It will only invoke extra
'_lookup_lun_for_volume', which is cheap.

> If not, then I would like to take the change and put it in the official driver.

I would still like to know if DFM is suppose to return up-to-date list
or not. Maybe there is nicer workaround to tweak some config variables
on DFM (or OnTap?).

> Also please do file a bug and we'll make sure it gets assigned to someone at NetApp.

I have just submitted an Openstack bug report with all the details
https://bugs.launchpad.net/nova/+bug/1095633

Regards,

Brano Zarnovican