fuel-dev team mailing list archive

[Vladimir Kuklin <vkuklin@xxxxxxxxxxxx>]

I registered the blueprint with short description:
https://blueprints.launchpad.net/fuel/+spec/reliable-disk-naming

Let's implement it in 5.0 release and document just
https://bugs.launchpad.net/fuel/+bug/1263648 in 4.1 Release Docs.


On Fri, Feb 14, 2014 at 1:24 AM, Vladimir Kozhukalov <
vkozhukalov@xxxxxxxxxxxx> wrote:

> https://bugs.launchpad.net/fuel/+bug/1277151 and
> https://bugs.launchpad.net/fuel/+bug/1271549 are actually the same bug.
> They are fixed with these two patch sets
> https://review.openstack.org/#/c/71885/ and
> https://review.openstack.org/#/c/71836/.
>
> This issue https://bugs.launchpad.net/fuel/+bug/1263648 is completely
> another. It is connected with the fact, that PATH_ID variable is not always
> unique. Udev just rewrites former by-path links with newer ones. This issue
> is not critical at the moment but it can be if we do some kind of disk
> reconfiguration in the future. We still need reliable scheme of naming hard
> drives throughout the range of various kernels.
>
> Vladimir Kozhukalov
>
>
> On Thu, Feb 13, 2014 at 3:45 AM, Dmitry Borodaenko <
> dborodaenko@xxxxxxxxxxxx> wrote:
>
>> On Wed, Feb 12, 2014 at 7:41 AM, Vladimir Kuklin <vkuklin@xxxxxxxxxxxx>
>> wrote:
>> > Vladimir,
>> >
>> > Please clarify current status for these bugs:
>> >
>> > https://bugs.launchpad.net/fuel/+bug/1271549
>> > https://bugs.launchpad.net/fuel/+bug/1277151
>> > https://bugs.launchpad.net/fuel/+bug/1263648
>> >
>> >
>> >
>> > AFAIU, https://bugs.launchpad.net/fuel/+bug/1277151 is the main bug and
>> > there are change requests
>> >
>> > https://review.openstack.org/#/c/71836/ and
>> > https://review.openstack.org/#/c/71885/
>> >
>> > waiting for it. The main problem is that it breaks kvm-based tests as we
>> > need to patch devops correspondingly.
>>
>> The change requests above are designed to fall back to by-path
>> specifically to remain compatible with kvm virtio devices. I've done a
>> test deployment in a devops-driven kvm based test environment with
>> both patches applied and it worked fine. I've approved both patches
>> and they are now merged to fuel-web and fuel-library master branches.
>>
>> > Bug https://bugs.launchpad.net/fuel/+bug/1263648 should be fixed by
>> writing
>> > patch for nailgun-agent which uses block device id before it falls back
>> to
>> > by-path or </dev/sda|/dev/sdb> definition.
>> >
>> > Bug https://bugs.launchpad.net/fuel/+bug/1271549 is duplicate of the
>> main
>> > bug.
>>
>> I think it's the other way around: #1263648 is the duplicate, and
>> #1271549 is a similar bug that may be fixed by the above two change
>> requests.
>>
>> > Thus, we need to only merge the patches for the main bug, fix devops
>> library
>> > for our tests and fix nailgun agent for Ubuntu. Then we can write better
>> > methods of disks naming for 5.0 release. Please, correct me if I am
>> wrong:
>>
>> With the above fixes merged, I think our disk device identification
>> should now be reliable enough, is there a plan for further changes in
>> 5.0?
>>
>> --
>> Dmitry Borodaenko
>>
>
>


-- 
Yours Faithfully,
Vladimir Kuklin,
Senior Deployment Engineer,
Mirantis, Inc.
+7 (495) 640-49-04
+7 (926) 702-39-68
Skype kuklinvv
45bk3, Vorontsovskaya Str.
Moscow, Russia,
www.mirantis.com <http://www.mirantis.ru/>
www.mirantis.ru
vkuklin@xxxxxxxxxxxx