Re: blueprint: consistency groups

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Just updated the pull request with all fixes. Please review one more time.

On Wed, May 25, 2016 at 6:01 PM, Victor Denisov <vdenisov@xxxxxxxxxxxx> wrote:
> Here is the link to my pull request with operations on consistency
> groups only: create cg, remove cg, list cgs.
>
> https://github.com/ceph/ceph/pull/9333
>
> On Wed, May 25, 2016 at 5:53 PM, Jason Dillaman <jdillama@xxxxxxxxxx> wrote:
>> Perfect.  I prefer to have the PR's commits reflect the clean
>> end-state of the change instead of having multiple "tweak" commits
>> fixing code review comments.  Therefore, a rebase to address the
>> comment in its associated comment and force push is the desired
>> process.
>>
>> On Wed, May 25, 2016 at 5:34 PM, Victor Denisov <vdenisov@xxxxxxxxxxxx> wrote:
>>> I this case I case create a separate pull request for consistency
>>> group's operations only(create, remove, list).
>>> Another pull request will be: add image to cg, remove image, list images.
>>>
>>> One more question. How do you prefer comments to be addressed, as an
>>> additional commit to the pull request or amend the corresponding
>>> commit?
>>>
>>> V.
>>>
>>> On Tue, May 24, 2016 at 10:30 PM, Jason Dillaman <jdillama@xxxxxxxxxx> wrote:
>>>> The current PR is at approximately 2500 lines -- it would be nice to
>>>> have a PR under 1000 changed lines in a perfect world.  The trouble
>>>> with larger PR is that after you address comments, I have to re-read
>>>> it all again.  The smaller the PR, the faster it can be reviewed and
>>>> merged.  If changes depend on another PR, you can always
>>>> non-fast-forward merge the other PR branch into your dependent PR
>>>> branch so that it's clear what needs to be reviewed.
>>>>
>>>> On Tue, May 24, 2016 at 6:42 PM, Victor Denisov <vdenisov@xxxxxxxxxxxx> wrote:
>>>>> Yes, I'm working on splitting it into small logically separated commits.
>>>>> My current PR is for CRUD operations only(create, remove, add image,
>>>>> remove image, show info).
>>>>> Do you want even a smaller PR or this one is small enough?
>>>>>
>>>>> Thanks,
>>>>> V.
>>>>>
>>>>> On Mon, May 23, 2016 at 7:39 PM, Jason Dillaman <jdillama@xxxxxxxxxx> wrote:
>>>>>> Definitely want to ensure that it cleanly merges with master.  I would
>>>>>> also request, if at all possible, that you break it into individual
>>>>>> PRs of concrete sub-tasks for implementing consistency groups for ease
>>>>>> of review.  Have individual commits for each step of implementing the
>>>>>> task would also help (i.e. squash related commits, fix style issues or
>>>>>> bugs in the commit that introduced them, etc).
>>>>>>
>>>>>> On Mon, May 23, 2016 at 6:43 PM, Victor Denisov <vdenisov@xxxxxxxxxxxx> wrote:
>>>>>>> Never mind. I just realized that it will be easier to build it on top
>>>>>>> of the latest master in any case.
>>>>>>>
>>>>>>> On Mon, May 23, 2016 at 8:32 AM, Victor Denisov <vdenisov@xxxxxxxxxxxx> wrote:
>>>>>>>> Jason,
>>>>>>>>
>>>>>>>> Do you prefer pull requests to be rebased on top of the latest master
>>>>>>>> or should I keep it where I started the development?
>>>>>>>>
>>>>>>>> Thanks,
>>>>>>>> V.
>>>>>>>>
>>>>>>>> On Mon, May 16, 2016 at 8:48 AM, Jason Dillaman <jdillama@xxxxxxxxxx> wrote:
>>>>>>>>> On Thu, May 12, 2016 at 10:45 PM, Victor Denisov <vdenisov@xxxxxxxxxxxx> wrote:
>>>>>>>>>> Jason,
>>>>>>>>>>
>>>>>>>>>> Do you have any opinion regarding deleting images that are in a
>>>>>>>>>> consistency group?
>>>>>>>>>>
>>>>>>>>>> Should we delete them as well as the references in the consistency
>>>>>>>>>> group they belong to or should we prohibit deleting images that are in
>>>>>>>>>> a consistency group?
>>>>>>>>>>
>>>>>>>>>> V.
>>>>>>>>>>
>>>>>>>>>
>>>>>>>>> Right now, if an image has a snapshot we required you to remove all
>>>>>>>>> snapshots before removing the image.  Along those lines, if an image
>>>>>>>>> is in a consistency group and the consistency group has snapshots, the
>>>>>>>>> user wouldn't be able to remove the image since it has snapshots nor
>>>>>>>>> should the user be able to remove the snapshots associated with the
>>>>>>>>> consistency group. In this case, the user would be forced to
>>>>>>>>> dissociate the image from the group before attempting to delete it.
>>>>>>>>> Therefore, just to keep the actions consistent, you might as well
>>>>>>>>> force the user to dissociate an image from the consistency group even
>>>>>>>>> if the image doesn't have snapshots.
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> --
>>>>>>>>> Jason
>>>>>>
>>>>>>
>>>>>>
>>>>>> --
>>>>>> Jason
>>>>
>>>>
>>>>
>>>> --
>>>> Jason
>>
>>
>>
>> --
>> Jason
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