[Gluster-devel] Question on merging zfs snapshot support into the mainline glusterfs

Tue Jul 12 10:22:59 UTC 2016

Hi Rajesh,

Sure thanks.

Sriram

On Tue, Jul 12, 2016, at 03:07 PM, Rajesh Joseph wrote:
> Hi Sriram,
> The interface is not yet finalized. May be this is the right time to
> re-ignite discussion on this.
> I can create an etherpad which will explain the initial thoughts and
> design ideas on the same.
> Thanks & Regards,
> Rajesh
>
> On Mon, Jul 11, 2016 at 11:57 PM, <sriram at marirs.net.in> wrote:
>> __
>> Hi Rajesh,
>>
>> Could you let us know the idea on how to go about this?
>>
>> Sriram
>>
>>
>> On Wed, Jul 6, 2016, at 03:18 PM, Pranith Kumar Karampuri wrote:
>>> I believe Rajesh already has something here. May be he can post an
>>> outline so that we can take it from there?
>>>
>>> On Tue, Jul 5, 2016 at 10:52 PM, <sriram at marirs.net.in> wrote:
>>>> __
>>>> Hi,
>>>>
>>>> I tried to go through the patch and find the reason behind the
>>>> question posted. But could'nt get any concrete details about the
>>>> same.
>>>>
>>>> When going through the mail chain, there were mentions of generic
>>>> snapshot interface. I'd be interested in doing the changes if you
>>>> guys could fill me with some initial information. Thanks.
>>>>
>>>> Sriram
>>>>
>>>>
>>>> On Mon, Jul 4, 2016, at 01:59 PM, B.K.Raghuram wrote:
>>>>> Hi Rajesh,
>>>>> I did not want to respond to the question that you'd posed on the
>>>>> zfs snapshot code (about the volume backend backup) as I am not
>>>>> too familiar with the code and the person who's coded it is not
>>>>> with us anymore. This was done in bit of a hurry so it could be
>>>>> that it was just kept for later..
>>>>>
>>>>> However, Sriram who is cc'd on this email, has been helping us by
>>>>> starting to look at the gluster code  and has expressed an
>>>>> interest in taking the zfs code changes on. So he can probably dig
>>>>> out an answer to your question. Sriram, Rajesh had a question on
>>>>> one of the zfs related patches -
>>>>> (https://github.com/fractalio/glusterfs/commit/39a163eca338b6da146f72f380237abd4c671db2#commitcomment-18109851)
>>>>>
>>>>> Sriram is also interested in contributing to the process of
>>>>> creating a generic snapshot interface in the gluster code which
>>>>> you and Pranith mentioned above. If this is ok with you all, could
>>>>> you fill him in on what your thoughts are on that and how he could
>>>>> get started?
>>>>> Thanks!
>>>>> -Ram
>>>>>
>>>>> On Wed, Jun 22, 2016 at 11:45 AM, Rajesh Joseph
>>>>> <rjoseph at redhat.com> wrote:
>>>>>>
>>>>>>
>>>>>> On Tue, Jun 21, 2016 at 4:24 PM, Pranith Kumar Karampuri
>>>>>> <pkarampu at redhat.com> wrote:
>>>>>>> hi,
>>>>>>>       Is there a plan to come up with an interface for snapshot
>>>>>>>       functionality? For example, in handling different types of
>>>>>>>       sockets in gluster all we need to do is to specify which
>>>>>>>       interface we want to use and ib,network-socket,unix-domain
>>>>>>>       sockets all implement the interface. The code doesn't have
>>>>>>>       to assume anything about underlying socket type. Do you
>>>>>>>       guys think it is a worthwhile effort to separate out the
>>>>>>>       logic of interface and the code which uses snapshots? I
>>>>>>>       see quite a few of if (strcmp ("zfs", fstype)) code which
>>>>>>>       can all be removed if we do this. Giving btrfs snapshots
>>>>>>>       in future will be a breeze as well, this way? All we need
>>>>>>>       to do is implementing snapshot interface using btrfs
>>>>>>>       snapshot commands. I am not talking about this patch per
>>>>>>>       se. Just wanted to seek your inputs about future plans for
>>>>>>>       ease of maintaining the feature.
>>>>>>
>>>>>>
>>>>>> As I said in my previous mail this is in plan and we will be
>>>>>> doing it. But due to other priorities this was not taken in yet.
>>>>>>
>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> On Tue, Jun 21, 2016 at 11:46 AM, Atin Mukherjee
>>>>>>> <amukherj at redhat.com> wrote:
>>>>>>>>
>>>>>>>>
>>>>>>>> On 06/21/2016 11:41 AM, Rajesh Joseph wrote:
>>>>>>>>  > What kind of locking issues you see? If you can provide some
>>>>>>>>  > more information I can be able to help you.
>>>>>>>>
>>>>>>>> That's related to stale lock issues on GlusterD which are there
>>>>>>>> in 3.6.1 since the fixes landed in the branch post 3.6.1. I
>>>>>>>> have already provided the workaround/way to fix them [1]
>>>>>>>>
>>>>>>>>  [1]http://www.gluster.org/pipermail/gluster-users/2016-June/thread.html#26995
>>>>>>>>
>>>>>>>>  ~Atin
>>>>>>>>
>>>>>>>> _______________________________________________
>>>>>>>>  Gluster-devel mailing list Gluster-devel at gluster.org
>>>>>>>>  http://www.gluster.org/mailman/listinfo/gluster-devel
>>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> --
>>>>>>> Pranith
>>>>>>>
>>>>>>
>>>>
>>>
>>>
>>>
>>> --
>>> Pranith
>>

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