[sheepdog-users] dog cluster snapshot problems

[Ruoyu]

On 2014年08月08日 15:33, Liu Yuan wrote:
> On Fri, Aug 08, 2014 at 03:29:51PM +0800, Liu Yuan wrote:
>> On Fri, Aug 08, 2014 at 09:02:13AM +0200, Valerio Pachera wrote:
>>> 2014-08-07 17:33 GMT+02:00 Andrew J. Hobbs <ajhobbs at desu.edu>:
>>>
>>>> The slowness is an issue for me.  In our cluster now, we're already up to
>>>> the cluster snapshot taking more than six hours to complete, whereas the
>>>> backup script runs in less than 2 hours for full, or 10 minutes for the
>>>> incrementals (roughly).
>>>>
>>> Thank you very much for sharing your experience!
>>>
>>>
>>>> I was originally enchanted by the idea of using cluster snapshot, but
>>>> we've been through a few cycles with memory leaks
>>>
>>> I remember the memory leack issue but it was long time ago.
>>> Sure it require more testing.
>>>
>>> I'm curious to hear form the developers if, later on, it will be possible
>>> to have better performance or there are no chances.
>> There are always performance-wise enhancement todos for cluster snapshot due to
>> its present naive implementation. and it is not feature complete. Thanks to Ruoyu
>> effort, we can partially save/restore user specified vdis now and I think there
>> still far away to be feature complete.
>>
> Ruoyu, would you please add a wiki on how to do paritial save/restore? Then
> people can test and make use of this feature.
Done.
Please visit: 
https://github.com/sheepdog/sheepdog/wiki/Backend-Stores%2C-Object-Cache
>
> Thanks
> Yuan