There's a related issue: SOLR-5340 - Add support for named snapshots.
I think we'd want this in SolrCloud soon.

https://issues.apache.org/jira/browse/SOLR-5340

On Tue, Feb 18, 2014 at 7:23 PM, Daniel Bryant
<daniel.bry...@tai-dev.co.uk> wrote:
> Hi Shawn, Michael,
>
> Many thanks for your responses - we're going to try the replication/backup
> command, as we're thinking this is a 'two bird with one stone' approach
> which will not only allow us to copy the indexes, but also help with backups
> in SolrCloud as well.
>
> Thanks again to you both!
>
> Best wishes,
>
> Daniel
>
>
>
>
> On 17/02/2014 20:25, Michael Della Bitta wrote:
>>
>> I do know for certain that the backup command on a cloud core still works.
>> We have a script like this running on a cron to snapshot indexes:
>>
>> curl -s '
>>
>> http://localhost:8080/solr/#{core}/replication?command=backup&numberToKeep=4&location=/tmp
>> '
>>
>> (not really using /tmp for this, parameters changed to protect the guilty)
>>
>> The admin handler for replication doesn't seem to be there, but the actual
>> API seems to work normally.
>>
>> Michael Della Bitta
>>
>> Applications Developer
>>
>> o: +1 646 532 3062
>>
>> appinions inc.
>>
>> "The Science of Influence Marketing"
>>
>> 18 East 41st Street
>>
>> New York, NY 10017
>>
>> t: @appinions <https://twitter.com/Appinions> | g+:
>>
>> plus.google.com/appinions<https://plus.google.com/u/0/b/112002776285509593336/112002776285509593336/posts>
>> w: appinions.com <http://www.appinions.com/>
>>
>>
>> On Mon, Feb 17, 2014 at 2:02 PM, Shawn Heisey <s...@elyograg.org> wrote:
>>
>>> On 2/17/2014 8:32 AM, Daniel Bryant wrote:
>>>>
>>>> I have a production SolrCloud server which has multiple sharded indexes,
>>>> and I need to copy all of the indexes to a (non-cloud) Solr server
>>>> within our QA environment.
>>>>
>>>> Can I ask for advice on the best way to do this please?
>>>>
>>>> I've searched the web and found solr2solr
>>>> (https://github.com/dbashford/solr2solr), but the author states that
>>>> this is best for small indexes, and ours are rather large at ~20Gb each.
>>>> I've also looked at replication, but can't find a definite reference on
>>>> how this should be done between SolrCloud and Solr?
>>>>
>>>> Any guidance is very much appreciated.
>>>
>>> If the master index isn't changing at the time of the copy, and you're
>>> on a non-Windows platform, you should be able to copy the index
>>> directory directly.  On a Windows platform, whether you can copy the
>>> index while Solr is using it would depend on how Solr/Lucene opens the
>>> files.  A typical Windows file open will prevent anything else from
>>> opening them, and I do not know whether Lucene is smarter than that.
>>>
>>> SolrCloud requires the replication handler to be enabled on all configs,
>>> but during normal operation, it does not actually use replication.  This
>>> is a confusing thing for some users.
>>>
>>> I *think* you can configure the replication handler on slave cores with
>>> a non-cloud config that point at the master cores, and it should
>>> replicate the main Lucene index, but not the config files.  I have no
>>> idea whether things will work right if you configure other master
>>> options like replicateAfter and config files, and I also don't know if
>>> those options might cause problems for SolrCloud itself.  Those options
>>> shouldn't be necessary for just getting the data into a dev environment,
>>> though.
>>>
>>> Thanks,
>>> Shawn
>>>
>>>
>
> --
> *Daniel Bryant  |  Software Development Consultant  | www.tai-dev.co.uk
> <http://www.tai-dev.co.uk/>*
> daniel.bry...@tai-dev.co.uk <mailto:daniel.bry...@tai-dev.co.uk>  |  +44 (0)
> 7799406399  |  Twitter: @taidevcouk <https://twitter.com/taidevcouk>



-- 
Regards,
Shalin Shekhar Mangar.

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