[sheepdog] problems about `dog vdi object location` when node is in gateway mode

[Hitoshi Mitake]

At Tue, 9 Dec 2014 10:21:04 +0800,
Jinzhi Chen wrote:
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> hi,
>     when a new gateway (never joined a cluster before) joins a existing
> cluster (already formatted), `dog vdi object location` will cause the new
> gateway exit.
>     It's mainly because the new joined gateway's backend storage is not
> initialized(`sd_store` is not initialized), and `dog vdi object location`
> cause it using uninitialized pointer (sd_store->exist).
>     maybe we could check whether a node is in gateway mode in
> `local_oid_exist` function.
> and if that node is gateway, just return SD_RES_NO_OBJ.

Thanks for reporting and the above solution seems good to me. Could
you create a patch for this problem?

Thanks,
Hitoshi

> 
> 
> Thanks
> Jinzhi Chen
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