[openstack-dev] [glance][cinder]Question about cinder as glance store

Rikimaru Honjo honjo.rikimaru at po.ntt-tx.co.jp
Thu Feb 8 09:06:30 UTC 2018


Hello Gorka,

Thank you for replying!
I'll try to run glance-api and cinder-volume on the same node
according to your information.

On 2018/02/07 19:27, Gorka Eguileor wrote:
> On 07/02, Rikimaru Honjo wrote:
>> Hello,
>>
>> I'm planning to use cinder as glance store.
>> And, I'll setup cinder to connect storage by iSCSI multipath.
>>
>> In this case, can I run glance-api and cinder-volume on the same node?
>>
>> In my understanding, glance-api will attach a volume to own node and
>> write a uploaded image to the volume if glance backend is cinder.
>> I afraid that the race condition of cinder-volume's iSCSI operations
>> and glance-api's iSCSI operations.
>> Is there possibility of occurring it?
>> --
>> _/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
>> Rikimaru Honjo
>> E-mail:honjo.rikimaru at po.ntt-tx.co.jp
>>
>>
>>
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> 
> Hi,
> 
> When properly set with the right configuration and the right system and
> OpenStack packages, Cinder, OS-Brick, and Nova no longer have race
> conditions with iSCSI operations anymore (single or multipathed), not
> even with drivers that do "shared target".
> 
> So I would assume that Glance won't have any issues either as long as
> it's properly making the Cinder and OS-Brick calls.
> 
> Cheers,
> Gorka.
> 
> __________________________________________________________________________
> OpenStack Development Mailing List (not for usage questions)
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> 
> 

-- 
_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/_/
Rikimaru Honjo
E-mail:honjo.rikimaru at po.ntt-tx.co.jp





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