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Hi, Ronen

3) I mean storage based replication. In normal, volume replication support FC or iSCSI. We need to setup FC or iSCSI before we do volume replication.

Case 1)

Host ------FC------Storage A -------iSCSI -------- Storage B ----FC----- Host

Case 2)

Host ------FC------Storage A -------FC -------- Storage B ----FC----- Host

As above diagram, we need to setup connection (iSCSI or FC) between storage A and Storage B.

For FC, we need to zone storage A & storage B in FC switch.

Thanks,
-Ruijing

From: Ronen Kat [mailto:RONENKAT at il.ibm.com]
Sent: Sunday, February 15, 2015 4:46 PM
To: OpenStack Development Mailing List (not for usage questions)
Subject: Re: [openstack-dev] [cinder] documenting volume replication

Hi Ruijing,

Thanks for the comments.
Re (1) - driver can implement replication in any means the driver see fit. It can be exported and be available to the scheduler/drive via the "capabilities" or "driver" extra-spec prefixes.
Re (3) - Not sure I see how this relates to storage side replication, do you refer to host side replication?

Ronen



From:        "Guo, Ruijing" <ruijing.guo at intel.com<mailto:ruijing.guo at intel.com>>
To:        "OpenStack Development Mailing List (not for usage questions)" <openstack-dev at lists.openstack.org<mailto:openstack-dev at lists.openstack.org>>
Date:        15/02/2015 03:41 AM
Subject:        Re: [openstack-dev] [cinder] documenting volume replication
________________________________



Hi, Ronen,

I don't know how to edit https://etherpad.openstack.org/p/cinder-replication-redoc and add some comments in email.

1.     We may add asynchronized and synchronized type for replication.
2.     We may add CG for replication
3.     We may add to initialize connection for replication

Thanks,
-Ruijing

From: Ronen Kat [mailto:RONENKAT at il.ibm.com]
Sent: Tuesday, February 3, 2015 9:41 PM
To: OpenStack Development Mailing List (openstack-dev at lists.openstack.org<mailto:openstack-dev at lists.openstack.org>)
Subject: [openstack-dev] [cinder] documenting volume replication

As some of you are aware the spec for replication is not up to date,
The current developer documentation, http://docs.openstack.org/developer/cinder/api/cinder.volume.driver.html, cover replication but some folks indicated that it need additional details.

In order to get the spec and documentation up to date I created an Etherpad to be a base for the update.
The Etherpad page is on https://etherpad.openstack.org/p/cinder-replication-redoc

I would appreciate if interested parties would take a look at the Etherpad, add comments, details, questions and feedback.

Ronen, __________________________________________________________________________
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