Wrong: Cinder LVM is also a shared backend from the perspective of live migration. In either case, Nova handles volume-backed instances differently during live migration. The important distinction in this context is for ephemeral disks: these will require block migration if local storage on compute nodes is used instead of Ceph.
On Tue, Jun 24, 2014 at 5:30 AM, Bogdan Dobrelya <[email protected]> wrote: > On 06/12/2014 11:42 AM, Meg McRoberts wrote: > > Hi, all, > > I want to do some work on our docs about Storage. Here are the main > > pieces we have now: > > > > > http://docs.mirantis.com/openstack/fuel/fuel-5.0/reference-architecture.html#storage-nodes > > > > > http://docs.mirantis.com/openstack/fuel/fuel-5.0/reference-architecture.html#storage-architecture > > > > Also a few terminology articles that need more work. > > > > What I want to have: > > - Section in the Planning Guide about choosing the storage deployment > > - Section in the Reference Architecture that gives a view of how the > various > > storage options work -- not quite as detailed as what is in the > > individual docs > > for Ceph, Swift, Cinder, Glance, etc but just a bit of info. > > Especially important > > is to document specifics about how Fuel implements storage > > We should also elaborate which storage backends Fuel deploys as a > *shared* storage (Ceph) and which ones - as non shared (Cinder LVM). > That is important for understanding then user could expect either the > live migration or only live-block migration will work. > > > - If appropriate, a section in the Operations Guide about > > advanced/specialized > > configurations and such one might want to implement. > > > > If anyone has any prose lying around that would be useful, I welcome > > it. I would > > also be interested in hearing what the common questions are that people > ask > > and, of course, volunteers to review what I write. > > > > Thanks much! > > meg > > > > > > > -- > Best regards, > Bogdan Dobrelya, > Skype #bogdando_at_yahoo.com > Irc #bogdando > > -- > Mailing list: https://launchpad.net/~fuel-dev > Post to : [email protected] > Unsubscribe : https://launchpad.net/~fuel-dev > More help : https://help.launchpad.net/ListHelp > -- Dmitry Borodaenko
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