Let's debunk the first myth, Cinder is not software defined storage trying to replace existing storage systems. Rather, Cinder is really a storage management abstraction layer for orchestration between virtual machines and storage systems. However, Cinder does utilise Linux's built-in LVM to provide storage intelligence to JBOD storage devices. Therefore it is possible to connect JBOD to a Cinder storage node and perform Cinder storage features such as snapshots. More to come on Cinder when the design sessions start on Wednesday.
Fibre Channel Support for Cinder
Grizzly brought very basic support for Fibre Channel (FC) and previously (in Folsom) Cinder only supported iSCSI. People ask:
- Why support FC?
- Isn't FC dead?
- Isn't FC support just a bridge until everyone goes iSCSI?
- Only supports KVM hypervisor
- Manual zoning setup
- No LUN or host authentication (i.e. security concerns)
- HP 3PAR has the only driver supported
At the analyst day, the OpenStack foundation did a good job of organising lots of end-users to come in, present, and share their OpenStack experiences with the analysts. End-user experiences presented:
- Best Buy
- Intel internal IT cloud
- AT&T Synaptic Cloud
- HP Cloud
- Cisco WebEx
- Organisations are putting portions of services in production with OpenStack
- Most deployed Essex & are skipping Folsom to upgrade straight to Grizzly. Upgrading OpenStack, requiring downtime & organisation believe Grizzly's features are overwhelmingly compelling
- Complaints around OpenStack Swift with regards to long distance replication. IDC is going to dig deeper into this issue & provide an update later in the summit
- Ceph seems to be getting some traction as the duel purpose block and object store
- OpenStack installation requires significant engineering for production & maintenance