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Road show 2015 triangle meetup
- 1. Wim Provoost (@wimpers_be) Open vStorage (@openvstorage) http://www.openvstorage.com A product by CloudFounders
- 2. CloudFounders vRUN Converged infrastructure that combines the benefits of the hyperconverged approach yet offers independent compute and storage scaling. Open vStorage Core Storage Technology FlexCloud A hosted private cloud based on the vRun technology available at multiple data centers world-wide. A product by CloudFounders
- 3. 2 Types of Storage Block Storage: • EMC, Netapp, ... • Virtual Machines • High perfomance, low latency • Small capacity, typically fixed size • Expensive • Zero-copy snapshots, linked clones • $/IOPS Object Storage: • Swift, Cleversafe, ... • Unstructured data • Low performance, high latency • Large capacity, scalable • Inexpensive, commodity hardware • No high-end datamanagement features • $/GB What is needed is a technology which offers Virtual Machines the performance and high-end features of a SAN but also the benefits of the low cost and scale-out capabilities of object storage!
- 4. What is Open vStorage Open vStorage is an open-source superfast, scalable, VM-centric block storage solution for OpenStack Virtual Machines on top of object storage or a pool of (Kinetic) drives.
- 5. The architecture OpenStack Scale-outVM VM VM VM SSD SSD Open vStorage OpenStack VM VM VM VM SSD SSD Open vStorage OpenStack VM VM VM VM SSD SSD Open vStorage Unified Namespace S3 compatible Object Storage or a pool of (ethernet) drives Tier 1 - Location Based • Read/Write cache on SSD • Block based storage • Thin provisioning • VM Centric • Distributed Transaction Log Tier 2 -Time Based • Zero Copy Snapshot • Zero Copy Cloning • Continuous data protection • Redundant storage • Scale-out
- 6. From 4KB writes to 4MB SCOs SSD or PCI FlashLBA 1: 4k block 1 LBA 2: 4k block 2 LBA 3: 4k block 3 LBA 4: 4k block 4 LBA 5: 4k block 5 LBA 1: 4k block 6 LBA 1: 4k block 7 LBA 3: 4k block 8 LBA 6: 4k block 9 LBA 7: 4k block 10 LBA 8: 4k block 11 LBA 2: 4k block 12 LBA 9: 4k block 13 LBA 10: 4k block 14 New writes SCO 1 4k block 1 4k block 2 4k block 3 4k block 4 4k block 5 4k block 6 4k block 7 SCO 2 4k block 8 4k block 9 4k block 10 4k block 11 4k block 12 4k block 13 4k block 14 LBA 5: 4k block 15 LBA 10: 4k block 16 4k block 15 4k block 16 SCO 3 New writes SCO1 SCO2 Transfer SCOs once they are full (4MB) to the Storage Backend at slow pace Each write is appended to the current Storage Container Object (SCO)
- 7. Optimized storage architecture Powered by Memory & SSD Deduplicated ReadCache: 50,000-70,000 HyperConverged Thin Provisioning & Zero Copy cloning Offload storage maintenance tasks to theTier 2
- 8. Unlimited scalability Grow storage performance by adding more SSDs Grow storage capacity by adding more disks Asymmetric scalability of CPU and storage No bottlenecks No dual controllers
- 9. Hyper Reliability Better than RAID 5 protection Supports Live MigrationZero-shared architecture Synchronized Distributed Transaction Log Unlimited snapshots, longer retentions
- 10. Changes in Open vStorage 2.1 • Improved performance – 50-70k iops per host – Multiple caching devices • HyperConverged!!!!!! – Encryption, compression, forward error correction – Manage a pool of SATA drives as Tier2 storage • Focus on OpenStack/KVM • Improved hardening against failure – Seamless volume migration (no metadata rebuild) Release date: now!
- 11. Deduplicated Clustered Tier One (A pool of Flash) Futher down the road ... • Distributed Clustered Tier One – Uses SSDs across the env. as 1 big shared, deduplicated Tier 1 read cache. – Speed comparable with an All-Flash array: almost all VM I/O will be from flash. – Scale storage performance by adding more SSDs. – Limits impact of an SSD failure. Hot cache in case of Live Migration. OpenStack VM VM VM VM OpenStack VM VM VM VM OpenStack VM VM VM VM SSD SSD SSD SSD SSD SSD SSD SSD hash 4k block hash 4k block hash 4k block Scale-out
- 12. How does OpenStack and Open vStorage play along
- 13. 2 Types of Storage Block Storage: • EMC, Netapp, ... • Virtual Machines • High perfomance, low latency • Small capacity, typically fixed size • Expensive • Zero-copy snapshots, linked clones • $/IOPS Object Storage: • Swift, Cleversafe, ... • Unstructured data • Low performance, high latency • Large capacity, scalable • Inexpensive, commodity hardware • No high-end datamanagement features • $/GB What is needed is a technology which offers Virtual Machines the performance and high-end features of a SAN but also the benefits of the low cost and scale-out capabilities of object storage!
- 14. OpenStack Swift: some highlights • Designed to store unstructered data in a cost-effictive way – Use low cost, large capacity SATA disks – Increase capacity by adding more disk/servers when needed – Increase performance by adding spindles/proxies • High reliability by distributing content across disks – 3 way replication – Erasure coding (on the roadmap) • Easy to manage (no knowledge needed about RAID or volumes) Proxy Proxy Storage Node Storage Node Storage Node
- 15. Cinder: some highlights • Cinder provides an infrastructure/API for managing volumes on OpenStack. – Volume create, delete, list, show, attach, detach, extend – Snapshot create, delete, list, show – Backups create, restore, delete, list, show – Manage volume types, quotas – Migration • By default Cinder uses local disks but plugins allow additional storage solutions to be used: – External appliances: EMC, Netapp, SolidFire – Software solutions: GlusterFS, Ceph, …
- 16. Cinder with local disks has some problems ... computenode01 vm1 vm5 vm6 computenode02 vm2 vm7 computenode03 vm3 vm8 vm9 computenode04 vm4 vm10 vm20 computenode01 vd5 vd1a vd20 vd7b vd8b computenode02 vd7a vd2a vd10 vd6a computenode03 vd8a vd3a vd4a computenode04 vd1b vd4b vd3b Vd2b vd6b I S C S I NovaCinder Management Nightmare!
- 17. A traditional OpenStack setup Nova Instance Management Swift Object Storage Cinder Block Storage Glance Image store VM Provides volume for Provisions Stores image in Stores backups in Provides image for SAN, NAS, ... Provides disk space 2 storage platforms?!
- 18. “Swift under Cinder”? • Eventual consistency (the CAP Theorem) • Latency & performance – VMs require low latency and high performance – Object stores are developed to contain lots of data (large disks, low performance) – Additional latency as Object Store is on the Local LAN instead of attached to the host like DAS • Different Management Paradigms – Object Stores understand Objects <> Hypervisors understand blocks, files
- 19. Open vStorage & OpenStack Nova Instance Management Swift Object Storage Cinder Block Storage Glance Image store VM Provides volume for Provisions Stores image in Stores backups in Provides image for Provides disk spaceOpen vStorageConverts Object Storage into Block Storage
- 20. Get Started with Open vStorage
- 21. Get the software • The unrestricted open-source version – Open vStorage as open-source software is released under the Apache License, Version 2.0 – Backends: S3 compatible object storage (Swift, Ceph, ...) – Free community help-forum : https://groups.google.com/forum/?hl=en#!forum/open-vstorage – You can contribute: https://bitbucket.org/openvstorage/ • Free community version – Open-source version + limited hyperconverged backend (max. 49 volumes, 4 nodes, 16 disks) – Free community help-forum : https://groups.google.com/forum/?hl=en#!forum/open-vstorage • Paying version with 24/7 support (Open vStorage & OpenStack) – GA release June 2015
- 22. • To be released June 2015 – HyperConverged OpenStack Solution – Stackable Chassis: 4 nodes, 10-40TB usable storage – Supported Open vStorage version – Supported OpenStack version (Mirantis) – Monitoring, support and maintenance included – Low cost: • 50% lower than competitors (EVO:RAIL, Nutanix, ...) • Starts at $35,000 for 4 nodes (256GB usable RAM, 3.5TB cache, 10TB usable storage) Open vStorage Based Converged Solution
- 23. In Depth Slides
- 24. Open vStorage <> distributed file system VSA 1 VSA 2 VSA 3 Arakoon – (config params, metadata, ...) vDisk 1 vDisk 2 Internal Bucket vDisk 3 VFS2 VFS3 xml VOL DRV VM VOL DRV Object Router FILE DRV FILE DRV VOL DRV Object Router FILE DRV KVM1 KVM2 KVM3 VFS1 Object Router
- 25. Live Motion – In depth (Phase 1) VSA 1 VSA 2 VSA 3 Arakoon – (config params, metadata, ...) vDisk 1 vDisk 2 Internal Bucket vDisk 3 VFS3 vmx VOL DRV VOL DRV Object Router FILE DRV FILE DRV VM VOL DRV Object Router FILE DRV KVM1 KVM2 KVM3 VFS1 VMLive Motion Object Router VFS2
- 26. Live Motion – In depth (Phase 2) VSA 1 VSA 2 VSA 3 Arakoon – (config params, metadata, ...) vDisk 1 vDisk 2 Internal Bucket vDisk 3 VFS2 VFS3 xml VOL DRV VOL DRV FILE DRV FILE DRV VM VOL DRV Object Router FILE DRV KVM1 KVM2 KVM3 VFS1 VMLive Motion Object Router Handover Object Router
- 27. How does Open vStorage solve the problem • Open vStorage is a middleware layer in between the hypervisor and the object store. (Converts object storage into block storage) – On the host: location based storage (block storage). – On the backend: time based storage (ideal for objects stores). – Open vStorage turns a volume into a single bucket. • OpenStack Cinder Plugin for easy integration (snapshots, ...). • Distributed file systems don’t work! Open vStorage is not a distributed file sysem! – All hosts ‘think’ they see the same virtual file systems. – Volume is ‘live’ on 1 host instead of all hosts. – Only the virtual file system metadata is distributed. • Caching inside the host fixes impedance mismatch between slow, high latency backend and fast, low latency requirement of Virtual Machines.