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Open vStorage Road show 2015 Q1
- 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! 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 software solution which creates a VM-centric, reliable, scale out and high performance storage layer for OpenStack Virtual Machines on top of object storage or a pool of Kinetic drives.
- 5. Open vStorage Feature Set HyperFast Scalable Reliable VM-Centric Open-source Low TCO
- 6. The architecture OpenStack Scale-outVM VM VM VM SSDSSD SSDSSD Open vStorage Open vStorage OpenStack VM VM VM VM SSDSSD SSDSSD Open vStorage Open vStorage OpenStack VM VM VM VM SSDSSD SSDSSD Open vStorage Open vStorage Unified Namespace S3 compatible Object Storage or a pool of Kinectic Drives S3 compatible Object Storage or a pool of Kinectic Drives Tier 1 - Location Based •Read/Write cache on SSD •Block based storage •Thin provisioning •VM Centric •Distributed Transaction Log 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 Tier 2 -Time Based •Zero Copy Snapshot •Zero Copy Cloning •Continuous data protection •Redundant storage •Scale-out
- 7. Optimized storage architecture Powered by Memory & SSD Deduplicated Read Cache: more effective use of Tier 1 storage. Zero copy cloning with linked clones Thin Provisioning Offload storage maintenance tasks to the Tier 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 More reliable than raid5 Supports Live MigrationZero-shared architecture Synchronized Distributed Transaction Log Unlimited snapshots, longer retentions
- 10. Changes in Open vStorage 2 (End Q1 2015) • Improved performance (x3) by tight integration with QEMU – 50-70k iops per host – Removes the NFS & FUSE performance loss • Improved hardening against failure – Seamless volume migration (no metadata rebuild) – Limited impact of SSD failure • Support for Seagate Kinetic drives as storage backend – Encryption, compression, forward error correction – Manage a pool of Kinetic drives as Tier2 storage • Focus on OpenStack/KVM
- 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 SSDSSD SSDSSD SSDSSD SSDSSD SSDSSD SSDSSD SSDSSD SSDSSD hashhash 4k block4k block hashhash 4k block4k block hashhash 4k block4k 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! 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) ProxyProxy ProxyProxy Storage Node Storage Node Storage Node 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 ... I S C S I NovaCinder ManagementN ightmare!
- 17. A traditional OpenStack setup Nova Instance Management Nova Instance Management Swift Object Storage Swift Object Storage Cinder Block Storage Cinder Block Storage Glance Image store Glance Image store VMVM Provides volume for Provisions Stores image in Stores backups in Provides image for SAN, NAS, ... SAN, NAS, ... Provides disk space 2 storage platforms?!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 Nova Instance Management Swift Object Storage Swift Object Storage Cinder Block Storage Cinder Block Storage Glance Image store Glance Image store VMVM Provides volume for Provisions Stores image in Stores backups in Provides image for Provides disk spaceOpen vStorageOpen vStorageConverts Object Storage into Block Storage
- 20. Get Started with Open vStorage
- 21. Get the software • Open vStorage as open-source software is released under the Apache License, Version 2.0 – Free to use even in commercial products – Open and free community help-forum : https://groups.google.com/forum/?hl=en#! forum/open-vstorage – You can contribute: https://bitbucket.org/openvstorage/ • Actively building a community – Port of Open vStorage to CentOS – Bug reporting and fixing – Provide POC for new features – ...
- 22. • To be released end Q1 2015 – Storage appliance + Open vStorage storage software – Start package: 48TB storage + license for Open vStorage (No restriction on amount of RAM, CPU and SSDs) – Supported Open vStorage version – Monitoring, support and maintenance included – Low cost pricing – ... Open vStorage Based Storage Solution
- 23. • To be released end Q1 2015 – Converged OpenStack Solution based on Kinetic drives – Starter package: 4 compute nodes, 48TB storage – Supported Open vStorage version – Supported OpenStack version – Monitoring, support and maintenance included – Low cost: • 50% lower than EVO:RAIL • 50% lower than Nutanix Open vStorage Based Converged Solution
- 24. Summary
- 25. Open vStorage Summary • +50.000 IOPS per Hypervisor • Made for OpenStack Virtual Machines • Unified Namespace • Ultra Reliable • Unlimited Snapshots • Endless scalability for both capacity and storage performance • Lowest Management Cost In Market S3 compatible Object Based Storage S3 compatible Object Based Storage Hypervisor Open v StorageOpen v Storage Hypervisor Open v StorageOpen v Storage Hypervisor Open v StorageOpen v Storage Hypervisor Open vStorageOpen vStorage Pool of Kinetic Drives Pool of Kinetic Drives
- 26. Technical Slides
- 27. Solving Eventual Consistency using time based approach SSD or PCI FlashLBA 1:LBA 1: 4k block 14k block 1 LBA 2:LBA 2: 4k block 24k block 2 LBA 3:LBA 3: 4k block 34k block 3 LBA 4:LBA 4: 4k block 44k block 4 LBA 5:LBA 5: 4k block 54k block 5 LBA 1:LBA 1: 4k block 64k block 6 LBA 1:LBA 1: 4k block 74k block 7 LBA 3:LBA 3: 4k block 84k block 8 LBA 6:LBA 6: 4k block 94k block 9 LBA 7:LBA 7: 4k block 104k block 10 LBA 8:LBA 8: 4k block 114k block 11 LBA 2:LBA 2: 4k block 124k block 12 LBA 9:LBA 9: 4k block 134k block 13 LBA 10:LBA 10: 4k block 144k block 14 New writes SCO 1 4k block 14k block 1 4k block 24k block 2 4k block 34k block 3 4k block 44k block 4 4k block 54k block 5 4k block 64k block 6 4k block 74k block 7 SCO 2 4k block 84k block 8 4k block 94k block 9 4k block 104k block 10 4k block 114k block 11 4k block 124k block 12 4k block 134k block 13 4k block 144k block 14 LBA 5:LBA 5: 4k block 154k block 15 LBA 10:LBA 10: 4k block 164k block 16 4k block 154k block 15 4k block 164k block 16 SCO 3 New writes SCO1 SCO2 Transfer SCOs once they are full (4MB) to the Storage Backend at slow pace 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) Each write is appended to the current Storage Container Object (SCO)
- 28. Open vStorage <> distributed file system VSA 1 VSA 2 VSA 3 Arakoon – (config params, metadata, ...) vDisk 1 vDisk 1 vDisk 2 vDisk 2 Internal Bucket vDisk 3 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
- 29. Live Motion – In depth (Phase 1) VSA 1 VSA 2 VSA 3 Arakoon – (config params, metadata, ...) vDisk 1 vDisk 1 vDisk 2 vDisk 2 Internal Bucket vDisk 3 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
- 30. Live Motion – In depth (Phase 2) VSA 1 VSA 2 VSA 3 Arakoon – (config params, metadata, ...) vDisk 1 vDisk 1 vDisk 2 vDisk 2 Internal Bucket vDisk 3 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
- 31. 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.