cluster status and schedule. 2. Chunkserverl Responsible for data storage l Multi-replicas consistency 3. The client l Provides read and write data interfaces for upper-layer applications l scattered, the probability of replication group failure increases.Data consistency in CurveBS CurveBS uses RAFT as a consistency protocol. The figure above is from the RAFT paper(https://raft.github github.io/raft.pdf). CurveBS uses BRaft to implement the consistency protocol. For CurveBS 1. A CopySet, as the basic unit of a consistent replication group, contains Consensus Module and Log Module

for HOST/VMPerformance (vs. Ceph RBD)Performance (vs. Ceph RBD)CurveBS Features • RAFT for data consistency • minor impaction when chunk server fails • Precreated chunk file for volume space mapping storage and on-prem storage) and expose unified file space for app accessing • RAFT for data consistency • POSIX-compatiable • Cloud native supportCloud native plan for CurveFS • CSI plugin for CurveFS

Estimation of availability and reliability in CurveBS CurveBS uses the RAFT protocol to maintain consistency of stored data. It generally takes the form of 3 replicas of data. If one replica fails, the

High availability and reliability ● Cluster topology ● CopySet pre-allocation algorithm ● Raft Consistency protocol High performance ● pre-created file pool ● data strip like RAID ● Zero data copy

se:build-debian11 # 容器内 cd /curve/curvefs make build os=debian11 # 容器外 # curvefs sudo make image os=debian11 tag=harbor.cloud.netease.com/curve/curvefs:chengyi01-debian113 修改 & 单元测试 curvefs/t