Interacts with the chunkServer to read and write data 4. Snapshotcloneserver l Independent of core services l Snapshot data is stored in object storage which supports S3 apis. Therefore, there is no limit Client 1. CurveBS client provides services by libCurve. At first, external processes such as QEMU, Cinder, and NBD use it to access storage services provided by Curve. The client provids posix-like Through the above splitting, NebdClient replaces Curve Client and directly interfaces with upper services. There is no logical processing in NEBDClient, it just proxy requests and has limited retries

* limitations under the License. */ syntax="proto2"; package curvefs.mds; option cc_generic_services = true; enum FSStatusCode { OK = 0; // UNKNOWN_ERROR = 1; // NOSPACE limitations under the License. */ syntax="proto2"; package curvefs.metaserver; option cc_generic_services = true; enum MetaStatusCode { OK = 0; // UNKNOWN_ERROR = 1; // NOSPACE * limitations under the License. */ syntax="proto2"; package curvefs.space; option cc_generic_services = true; enum SpaceStatusCode { OK = 0; // UNKNOWN_ERROR = 1; // NOSPACE

postgresql using CurveBS • Cloud-native support for CurveBS • CurveBS clusters and related monitoring services can be configured using CRDs in public cloud and on- premises environments • Use the Curve operator tiering support • Cloud-native support for CurveFS • CurveFS clusters and related monitoring services can be configured using CRDs in public cloud and on- premises environments • Use the Curve operator

复制到 proto/space.proto/service/MdsService中; curvefs/src/mds/mds_services.h MdsServiceImp类中增加 AllocateS3Chunk 实现； curvefs/src/mds/mds_services.h MdsServiceImp类中增加 ChunkIDGenerator 类对象，方法 AllocateS3Chunk 调用

architecture ● CURVE provides underlying distributed shared storage services ● Polardb for PostgreSQL provides database services Solution features ● seperation between storage and computation ●

on-prem (baremetal, HDFS, OSS) and turns it into container-native storageDatabase • Database services orchestrated in the cloud • Curve can backup / sync data to slave cloud • When master cloud

如何用CLup管理Polardb 4008878716 services@csudata.com http://www.csudata.com 中启乘数科技 @http://www.csudata.com │中启乘数科技（杭州）有限公司 数据赋能│价值创新 关于我 《PostgreSQL修炼之道：从小工到专家》的作者，中 启乘数科技联合创始人，PostgreSQL中国用户会常委。 从

CurveFS Client 概要设计（已实现）#%E6%8E%A5%E5%8F%A3%E9%9C%80%E6%B1%82 syntax="proto2"; option cc_generic_services = true; enum StatusCode { UNKNOWN_ERROR = 0; // OK = 1; // NOSPACE =