-n, --numeric print numeric user/group identifiers© XXX Page 22 of 33 -p, --absolute-names don't strip leading '/' in pathnames -v, --version print version and exit -h, --help

TYPE_FILE, TYPE_SYM_LINK, }; class VolumeSpaceItem { uint64_t volumeOffset; // uint64_t length; // bool used; // // TODO: }; class Inode { public: Inode(); private: 6 of 24 4.2 dentry的定义： dentry定义见：curve文件系统元数据proto（代码接口定义，已实现） typedef uint64_t InodeId; class Dentry{ uint64_t fsId; InodeId parentId; InodeId inode; string name; }; 4.3 内存组织 in case 3: deal 3 break } err handle } inode和dentry的内存管理结构 class InodeKey { uint64_t fsId; InodeId inodeId; }; class InodeManager { public: void Insert(const Inode &inode); bool Get(const

S3ChunkInfoList> s3ChunkInfoMap = 14; // TYPE_S3 only, first is chunk index optional uint64 version = 15; } class ClientS3Adaptor { public: ClientS3Adaptor () {} void Init(const S3ClientAdaptorOption option std::shared_ptr fsCacheManager_; std::shared_ptr inodeManager_; }; class S3ClientAdaptor; class ChunkCacheManager; class FileCacheManager; class FsCacheManager; using FileCacheManagerPtr = std::shared_ptr; using using ChunkCacheManagerPtr = std::shared_ptr; using DataCachePtr = std::shared_ptr; class FsCacheManager { public: FsCacheManager() {} FileCacheManagerPtr FindFileCacheManager(uint32_t fsId, uint64_t

应文件。 同时，缓存清理模块会定时检查本地硬盘缓存目录容量情况，如果容量已经达到阈值了，则进行文件的清理工作。 另外，异常管理模块处理客户端挂掉后的文件重新上传问题。 主要数据结构定义 class DiskCacheManagerImpl : public DiskCacheManager{ public: DiskCacheManagerImpl(); virtual std::set cachedObjName; // uint64_t maxCachedObj; // ? bthread::Mutex mtx_; }; class DiskCacheWrite { public: DiskCacheWrite() {} virtual ~DiskCacheWrite() { AsyncUploadStop(); curve::common::InterruptibleSleeper sleeper_; std::string CacheWriteDir_; std::string CacheDir_; }; class DiskCacheRead { public:© XXX Page 7 of 9 DiskCacheRead() {} virtual ~DiskCacheRead() {}

volume = 10; optional common.S3Info s3Info = 11; } client端数据结构© XXX Page 5 of 11 // clients3 class S3ClientAdaptor { public: S3ClientAdaptor() {} void Init(const S3ClientAdaptorOption option buf); private: S3Client* client_; uint64_t blockSize_; uint64_t chunkSize_; }; //s3 class S3Client { public: S3Client() {} virtual ~S3Client() {} virtual void Init(curve::com (UnInitSpaceResponse); rpc AllocateS3Chunk(AllocateS3ChunkRequest) returns (AllocateS3ChunkResponse); } class S3Allocator { public: explicit S3Allocator(uint64_t startChunkId) : chunkId_(startChunkId) {}©

(DeallocateSpaceResponse); } 空间分配器接口 空间分配器相关接口及部分数据结构定义如下： #include #include enum class AllocateType { NONE = 0, SMALL = 1, BIG = 2 }; struct AllocateHint { AllocateType Extent { uint64_t offset = 0; uint32_t len = 0; }; using Extents = std::vector; class Allocator { public: Allocator(...) {} virtual ~Allocator() = default;© XXX Page 10 of 11

API），Raft 等可以后续接入（目前实现中持久化可以在 KVStore 退出时触发持久化，或定时持久化）© XXX Page 8 of 12 class KVStore : public braft::StateMachine { public: enum class OP_TYPE { OP_TYPE_SET, OP_TYPE_DEL, }; public: bool Init();

继续申请新的 Bundle 首次连接 etcd etcd 环境切换 storeKey_ 被删除 其他 storeKey_ 在etcd上的Value不可解码 返回一个新的chunkid 方案 class ChunkIDGenerator { client_; // etcd chunkIdStoreKey_; // chunkid 存储在etcd上的 key nextId_; //

on-prem OSSCurveBS • high performance • mainly used for (SSD, three replicas) • csi / storage class for kubernete, nbd for HOST/VMPerformance (vs. Ceph RBD)Performance (vs. Ceph RBD)CurveBS Features