Crate nydus_service

Nydus Image Service Management Framework

The nydus-service crate provides facilities to manage Nydus services, such as:

• blobfs: share processed RAFS metadata/data blobs to guest by virtio-fs, so the RAFS filesystem can be mounted by EROFS inside guest.
• blockdev: compose processed RAFS metadata/data as a block device, so it can be used as backend for virtio-blk.
• fscache: cooperate Linux fscache subsystem to mount RAFS filesystems by EROFS.
• fuse: mount RAFS filesystems as FUSE filesystems.

Re-exports

• pub use blob_cache::BlobCacheMgr;

Modules

• blob_cache
  Blob cache manager to cache RAFS meta/data blob objects.
• daemon
  Infrastructure to define and manage Nydus service daemons.
• upgrade
  Online upgrade manager for Nydus daemons and filesystems.

Structs

• FsBackendCollection
  List of FsBackendDescriptor, providing filesystem metrics and statistics information.
• FsBackendDescriptor
  Backend filesystem descriptor.
• FsBackendMountCmd
  Request structure to mount a filesystem instance.
• FsBackendUmountCmd
  Request structure to unmount a filesystem instance.
• FsCacheHandler
  Handler to cooperate with Linux fscache driver to manage cached blob objects.
• FusedevDaemon
  Nydus daemon to implement FUSE servers by accessing /dev/fuse.

Enums

• Error
  Error code related to Nydus library.
• FsBackendType
  Type of supported backend filesystems.

Traits

• FsService
  Abstract interfaces for filesystem service provider.
• ServiceArgs
  Trait to get configuration options for services.

Functions

• create_daemon
  Create and start a Nydus daemon to host fscache and fusedev services.
• create_fuse_daemon
  Create and start a FusedevDaemon instance.
• create_vfs_backend
  Create vfs backend with rafs or passthrough as the fuse filesystem driver
• validate_threads_configuration
  Validate thread number configuration, valid range is [1-1024].

Type Definitions

• Result
  Specialized Result for Nydus library.