Abstract: Techniques for performing fine-grained metadata management in a distributed file system (DFS) are provided. In one embodiment, each node in a plurality of nodes implementing the DFS can execute a namespace metadata service that is dedicated to managing file system metadata pertaining to one or more namespaces of the DFS. Each node can further execute a data metadata service that is distinct from the namespace metadata service, where the data metadata service is dedicated to managing file system metadata pertaining to properties of data and free space in the DFS.

Abstract: Processing in an asymmetrically distributed file system may include storing first data representative of the content of the files in a file system volume among a plurality of storage nodes. Second data representative of attributes of the files in the file system volume may be stored in only one of the storage nodes. Time-limited leases allow clients direct access to the plurality of storage node in order to access portions of the file system volume. The time-limited leases may be provided to client lessors. Snapshots of the file system volume may be generated after sending a revocation to the client lessors to revoke time-limited leases provided to the client lessors and having received the acknowledgements of the revocations or after the leases have expired for non-responding lessors, to ensure that changes are not made to the file system volume during snapshot processing.

Abstract: A method includes receiving a trace of a job in a distributed computing system and a topology of the system and determining performance indicators of each virtual node's (1) busyness from executing its share of local resource and network dependent tasks in the job, (2) efficiency for executing its share of the local resource tasks, and (3) efficiency for executing its share of the network dependent tasks. The method includes aggregating performance indicators of each host's virtual nodes and determining if one of the hosts is least efficient in executing its share of the local resource and the network dependent tasks. If so, the method includes determining if the one host is less busy from executing it share of the local resource and the network dependent tasks than other hosts. If not, the method includes reporting the one host's busiest virtual node as a candidate of processor error.

Abstract: Examples perform input/output (I/O) requests, issued by a plurality of clients to an owner-node, in a virtual storage area network (vSAN) environment. I/O requests are guaranteed, as all I/O requests are performed during non-overlapping, exclusive sessions between one client at a time and the owner node. The owner node rejects requests for simultaneous sessions, and duplicate sessions are prevented by requiring that a client refresh its memory state after termination of a previous session.

Abstract: A woven fiber optics dental post includes a post body and a woven fiber component. The post body includes a post face, an irradiation receiving portion, and a bottom. The woven fiber component is provided within the post body. The woven fiber component is formed by intertwining a plurality of fiber optics members. A light receiving end portion and a light emitting end portion are respectively composed of a plurality of light receiving ends and light emitting ends of the fiber optics members. The light receiving end portion is appeared on the irradiation receiving portion of the post body for having the woven fiber component receiving a light irradiated at the irradiation receiving portion, and the light emitting end portion is appeared on the post face and/or the bottom of the post body for having the light received by the woven fiber component transmitting to the light emitting end portion to be emitted out of the post face and/or the bottom.

Abstract: The present invention provides a bone connection material that includes an internal layer. The internal layer is formed by braiding a plurality of filaments. The internal layer that is formed by braiding filaments is resistant to lateral shearing forces and may provide flexibility so as to achieve wide applications. Further, the present invention overcomes the drawback of the conventionally used metallic materials that are rigid and inelastic and also overcomes the problem of polylactic acid material of being brittle. Thus, the bone formed according to the present invention is close to a natural bone and is more suitable for uses in portions where frequent movements are made and scaffolds of stem cells.

Abstract: Disclosed is a bioglass fiber dental implant with fiber material and structure including a fixture and a peripheral junction. The fixture is arranged for osseointegrating a bone of the jaw or skull. The peripheral junction is connected to the fixture and is arranged for connecting an abutment supporting a dental prosthesis. The fixture and the peripheral junction are constituted of fiber-enhanced resin. The fibers in the fiber-enhanced resin form a woven fiber structure which includes a center fiber shaft provided straightly through the woven fiber structure and includes a plurality of braided fiber shafts interlaced-knitted around the center fiber shaft. Each fiber in the fiber-enhanced resin has one or more layers.

Abstract: The present invention provides a bone connection material that includes an internal layer. The internal layer is formed by braiding a plurality of filaments. The internal layer that is formed by braiding filaments is resistant to lateral shearing forces and may provide flexibility so as to achieve wide applications. Further, the present invention overcomes the drawback of the conventionally used metallic materials that are rigid and inelastic and also overcomes the problem of polylactic acid material of being brittle. Thus, the bone formed according to the present invention is close to a natural bone and is more suitable for uses in portions where frequent movements are made and scaffolds of stem cells.

Abstract: An optical fiber with image enhancement is provided with, in combination an elongated optical fiber unit including an image input surface on a bottom, an image output surface on a top, and a light guide member between the image input surface and the image output surface. The elongated optical fiber unit is a triangular sectional structure having a vertical surface and an inclined surface, and length of the image output surface is greater than that of the image input surface. The elongated optical fiber unit is configured to seamlessly fasten in a joining portion of two rectangular panels so that light is configured to pass through the image input surface, the light guide member, and the image output surface.

Abstract: An example method to allocate a virtual disk for a virtual machine in a virtualized computing system includes allocating a plurality of virtual machine disk file (VMDK) candidates in a virtual machine file system (VMFS) volume, selecting a subset of VMDK candidates from the plurality of VMDK candidates for having performance scores indicative of higher I/O throughputs associated with the one or more physical hard disks than rest of the plurality of VMDK candidates, and configuring the virtual disk based on the subset of the VMDK candidates. The VMFS volume is supported by one or more physical hard disks in a storage system in the virtualized computing system.

Abstract: An example method to allocate a virtual disk for a virtual machine in a virtualized computing system includes allocating a plurality of virtual machine disk file (VMDK) candidates in a virtual machine file system (VMFS) volume, selecting a subset of VMDK candidates from the plurality of VMDK candidates for having performance scores indicative of higher I/O throughputs associated with the one or more physical hard disks than rest of the plurality of VMDK candidates, and configuring the virtual disk based on the subset of the VMDK candidates. The VMFS volume is supported by one or more physical hard disks in a storage system in the virtualized computing system.

Abstract: The present invention relates to a light guide tube, which is formed by weaving a plurality of filaments to provide a single-hole or multi-hole tube. Further, the filaments include filaments that are made of at least one light-transmittable material. With the single-hole or multi-hole tube formed by weaving filaments, besides strengthening the capability of enduring sideways stress, a light-emitting unit can be additionally included at a front end of the tube for illumination purposes and formation can be achieved by using various types of filaments to suit practical needs, such as combination with metal wires or electrical signal carrier material for purposes of transmission of electrical power or electronic information, thereby achieving a wider range of applications that the conventional tubes.

Abstract: A method for allocating storage for a virtual machine includes receiving a request to allocate a block of disk storage on a physical disk to a virtual disk associated with the virtual machine. The method also includes identifying a plurality of available blocks on the physical disk, each of the plurality of available blocks defining a radial distance from a center axis of a platter of the physical disk. The method further includes determining which of the plurality of available blocks has a greatest radial distance from the center axis of the platter and, based on the determining, selecting an allocation block from the plurality of available blocks, the allocation block having the greatest radial distance from the center axis of the platter. The method also includes allocating the allocation block to the virtual machine.

Abstract: The present invention provides a bone connection material that includes an internal layer. The internal layer is formed by braiding a plurality of filaments. The internal layer that is formed by braiding filaments is resistant to lateral shearing forces and may provide flexibility so as to achieve wide applications. Further, the present invention overcomes the drawback of the conventionally used metallic materials that are rigid and inelastic and also overcomes the problem of polylactic acid material of being brittle. Thus, the bone formed according to the present invention is close to a natural bone and is more suitable for uses in portions where frequent movements are made and scaffolds of stem cells.

Abstract: The present invention provides a bone connection material that includes an internal layer. The internal layer is formed by braiding a plurality of filaments. The internal layer that is formed by braiding filaments is resistant to lateral shearing forces and may provide flexibility so as to achieve wide applications. Further, the present invention overcomes the drawback of the conventionally used metallic materials that are rigid and inelastic and also overcomes the problem of polylactic acid material of being brittle. Thus, the bone formed according to the present invention is close to a natural bone and is more suitable for uses in portions where frequent movements are made and scaffolds of stem cells.

Abstract: An optical fiber with image enhancement is provided with, in combination an elongated optical fiber unit including an image input surface on a bottom, an image output surface on a top, and a light guide member between the image input surface and the image output surface. The elongated optical fiber unit is a triangular sectional structure having a vertical surface and an inclined surface, and length of the image output surface is greater than that of the image input surface. The elongated optical fiber unit is configured to seamlessly fasten in a joining portion of two rectangular panels so that light is configured to pass through the image input surface, the light guide member, and the image output surface.