Fujitsu Corporation

Nippon Hoso' Kyokai

Noboru Iwamatsu

Naoki Nishiguchi

Masatomo Yasaki

Masahide Noda

Toru Kamiwada

Yousuke Nakamura

Yotaro Konishi

Kazutaka Ogihara

Eiji Hasegawa

Fumio Honda

Hironori Sakakihara

Naoya Fujisaki

Arisa Fujii

Kiyohiko Ishikawa

Shunji Sunasaki

Plural virtual machines are executed by plural information processing devices coupled to each other via a network and connected to plural storage devices, where each information processing device executes one or more virtual machines by using a processor thereof. When first virtual machines used for distributed processing are created, a management device monitors a utilization ratio of the processor used for each of the first virtual machines, a first communication volume used for an access of each of the first virtual machines to one of the plural storage devices, and a second communication volume used for arithmetic processing of each of the first virtual machines performed on data stored in the plural storage devices. The management device controls a migration of each of the first virtual machines between the plural information processing devices, based on the utilization ratio of the processor, the first communication volume, and the second communication volume.

System and method for controlling virtual-machine migrations based on processor usage rates and traffic amounts

An information processing apparatus including plural operation processing apparatuses and plural disk apparatuses, which are connected to each other via a switch. A management apparatus provides, in response to a loan request from a terminal, a first operation resource and a first storage resource of a first processing apparatus in which a first operation processing apparatus and a first disk apparatus are connected with each other through the switch, to the terminal through a network. The management apparatus releases the connection between the first operation processing apparatus and the first disk apparatus through the switch in response to a return request from the terminal and provides the first storage resource and a second operation resource of a second processing apparatus in which a second operation processing apparatus and the first disk apparatus are connected with each other through the switch, to the terminal through the network.

Apparatus and method for controlling access to a disk apparatus in an information processing system

A mobile terminal includes a display device and a processor. The processor acquires first display information about a first virtual machine. The first display information does not prompt a user operation. The processor displays the acquired first display information in a first display area on the display device. The processor acquires second display information about the first virtual machine. The second display information prompts a user operation. The processor displays the acquired second display information in a second display area on the display device. The processor determines, in response to an instruction for changing display, whether mixed display is allowed by referencing status information. The processor acquires, when the mixed display is allowed, third display information about a second virtual machine. The third display information does not prompt a user operation. The processor displays the acquired third display information in a third display area on the display device.

Mobile terminal

An information processing system includes a first information processing apparatus coupled to a first magnetic-disk-device groups including first magnetic disk devices whose motors rotate, a second information processing apparatus coupled to a second magnetic-disk-device group including one or more second magnetic disk devices whose motors rotate and a plurality of third magnetic disk devices whose motors are in a stop state. A management apparatus which included in the system is configured to manage the first and second information processing apparatuses, wherein, when data is to be written, the management apparatus outputs a write request to any of the plurality of first magnetic disk devices and any of the one or more second magnetic disk devices, and when data is to be read, the management apparatus outputs a read request to any of the plurality of first magnetic disk devices.

Information processing system and control method for information processing system

A logical information-processing device is allocated based on a request from a terminal device. In an information-processing device, one of plural storage devices is connected to one of plural processing devices each including a managing unit. First correspondence information stores physical identification information identifying the information-processing device in association with address information of the managing unit. Second correspondence information stores the physical identification information in association with logical identification information identifying the logical information-processing device. A managing device obtains address information of the managing unit of the information-processing device corresponding to the logical information-processing device allocated to the terminal device, by using the physical identification information obtained, based on the logical identification information included in the request, from the second correspondence information. A proxy device accesses the managing unit of the corresponding information-processing device based on the address information obtained by the managing device.

System and method for controlling access to a device allocated to a logical information processing device

A computer-readable recording medium storing an authentication program for causing a computer to execute an authentication process, the authentication process includes: extracting a plurality of face information from an image acquired; when the plurality of face information include both first face information registered in authentication information and second face information not registered in the authentication information, registering the second face information in the authentication information; and if new face information extracted from new image is the second face information stored in the authentication information, determining that an authentication for the new face information is successful.

Computer-readable recording medium storing authentication program, authentication device, and authentication method

A virtual machine migration method conducted in a virtual machine migration system that includes a virtual machine of a migration source computer and a migrating target computer. The migration source computer conducts processing to send host physical address information of an MMIO region corresponding to a device used by the virtual machine through directed I/O to a migration target computer, and to cause a connection target of the device to be switched to the migration target computer by a switching device that connects the device to the computers. The migration target computer conducts processing to allocate an MMIO region corresponding to the host physical address information sent by the migration source computer, to the device connected to the computers by the switching device.

Virtual machine migrating system and method

An I/O device performs data input and data output between the I/O device and first and second computers. An I/O switch relays input and output data between the I/O device and each of the first and second computers. A device emulator emulates the I/O device when a virtual machine running on the first computer and directly accessing the I/O device is migrated from the first computer to the second computer. A connection controller controls switching connection between any one of the first and second computers and any one of the I/O device and the device emulator. The first computer is connected to the I/O device and the second computer is connected to the device emulator until the virtual machine running on the first computer is stopped, and the second computer is connected to the I/O device after the virtual machine running on the first computer is stopped.

System for migrating a virtual machine between computers

A memory management apparatus has an ASID conversion table, an actual ASID use table, and a TLB flush control section. The ASID conversion table and the actual ASID use table manage virtual ASID, actual ASID and an overlap flag so that they are related for each VM. The TLB flush control section reads actual ASIDs allocated to VM as a switching target at the time of switching VM as a switching source into the VM as the switching target, determines whether the read actual ASID is allocated to the plurality of VMs in an overlapped manner with reference to the overlap flag, and sets the actual ASID in the read actual ASIDs determined being allocated in the overlapped manner as a target for the TLB flush.

Memory management apparatus, memory management method and non-transitory computer readable storage medium

A computer is provided with a measuring unit that measures elapsed time at a non-access state between one of the guest virtual machines and the devices as a non-access time with respect to each of the guest virtual machines accessing the devices via the device driver virtual machine; a storage unit that stores the operation profile information that matches the non-access time with the operation mode information representing the operation modes of the devices; a decision unit that decides the operation mode with reference to the operation profile information on the basis of the measured access time; and a transition control unit that transits the devices to the operation mode, so that this makes it possible to appropriately carry out power saving management of the devices not depending on a power saving function of the guest OS.

Information processor, control method, and computer-readable recording medium recording control program

A computer-readable recording medium stores therein a scheduling program that causes a computer to execute a process. The process includes executing multiple virtual computing machines that operate an OS; receiving a change in the number of activations of completely activated software from the OS; updating when the change in the number of activations has been received, a first table that stores software completely activated in the OS; selecting from a second table that stores combinations of a completely activated software group, a combination according to a software group stored in the first table; extracting from the second table and according to the selected combination, priorities of software stored for each of the combinations; and updating the priorities of the software stored in the first table to the extracted priorities.

Computer scheduling product and apparatus therefor

A disclosed computer system having a virtual computer management mechanism realizing a virtual computer includes a user virtual computer that communicates with a device via a virtual computer for a device driver under a control of the virtual computer management mechanism, an input receiving unit that receives a signal of an input operation from the device, a reset level determination unit that determines a reset level based on the received signal of the input operation, a reset target specifying unit that specifies a virtual computer to be a target of a reset process based on the determined reset level, and a reset signal transmission unit that transmits a reset signal to perform the reset process on the specified virtual computer.

Computer system and recording medium

A first video-recording reservation management apparatus which communicates with a second apparatus and can receive the same channels. The first apparatus includes a video-recording reservation processing unit which registers video-recording reservation information of the first apparatus in a storage unit and notifies the second apparatus of such registration via a network when a video-recording reservation is made with respect to the video-recording function of the first apparatus, and a substitutional video-recording reservation processing unit which acquires registered video-recording reservation information from the second apparatus and registers the information in the storage unit when such a registration notification is received from the network, and executes a substitutional video-recording reservation by using the video-recording function of the first apparatus when the video-recording reservation of the second apparatus corresponding to the substitutional video-recording reservation information is not executed when video-recording cannot be performed due to power outage or failure.

Video-recording reservation management apparatus, method, program, and system

An apparatus stores first divided trust information which is one portion resulting from division of trust information generated by a transmission target apparatus that is a transmission target for data, receives a transmission request for the data from the target apparatus and receives second divided trust information which is the other portion resulting from division of the trust information of the target apparatus and verification information generated using information indicating a state of the target apparatus that made the request, recovers the trust information using the first divided trust information stored and the received second divided trust information, verifies trustworthiness of the target apparatus using the recovered trust information and the received verification information, transmits the data indicated by the request to the target apparatus when the verification of trustworthiness is successful.

Information processing apparatus and data transmission method of information processing apparatus

A method of causing an information processing apparatus to execute, the method including: performing a management procedure to accept addresses of respective page tables generated for each of operation modes from an operating system that manages the virtual address space and to associate the addresses with the operating system to be recorded in page table correspondence information storage; executing a control procedure to set a second access right indicating a value lower than the first access right in accordance with the operation mode of the operating system; and processing a processing procedure to cause the memory management device to execute a flush of a translation look-aside buffer, and to set the second access right indicating a value for validating the first access right, wherein the memory management device performs a control on the memory access while the second access right is prioritized over the first access right.

Growing community of inventors

Kawasaki, Japan

Noboru Iwamatsu