Hitachi, Ltd.

Hitachi Vantara Corporation

Norimitsu Hayakawa

Yukari Hatta

Takao Totsuka

Hiroshi Miki

Toshiomi Moriki

Shuhei Matsumoto

Eiichiro Oiwa

Takuji Teraya

Masatoshi Konagaya

Naoki Inoue

Keisuke Yoshida

Yasuo Hirata

Christopher J Aston

Yoshihito Nakagawa

Ryosuke Matsubara

Takashi Shimojo

Hiroyuki Mitome

Shiro Nohara

Satoshi Kinugawa

Simon Carl Johnson

Graham Ellement

Sathisha Poojary

A storage control system to provide file-level storage and block-level storage services. The storage control system has a computer system including a second I/O unit configured to receive block-level storage related requests, a processor unit, a first memory unit, and a storage unit; and a programmable logic device including a first I/O unit configured to receive file-level storage related requests, an interface unit configured to communicate with the computer system, one or more programmable hardware-implemented processing units and for processing of file-level storage related requests, and a second memory unit. The software components executed on the processor unit include a block-level storage management component and a virtualization management component; and a virtual machine managed by the virtualization management component executes a file-level management component to communicate with the programmable hardware-implemented processing units of the programmable logic device and to manage file-level storage services related to file-level storage related requests.

Storage control system managing file-level and block-level storage services, and methods for controlling such storage control system

A computer on which OSs run is coupled to the storage apparatus, the OSs include a first OS controlling access to the storage apparatus and a second OS generating a virtual computer. A logically divided computer resources are allocated to the first OS and the second OS respectively. A third OS for executing an application runs on the virtual computer. The second OS has a shared region management part managing a shared region that is a memory region used for communication between the application and the first OS. The third operating system has an agent requesting the second operating system to secure the shared region based on a request from the application and mapping the secured shared region to a guest virtual address space.

Computer and memory region management method

A computer, on which a plurality of operating systems run, wherein the plurality of operating systems includes a first operating system and a second operating system configured to generate a plurality of virtual computers. The first operating system runs on a first logical resource, and the second operating system runs on a second logical resource. A third operating system runs on each of the plurality of virtual computers. The third operating system secures a cache memory area in a virtual memory. The second operating system generates location information, which indicates a location of the cache memory area in a physical address space that the second operating system manages. The first operating system obtain data stored in the cache memory area based on the location information.

Nonvolatile storage of host and guest cache data in response to power interruption

A computer system comprising a plurality of computers on which a plurality of operating systems run, wherein a memory stores a first hardware control unit, wherein a storage device stores a first OS image, a second OS image, a second hardware control unit for executing start processing of the second OS, and an address rewrite unit, wherein the second hardware control unit includes a start unit for starting the second hardware control unit, wherein the address rewrite unit which is started by the first OS is configured to: obtain an address of a storage area, in which address data to be rewritten is stored, as a target address, rewrite the address data stored in the storage area corresponding to the obtained target address and start the start unit, wherein the start unit is configured to start the second hardware control unit by using the rewritten address data.

Computer system and startup method

The network connection of a VM (target VM) that has been live-migrated from a first physical computer to a second physical computer is restored in a virtual computer system in which communication is performed using a certain type of information outside the jurisdiction of a virtualization mechanism. When receiving a packet from the VM, the first virtualization mechanism of the first physical computer extracts a certain type of information from the packet and registers the extracted certain type of information in a first management information unit. The first virtualization mechanism transmits the certain type of information in the first management information unit to the second virtualization mechanism of the second physical computer during live migration. The second virtualization mechanism registers the certain type of information in a second management information unit and transmits a certain type of packet including the certain type of information from at least one of one or more physical I/O devices of the second physical computer in order to restore the network connection of the target VM.

Virtual computer system for restoring network connection of live-migrated virtual computer

A hypervisor as a movement source stores key information, and the key information is registered in a storage using the stored key information through a logical HBA which is used for migration.

Computer system to migrate virtual computers or logical paritions

A live migration in a virtual computer system. On a source physical computer, the control information area of the source logical FC-HBA (managed by an OS) is copied to the control information area of a dummy logical FC-HBA managed by a hypervisor. After an FC login to the dummy FC-HBA, an address conversion table is rewritten so that a host physical address for referring to the control information area of a logical HBA' can be referred to using a guest logical address for referring to the control information area of the source FC-HBA. After the FC logout of the source FC-HBA, using a WWN of the FC used for the FC logout, a login to the destination logic FC-HBA is performed. Next, the OS on the source computer is taken over by the destination computer. Therefore, the disk accessed on the source computer can be accessed from the destination FC-HBA.

Virtual computer system and control method of migrating virtual computer

A hypervisor sets all physical areas in an allocation area, which is allocated to a virtual machine from within a physical memory and is configured from a plurality of physical areas, to a write protect mode. In a case where a physical processor identifies that the write-destination area from the virtual machine is in the write protect mode, the hypervisor manages the write-destination area as an updated area, and cancels the write protect mode of the write-destination area. At a certain point in time, the hypervisor copies data inside the updated physical area from within the allocation area to a storage area (a copy area) that differs from the allocation area. In a case where a prescribed failure is detected in the physical area, the hypervisor restores data from the copy area.

Hypervisor and server apparatus capable of restoring data inside a failure area

In scheduling shared processing that has a higher priority than LPAR processing, giving precedence to physical CPUs running idle LPARs prevents prolonged hold-up of LPAR processing. In a system is comprised of multiple physical CPUs, multiple LPARs to which these physical CPUs are allocated and which execute programs under their guest OSes, and a management program managing these LPARs, a few additional units are introduced: a guest OS monitoring unit that can grasp the states of guest OSes running on these LPARs and a dispatcher unit that allocates one of these physical CPUs to shared processing requested by the management program, which has a higher priority than LPAR processing. When a request for shared processing arises, the dispatcher unit interrogates the guest OS monitoring unit and, based on the information obtained from it, gives priority of allocation to the physical CPU processing an idle LPAR.

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Tokyo, Japan

Norimitsu Hayakawa