REQUEST PROCESSING SYSTEM PROVIDED WITH MULTI-CORE PROCESSOR

• US 20120042215A1
• Filed: 09/01/2009
• Published: 02/16/2012
• Est. Priority Date: 09/01/2009
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Shibuya, Hiroji, Terao, Toshiaki, Teranishi, Mika, Murayama, Shunji, Sata, Nakaba
• Granted Patent: US 8,782,469 B2
• Time in Patent Office: Days
• US Class Current: 714/48
• CPC Class Codes: G06F 11/1417 Boot up procedures

Abstract

One processor core of a plurality of processor cores that are included in a multi-core processor that processes a request from an external device detects a prescribed event, specifies a sub resource that is assigned to the one processor core based on the resource management information that indicates a sub resource of a plurality of sub resources that are included in a physical resource and a processor core that is assigned to the sub resource, and executes a reboot based on the specified sub resource.

Claims

1. A request processing system, comprising:

a first interface device (111) that receives a request from an external device;

a physical resource that includes storage resources (121 and 124); and

a multi-core processor (125) that is coupled to the first interface device and the physical resource,

wherein the physical resource includes a plurality of sub resources,

the multi-core processor includes a plurality of processor cores (126),

the plurality of sub resources are assigned to the plurality of processor cores,

the storage resource stores the resource management information that indicates a processor core and a sub resource that is assigned to the processor core, and

in the case in which a prescribed event is generated, one processor core of the plurality of processor cores;

(a) specifies a sub resource that is assigned to the one processor core based on the resource management information; and

(b) executes a reboot based on the specified sub resource.

2. A request processing system according to claim 1, further comprising:

At least one RAID (redundant array of independent (or inexpensive) disk) group composed of a plurality of physical storage devices (115); and

a second interface device (113) that communicates with the plurality of physical storage devices (115),

wherein one RAID group is composed of at least two physical storage devices,

the multi-core processor is coupled to the second interface device,

the storage resource includes a first memory (121) and a second memory (124),

the first memory stores the resource management information, a BIOS (basic input/output system) (201), a boot loader (202), OS (operating system) (205), and an application program (206) that runs on the OS,

the second memory includes a plurality of sub memory areas that are assigned to the plurality of processor cores,

each of the sub memory areas includes an OS area that is a sub memory area for an OS and an AP area that is a sub memory area for an application program,

in the case in which a power supply of the multi-core processor is turned on, each processor core executes;

(H1) loading the BIOS from the first memory;

(H2) by executing the BIOS, loading the boot loader from the first memory and activating the boot loader;

(H3) by executing the boot loader, copying the OS from the first memory to an OS area that is assigned to the processor core and that is indicated by the resource management information and activating the OS;

(H4) by executing the OS, copying the application program from the first memory to an AP area that is assigned to the processor core and that is indicated by the resource management information and activating the application program; and

(H5) executing the application program,

the one processor core executes an I/O (input/output) processing by executing the application program,

the I/O processing includes writing of the write target data associated with the request to at least two physical storage devices that configure a RAID group based on an access destination area that is specified by the request, or reading of the read target data from at least two physical storage devices that configure a RAID group based on a specified access destination area and providing the data to the external device, and

in the case in which the I/O processing is executed when the prescribed event is generated, the one processor core passes the I/O processing to at least one other multi-core processor of the plurality of processor cores, and then executes the reset processing.

3. A request processing system according to claim 2, wherein the one processor core executes any one of the following steps (x) to (z) for the step (b):

(x) initializing a sub memory area that is assigned to the one processor core, loading the boot loader from the first memory, and activating the boot loader, thereby executing the step (H3) and subsequent steps;

(y) activating the OS in the OS area that is assigned to the one processor core, thereby executing the step (H4) and subsequent steps; and

(z) unloading the application in the AP area that is assigned to the one processor core, copies the application program from the first memory to the AP area that is assigned to the one processor core, and activating the application program, thereby executing the step (H5).

4. A request processing system according to claim 3, wherein:

a first fault level is corresponded to the step (x), a second fault level is corresponded to the step (y), and a third fault level is corresponded to the step (z),

the first memory stores the fault level judgment information that indicates a kind of a fault and a fault level of the first to third fault levels to which the fault is corresponded,

the prescribed event is a detection of a fault, and

the one processor core executes a processing corresponding to a fault level that is indicated by the fault level judgment information and that is corresponded to a kind of the detected fault in the steps (x) to (z).

5. A request processing system according to claim 4, wherein:

each of the sub memory areas includes a log area that is a sub memory area for a log,

the one processor core writes a log that indicates the reboot result to a log area that is assigned to the one processor core in the step (b), and

the one processor core does not execute the steps (a) and (b) in the case in which at least one log that has been stored in the log area that is assigned to the one processor core complies with the prescribed conditions even if the prescribed event is generated.

6. The request processing system according to claims 3, wherein:

the prescribed event is an exchange of an OS and/or an application program that has been stored into the first memory, and

the step (x) is executed in the step (b).

7. A request processing system according to claim 1, wherein:

there are a plurality of reboot processing corresponding to a plurality of reboot levels,

each of the reboot processing includes at least one sub processing,

as the reboot level is higher, the number of sub processing included in the reboot processing is larger, and

the one processor core executes the reboot processing that is corresponded to the reboot level corresponding to the generated event in the step (b).

8. A request processing system according to claim 7, wherein:

the prescribed event is a detection of a fault,

any one of the plurality of fault levels is corresponded to a fault of each kind,

the reboot level is the fault level, and

the one processor core executes the reboot processing that is corresponded to the fault level corresponding to a kind of the detected fault in the step (b).

9. The request processing system according to claim 7, wherein:

the storage resource includes a first memory (121) and a second memory (124), the first memory stores a BIOS (basic input/output system) (201), a boot loader (202), OS (operating system) (205), and an application program (206),

the second memory includes a plurality of sub memory areas that are assigned to the plurality of processor cores,

in the case in which a power supply of the multi-core processor is turned on, each processor core executes;

(H1) loading the BIOS from the first memory;

(H2) by executing the BIOS, loading the boot loader from the first memory and activating the boot loader;

(H3) by executing the boot loader, copying the OS from the first memory to a sub memory area that is assigned to the processor core and that is indicated by the resource management information and activating the OS;

(H4) by executing the OS, copying the application program from the first memory to a sub memory area that is assigned to the processor core and that is indicated by the resource management information and activating the application program; and

(H5) executing the application program,

the one processor core executes any one of the following steps (x) to (z) for the step (b);

(x) initializing a sub memory area that is assigned to the one processor core, loading the boot loader from the first memory, and activating the boot loader, thereby executing the step (H3) and subsequent steps;

(y) activating the OS that has been loaded to the OS area that is assigned to the one processor core, thereby executing the step (H4) and subsequent steps; and

(z) unloading the application in the AP area that is assigned to the one processor core, copies the application program from the first memory to the AP area that is assigned to the one processor core, and activating the application program, thereby executing the step (H5),

the plurality of reboot levels include a first reboot level to a third reboot level, and the first reboot level is corresponded to the step (x), the second reboot level is corresponded to the step (y), and the third reboot level is corresponded to the step (z),

10. The request processing system according to claim 1, wherein:

the storage resource includes a first memory (121) and a second memory (124), the first memory stores a BIOS (basic input/output system) (201), a boot loader (202), OS (operating system) (205), and an application program (206),

the second memory includes a plurality of sub memory areas that are assigned to the plurality of processor cores,

in the case in which a power supply of the multi-core processor is turned on, each processor core activates the BIOS, the boot loader, the OS, and the application program in this order,

the prescribed event is an exchange of an OS and/or an application program that has been stored into the first memory, and

the one processor core initializes a sub memory area that is assigned to the one processor core, loads the boot loader from the first memory, and activates the boot loader in the step (b).

11. A request processing system according to claim 10, wherein:

the prescribed event is a detection of a fault, and

in the case in which a fault level that is corresponded to a kind of a fault that has been detected is lower than the prescribed fault level, the one processor core executes a reboot processing having sub processing less than that included in a reboot processing that is executed when an OS and/or an application program that has been stored into the first memory is exchanged in the step (b).

12. The request processing system according to claim 1, wherein:

the storage resource stores a BIOS (basic input/output system) (201), a boot loader (202), OS (operating system) (205), and an application program (206),

in the case in which a power supply of the multi-core processor is turned on, each processor core executes;

(H1) loading the BIOS from the storage resource;

(H2) by executing the BIOS, loading the boot loader from the storage resource and activating the boot loader;

(H3) by executing the boot loader, loading the OS from the storage resource and activating the OS;

(H4) by executing the OS, loading the application program from the storage resource and activating the application program; and

(H5) executing the application program, and

the one processor core executes at least one of loading and activating the boot loader, activating the OS, and loading and activating the application program by executing the prescribed computer program in the step (b), whereby at least one of the steps (H3), (H4), and (H5) is executed in the step (b).

13. The request processing system according to claim 1, wherein:

the one processor core prepares a log that indicates the result of the reboot of the step (b) and stores the log into the storage resource every when the step (b) is executed, and

the one processor core does not execute the steps (a) and (b) in the case in which the log that has been stored in the storage resource complies with the prescribed conditions even if the prescribed event is generated.

14. The request processing system according to claim 1, wherein:

in the case in which the processing of a request from the external device is executed when the prescribed event is generated, the one processor core passes the processing of the request to at least one other multi-core processor of the plurality of processor cores, and then executes the steps (a) and (b).

15. A reboot method in which one processor core of a plurality of processor cores that are included in a multi-core processor that processes a request from an external device detects a prescribed event, comprising the steps of:

(a) specifying a sub resource that is assigned to the one processor core based on the resource management information that indicates a sub resource of a plurality of sub resources that are included in a physical resource and a processor core that is assigned to the sub resource; and

(b) executing a reboot based on the specified sub resource by the one processor core.