INFORMATION PROCESSING SYSTEM, INFORMATION PROCESSING APPARATUS, AND INFORMATION PROCESSING APPARATUS CONTROL METHOD

• US 20160371151A1
• Filed: 04/20/2016
• Published: 12/22/2016
• Est. Priority Date: 06/18/2015
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: Masuda, Kouji, Yoshida, Akimasa, Kobashi, Kazunori
• Granted Patent: US 10,445,189 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: G06F 11/00 Error detection; Error correction; Monitoring error detection, correction or monitoring in information storage based on relative movement between record carrier and transducer G11B20/18; monitoring, i.e. supervising the progress of recording or reproducing G11B27/36; in static stores G11C29/00
• CPC Class Codes: G06F 11/1451 by selection of backup contents
• CPC Class Codes: G06F 11/1464 for networked environments
• CPC Class Codes: G06F 11/2094 Redundant storage or storage space G06F11/2056 takes precedence
• CPC Class Codes: G06F 11/2097 maintaining the standby controller/processing unit updated initialisation or re-synchronisation thereof G06F11/1658 and subgroups
• CPC Class Codes: G06F 16/119 Details of migration of file systems migration mechanisms in storage systems G06F3/0647
• CPC Class Codes: G06F 16/214 Database migration support
• CPC Class Codes: G06F 16/2365 Ensuring data consistency and integrity
• CPC Class Codes: G06F 16/27 Replication, distribution or synchronisation of data between databases or within a distributed database system; Distributed database system architectures therefor
• CPC Class Codes: G06F 16/955 using information identifiers, e.g. uniform resource locators [URL]
• CPC Class Codes: G06F 2201/80 Database-specific techniques
• CPC Class Codes: G06F 2201/835 Timestamp
• CPC Class Codes: G06F 3/061 Improving I/O performance
• CPC Class Codes: G06F 3/0619 in relation to data integrity, e.g. data losses, bit errors
• CPC Class Codes: G06F 3/0647 Migration mechanisms
• CPC Class Codes: G06F 3/065 Replication mechanisms
• CPC Class Codes: G06F 3/067 Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
• CPC Class Codes: G06F 3/0689 Disk arrays, e.g. RAID, JBOD

Abstract

A metadata processing unit acquires the first metadata from a first data storing unit at a first frequency and makes a second data storing unit store the first metadata. A file data processing unit specifies, based on the update history of the first metadata, second metadata that is updated on and after the last acquisition date and time of second file data stored in the second data storing unit, acquires the first file data associated with the specified management data at a second frequency that is lower than the first frequency, and makes the second data storing unit store the first file data. A switching unit switches a read/write process that is performed by using the operation data stored in the first data storing unit such that the read/write process is performed by using the second metadata and the second file data in the second data storing unit.

Claims

1. An information processing system comprising:

a first information processing apparatus;

a second information processing apparatus; and

an operation management device, wherein

the first information processing apparatus includes

a first storing unit that stores therein operation data in which management data that includes therein update date and time and actual data that is associated with the management data are held,

the second information processing apparatus includes

a second storing unit, and

a first management data acquiring unit that acquires the management data from the first storing unit at a first frequency and that makes the second storing unit store the acquired management data, and

a first actual data acquiring unit that specifies, on the basis of an update history of the management data acquired by the first management data acquiring unit, the management data that is updated on and after the last acquisition date and time of the actual data stored in the second storing unit, that acquires the actual data associated with the specified management data from the first storing unit at a second frequency that is lower than the first frequency, and that makes the second storing unit store the acquired actual data, and

the operation management device includes

a switching unit that switches a read and write process that is performed by using the operation data stored in the first storing unit such that the read and write process is performed by using the management data and the actual data that are stored in the second storing unit.

2. The information processing system according to claim 1, wherein

the first information processing apparatus further includes an operation data update history saving unit that saves therein an update history of the management data that is stored in the first storing unit, and

the first actual data acquiring unit specifies, at the time of switching performed by the switching unit, on the basis of the update history saved in the operation data update history saving unit and the update history of the management data acquired by the first management data acquiring unit, the management data that has not been updated and acquires the specified management data.

3. The information processing system according to claim 1, further comprising a third information processing apparatus that includes

a third storing unit,

a second management data acquiring unit that acquires the management data from the second storing unit at a third frequency and that makes the third storing unit store the acquired management data, and

a second actual data acquiring unit that specifies, on the basis of an update history of the management data acquired by the second management data acquiring unit, the management data that is updated on and after the last acquisition date and time of the actual data stored in the third storing unit, that acquires the actual data associated with the specified management data from the second storing unit at a fourth frequency that is lower than the third frequency, and that makes the third storing unit store the acquired actual data.

4. The information processing system according to claim 1, wherein

a plurality number of the second information processing apparatuses is present,

the operation management device includes a priority storing unit that stores therein the priority of each of the second information processing apparatuses, and

an information unit that, on the basis of the priority, the first frequency and the second frequency that are used by each of the first management data acquiring units are notified to the first management data acquiring unit in each of the second information processing apparatuses.

5. An information processing apparatus comprising:

a first management data acquiring unit that acquires, from a first storing unit that stores therein operation data in which management data that includes therein update date and time and actual data that is associated with the management data are held, the management data at a first frequency and that makes a second storing unit store the acquired management data; and

a first actual data acquiring unit that specifies, on the basis of an update history of the management data acquired by the first management data acquiring unit, the management data that is updated on and after the last acquisition date and time of the actual data stored in the second storing unit, that acquires the actual data associated with the specified management data from the first storing unit at a second frequency that is lower than the first frequency, and that makes the second storing unit store the acquired actual data.

6. The information processing apparatus according to claim 5, wherein a read and write process that is performed by using the operation data stored in the first storing unit is performed by using the management data and the actual data that are stored in the second storing unit.

7. The information processing apparatus according to claim 5, wherein the first storing unit is provided in another information processing apparatus that acquires, at a third frequency, operation data stored in a third storing unit that is different from the first storing unit and the second storing unit, that makes the first storing unit store the acquired operation data, that specifies, on the basis of an update history of the management data in the first storing unit, the management data that is updated on and after the last acquisition date and time of the actual data stored in the first storing unit, that acquires the actual data associated with the specified management data from the third storing unit at a fourth frequency that is lower than the third frequency, and that makes the first storing unit store the acquired actual data.

8. An information processing apparatus control method comprising:

acquiring, from a first storing unit that stores therein operation data in which management data that includes therein update date and time and actual data that is associated with the management data are held, the management data at a first frequency;

storing, performed by a second storing unit, the acquired management data;

saving an update history of the management data that is stored in the second storing unit;

holding the last update date and time on which the actual data acquired from the first storing unit is made to be stored by the second storing unit;

specifying, on the basis of the update history, the management data that is updated on and after the last acquisition date and time at a second frequency that is lower than the first frequency;

acquiring the actual data associated with the specified management data; and

storing, performed by the second storing unit, the acquired actual data.