CONTROL APPARATUS, STORAGE APPARATUS, AND NON-TRANSITORY COMPUTER-READABLE RECORDING MEDIUM HAVING STORED THEREIN CONTROL PROGRAM

• US 20180041381A1
• Filed: 07/25/2017
• Published: 02/08/2018
• Est. Priority Date: 08/05/2016
• Status: Active Grant

• Current Assignee: Fujitsu Limited
• Original Assignee: Fujitsu Limited
• Inventors: MACHIDA, TATSUHIKO, Oshima, Shoji, MATSUBAYASHI, HIROKAZU
• Granted Patent: US 10,454,757 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 41/0659 by isolating or reconfiguring faulty entities
• CPC Class Codes: H04L 41/0663 Performing the actions predefined by failover planning, e.g. switching to standby network elements
• CPC Class Codes: H04L 41/0695 the faulty arrangement being the maintenance, administration or management system
• CPC Class Codes: H04L 45/22 Alternate routing

Abstract

A control apparatus receives information on an abnormality in a relay apparatus including first and second monitor units provided in the relay apparatus to relay a communication among control apparatuses, from the first monitor unit to manage first information and execute a monitor of the relay apparatus, the abnormality being detected by the first monitor unit; and when the received information is information on an abnormality of a bridge unit to form a first communication route between the first monitor unit and the second monitor unit to manage second information and execute a monitor of the relay apparatus, executes a process for switching a communication route used to synchronize the first and second information between the first and second monitor unit, from the first communication route via the bridge unit, to a second communication route via communication lines connecting the control apparatus and the first and second monitor units.

Claims

1. A control apparatus for one of a plurality of control apparatuses configured to control accesses to a plurality of storage devices, the control apparatus comprising:

a memory; and

a processor coupled to the memory, and the processor being configured to;

receive information on an abnormality in a relay apparatus comprising first and second monitor units provided in the relay apparatus configured to relay a communication among the plurality of control apparatuses, from the first monitor unit configured to manage first management information and execute a monitor of the relay apparatus, the abnormality being detected by the first monitor unit; and

when the received information about the abnormality is information on an abnormality of a bridge unit configured to form a first communication route between the first monitor unit and the second monitor unit configured to manage second management information and execute a monitor of the relay apparatus, execute a switching process for switching a communication route used to synchronize the first and second management information between the first monitor unit and the second monitor unit, from the first communication route via the bridge unit, to a second communication route via communication lines connecting the control apparatus and either of the first and second monitor units.

2. The control apparatus according to claim 1, wherein the processor is configured to:

after the switching process, obtain the first and second management information from the first and second monitor units using the second communication route, respectively; and

execute the monitor based on the obtained first and second management information.

3. The control apparatus according to claim 1, wherein the processor is configured to:

when no abnormality arises in the bridge unit, receive information on an abnormality detected by the second monitor unit via the first communication route and the first monitor unit, and after the switching process, receive the information on the abnormality detected by the second monitor unit from the second monitor unit via the second communication route.

4. The control apparatus according to claim 1, wherein the processor is configured to:

when no abnormality arises in the bridge unit, transmit a control instruction to the second monitor unit via the first monitor unit and the first communication route, and after the switching process, transmit the control instruction to the second monitor unit to the second monitor unit via the second communication route.

5. The control apparatus according to claim 1, wherein the processor is configured to:

when information on a recovery of the bridge unit is received from the first monitor unit, switch the communication route from the second communication route to the first communication route.

6. The control apparatus according to claim 1, wherein the processor is configured to:

when the received information about the abnormality is information on an abnormality of the bridge unit and the second monitor unit, execute a stop process for stopping a storage apparatus comprising the plurality of control apparatuses and the relay apparatus.

7. The control apparatus according to claim 1, wherein the processor is configured to:

when the received information about the abnormality is information on an abnormality in at least one module of a first module group comprising a plurality of modules including the first monitor unit and a first connection unit configured to communicatively connect among the plurality of control apparatuses, and a second module group comprising a plurality of modules including the second monitor unit and a second connection unit configured to communicatively connect among the plurality of control apparatuses, execute a detachment process for detaching a site of the abnormality from the relay apparatus.

8. A storage apparatus comprising:

a plurality of control apparatuses configured to control accesses to a plurality of storage devices; and

a relay apparatus configured to relay a communication among the plurality of control apparatuses,

wherein the relay apparatus comprises;

a first monitor unit configured to manage first management information and execute a monitor of the relay apparatus;

a second monitor unit configured to manage second management information and execute a monitor of the relay apparatus; and

a bridge unit configured to form a first communication route between the first monitor unit and the second monitor unit, and

one control apparatus of the plurality of control apparatuses executes a switching process for switching, when receiving information on an abnormality of the bridge unit detected by the first monitor unit from the first monitor unit, a communication route used to synchronize the first and second management information between the first monitor unit and the second monitor unit, from the first communication route via the bridge unit, to a second communication route via communication lines connecting the control apparatus and either of the first and second monitor units.

9. The storage apparatus according to claim 8, wherein the control apparatus is configured to:

after the switching process, obtain the first and second management information from the first and second monitor units using the second communication route, respectively; and

execute the monitor based on the obtained first and second management information.

10. The storage apparatus according to claim 8, wherein the control apparatus is configured to:

when no abnormality arises in the bridge unit, execute at least one of a reception of information on an abnormality detected by the second monitor unit and a transmission of a control instruction to the second monitor unit, via the first monitor unit and the first communication route, and

after the switching process, execute at least one of a reception of the information on the abnormality detected by the second monitor unit and a transmission of the control instruction to the second monitor unit, via the second communication route.

11. The storage apparatus according to claim 8, wherein the control apparatus is configured to:

when information on a recovery of the bridge unit is received from the first monitor unit, switch the communication route from the second communication route to the first communication route.

12. The storage apparatus according to claim 8, wherein the control apparatus is configured to:

when the received information about the abnormality is information on an abnormality of the bridge unit and the second monitor unit, execute a stop process for stopping the storage apparatus.

13. The storage apparatus according to claim 8, wherein the relay apparatus comprises:

a first module group comprising a plurality of modules including the first monitor unit and a first connection unit configured to communicatively connect among the plurality of control apparatuses,

a second module group comprising a plurality of modules including the second monitor unit and a second connection unit configured to communicatively connect among the plurality of control apparatuses, the control apparatus is configured to;

when the received information about the abnormality is information on an abnormality in at least one module, execute a detachment process for detaching a site of the abnormality from the relay apparatus.

14. A non-transitory computer-readable recording medium having stored therein a control program for causing one of computers configured to control accesses to a plurality of storage devices, to execute the process comprising:

receiving information on an abnormality in a relay apparatus comprising first and second monitor units provided in a relay apparatus configured to relay a communication among the plurality of computers, from the first monitor unit configured to manage first management information and execute a monitor of the relay apparatus, the abnormality being detected by the first monitor unit; and

when the received information about the abnormality is information on an abnormality of a bridge unit configured to form a first communication route between the first monitor unit and the second monitor unit configured to manage second management information and execute a monitor of the relay apparatus, executing a switching process for switching a communication route used to synchronize the first and second management information between the first monitor unit and the second monitor unit, from the first communication route via the bridge unit, to a second communication route via communication lines connecting the computer and either of the first and second monitor units.

15. The non-transitory computer-readable recording medium according claim 14, wherein the control program causes the one of the computers to execute the process comprising:

after the switching process, obtaining the first and second management information from the first and second monitor units using the second communication route, respectively; and

executing the monitor based on the obtained first and second management information.

16. The non-transitory computer-readable recording medium according claim 14, wherein the control program causes the one of the computers to execute the process comprising:

when no abnormality arises in the bridge unit, executing at least one of a reception of information on an abnormality detected by the second monitor unit and a transmission of a control instruction to the second monitor unit, via the first monitor unit and the first communication route, and

after the switching process, executing at least one of a reception of the information on the abnormality detected by the second monitor unit and a transmission of the control instruction to the second monitor unit, via the second communication route.

17. The non-transitory computer-readable recording medium according claim 14, wherein the control program causes the one of the computers to execute the process comprising:

when information on a recovery of the bridge unit is received from the first monitor unit, switching the communication route from the second communication route to the first communication route.

18. The non-transitory computer-readable recording medium according claim 14, wherein the control program causes the one of the computers to execute the process comprising:

when the received information about the abnormality is information on an abnormality of the bridge unit and the second monitor unit, executing a stop process for stopping a storage apparatus comprising the plurality of computer and the relay apparatus.

19. The non-transitory computer-readable recording medium according claim 14, wherein the control program causes the one of the computers to execute the process comprising:

when the received information about the abnormality is information on an abnormality in at least one module of a first module group comprising a plurality of modules including the first monitor unit and a first connection unit configured to communicatively connect among the plurality of computers, and a second module group comprising a plurality of modules including the second monitor unit and a second connection unit configured to communicatively connect among the plurality of computers, executing a detachment process for detaching a site of the abnormality from the relay apparatus.