KR100310477B1 - How to back up production packages at the exchange - Google Patents

Abstract

The present invention relates to a method of backing up an operation package at an exchange, and more particularly, in case of backing up a PLD (Processor Load Data) package to a magnetic tape (MT) in the field in preparation for a failure during operation of the exchange system. After the processing is completed, backups are made to prevent duplicate relation inconsistency, so that in case of a failure during system operation, a switch that enables standby loading by using a package backed up to the MT can be used to backup the operation package. It is about.

Conventionally, when a backup MT is used to change a software due to a catastrophic software failure of an exchange system operating in the field, there is a problem in that the standby MT cannot be used because the redundant MT is not processed in the backup MT.

In the present invention, when the PLD package is backed up to the MT in the field in preparation for a failure during operation of the system, the backup is made after the completion of the processing for the duplicate relations to prevent the occurrence of inconsistency of the duplicate relations, Standby loading can be used with backed up packages, allowing for version changes with minimal downtime.

Description

How to back up production packages at the exchange

The present invention relates to a method of backing up an operation package at an exchange, and more particularly, in case of backing up a PLD (Processor Load Data) package to a magnetic tape (MT) in the field in preparation for a failure during operation of the exchange system. After the processing is completed, backups are made to prevent duplicate relation inconsistency, so that in case of a failure during system operation, a switch that enables standby loading by using a package backed up to the MT can be used to backup the operation package. It is about.

In general, the processors of the exchanges in operation are operated in redundancy for stability, and at least the interruption of service incurred when replacing the versions operating in the exchange by using the redundant hardware characteristics when replacing the system version or expanding the system. To do this, a version change is performed using standby loading.

In other words, when the OS (Operation System) and the user program are required to be changed in a redundant system, a new program is loaded using the standby processor while the active processor is executing the user program. When it's done, it puts the standby processor into an active state.

As such, the corresponding standby loading is a method used for version replacement and system expansion while minimizing service interruption. In this case, the package used should be a newly manufactured package that does not need to deal with duplicate relations. This is because the newly manufactured package matches duplicate relations at the time of manufacture.

Here, the redundant relation refers to a relation that is stored in the same structure and the same contents in several processors among the relations used by the software of the exchange. Since the redundant relation is owned in the corresponding processors, a change occurs in the redundant relation in any one processor. In order to ensure data consistency, the same changes must be made for duplicate relations of all processors that own the relation.

And, the parts that need to change the redundant relation can be divided into memory and disk, and when the need to change the redundant relation, all the memory is changed, but in the case of disk, to prevent the system overload due to disk operation, Applies only to processor load data (PLD) of the processor. Here, the PLD is a collection of data in which data necessary for each processor is constructed.

Thus, in the case of the disk, the PLD of all processors is not changed, but only the PLD of a specific processor. Therefore, when the processor is restarted, the PLD is loaded without reflecting the final change history. Therefore, during PLD loading, it is necessary to process the duplicate relation for matching the duplicate relation.

However, in the case of a new package, since all duplicated relations are matched at the time of package manufacture, a separate redundant relation processing is not necessary. Therefore, as described above, standby loading does not perform redundant relation processing, unlike normal loading.

However, at the site where the system is operated, the backup magnetic tape (MT) is produced and stored periodically in case of inevitable version change due to a serious failure while the system is in operation. There is no processing for duplicate relations.

So, if a serious failure occurs while the system is running, and you want to replace the version using standby loading with the backup package backed up to the MT instead of the currently running package, the standby loading is handled for duplicate relations unlike normal loading. Because it does not, the changes of the duplicate relations for the backup package cannot be reflected. Therefore, the backup package cannot replace the version using standby loading.

As shown in FIG. 1, the conventional operation package backup apparatus includes an operation & maintenance processor (OMP) 10 that manages the operation and maintenance related functions of the system, and an MMP that enables communication between the operator and the system. A Man Machine Processor 20, a MTU (Magnetic Tape Unit) 30 capable of storing and transporting data in a large capacity, input / output programs and data, and a disk 40 for recording and reading general data.

The MMP 20 includes a command processing block 21 for analyzing and processing a command input from an operator terminal, and the OMP 10 has a disk 40 when a backup-related command is applied from the command processing block 21. Is provided with a backup unit 11, a redundant collation processing unit 12, and a memory unit 13 for reading data from the data and writing the data to the MTU 30.

As described above, referring to the conventional PLD backup operation, when a backup command is received through the operator terminal, the command processing block 21 in the MMP 20 analyzes the backup command applied from the operator terminal to the OMP 10. The backup unit 11 is notified of the backup performance. Then, the backup unit 11 in the OMP 10 reads the PLD of the processor from the disk 40 according to the backup command applied from the instruction processing block 21 in the MMP 20, and writes it to the MTU 30. Write the content.

Accordingly, the backup unit 11 outputs the received backup end message to the operator terminal through the command processing block 21.

As described above, when a backup MT is used when a software is changed due to a catastrophic software failure of an exchange system operating in the field, there is a problem in that the standby MT cannot be used because the redundant MT is not processed in the backup MT. have.

The present invention has been made in view of the above-described problems, and in case of back-up of a system during operation of a system, a duplicate relation is completed when a PLD (Processor Load Data) package is backed up on a magnetic tape (MT) in the field. It is intended to provide a backup method of production packages that allows backups to be made after backup to prevent inconsistency of duplicate relations, and to allow version replacement while using the standby loading function with the packages backed up to the MT to minimize downtime of the system. have.

Features of the present invention to achieve the above object, MTU for storing and loading data and programs using a portable storage means; A disk for recording and reading general data; An OMP including a backup unit, a redundant relation processing unit, and a memory unit to manage the operation and maintenance related functions of the system; An operational package backup method applied to an exchanger including an OMP for enabling communication between an operator and a system having a command processing block, wherein the backup command is received when an operator backup command is input through an operator terminal in the command processing block in the MMP. Analyzing and applying it to the backup unit of the OMP; Determining whether the PLD backup request signal is received by the backup unit in the OMP, and applying a recovery request signal for a redundant relation of the PLD to the redundant relation processing unit in the OMP when the backup command is received. Reading the duplicate relation information from the duplicate relation information area of the memory unit in the OMP by copying the duplicate relation information to the PLD of the disk and notifying the backup unit of the completion of the duplicate relation processing after the restoration of the duplicate relations is completed; The backup unit is notified of the completion of the redundant relation process, sends the information of the disk to the MTU, backs it up to the portable storage means, and sends the information notifying that the PLD has been backed up to the MTU to the command processing block of the MMP. and; The command processing block includes outputting a backup end message received from the backup unit to an operator terminal.

On the other hand, if the backup unit in the OMP, as a result of the determination, the PLD backup request signal, the information of the disk is sent to the MTU, characterized in that to back up to the portable storage means.

1 is a block diagram showing an operation package backup device in a conventional exchange.

2 is a block diagram illustrating an apparatus for backing up an operation package in an exchange according to an embodiment of the present invention.

3 is a flowchart illustrating an operation package backup process according to an embodiment of the present invention.

* Explanation of symbols for main parts of the drawings

10: OMP 11: Backup unit

12: duplicate relation processing unit 13: memory unit

20: MMP 21: instruction processing block

30: MTU 40: Disc

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 2, an operating package backup apparatus according to an exemplary embodiment of the present invention includes an MTU 30 used as needed for storing billing and statistical data and for loading a program, and a disk for recording and reading general data. 40), an OMP (10) which oversees the operation and maintenance of the system, and an MMP (20) which enables communication between the operator and the system.

The MMP 20 includes a command processing block 21 for receiving a command from an operator terminal and processing the command.

The OMP 10 checks whether the memory unit 13 stores information on the redundant relation and whether the PLD backup request signal is received when the backup related command is applied from the command processing block 21 to restore the redundant relation. A backup unit 11 for performing backup processing after the duplicate relation is processed, and a redundant relation is read from the memory unit 13 according to a recovery request signal for the duplicate relation from the backup unit 11 The redundant relation processing part 12 used for 40 is provided.

The MT backup operation of the operation package backup apparatus according to the present invention configured as described above will be described in detail with reference to the accompanying drawings.

In case of serious failure during the operation of the system, the MT is backed up in the field and the backup MT is created and stored. In the event of a failure of an active exchange system, standby loading can be performed using the corresponding backup MT to reduce the operating time to a minimum and to perform a version change.

Then, looking at how to backup the PLD to the MT, in the command processing block 21 in the MMP (20) receives an operator backup command through the operator terminal when the backup command is analyzed by the backup unit of the OMP ( 11), the operation of backing up is notified (step S1, step S2).

Accordingly, the backup unit 11 in the corresponding OMP 10 checks whether the PLD backup request signal is received when the backup command is applied from the instruction processing block 21 in the MMP 20, and if the corresponding PLD backup request signal is received, the redundant relation of the PLD is checked. Is applied to the redundant relation processing unit 12 (step S3, step S4).

Accordingly, the redundant relation processing unit 12 reads the redundant relation information from the redundant relation information area in the memory unit 13 in accordance with the recovery request signal for the redundant relation from the backup unit 11 (step S5).

Thereafter, the redundant relation processing unit 12 copies the redundant relation information of the memory unit 13 to the corresponding PLD (Processor Load Data) of the disk 40 by referring to the redundant relation information applied from the memory unit 13. After the recovery of the duplicate relations is finished, the backup unit 11 notifies that the processing for the duplicate relations is finished (step S6).

Accordingly, the backup unit 11 sends the information of the disk 40 to the MTU 30 to perform an operation of backing up to the MT (step S7). The PLD of the processor is read from the disk 40 and the MTU 30 is read. The information is written to the MT to back up to the MT, and information indicating that the PLD has been backed up to the MTU 30 is sent to the instruction processing block 21 of the MMP 20 (step S8).

The command processing block 21 then outputs the backup end message received from the backup unit 11 to the operator terminal (step S9).

In addition, in the case where the backup request signal other than the PLD backup request signal in step S3 is performed, the operation of step S7 is immediately performed to send the information of the disk 40 to the MTU 30 to back up to the MT. .

As described above, in the present invention, when a PLD (Processor Load Data) package is backed up on a magnetic tape (MT) in the field in preparation for a failure during the operation of the exchange system, the backup is completed after the processing for the redundant relation is performed. Prevents inconsistencies With the packages backed up on the MT, you can use the standby loading feature to make version changes with minimal system downtime.

As described above, in the present invention, when a PLD package is backed up on a magnetic tape (MT) in the field in preparation for a failure during the operation of the system, the backup is made after the completion of the processing for the duplicate relation, thereby inconsistency of the duplicate relation. This function prevents the occurrence of the error, so that the standby loading function can be used with the package backed up to the MT so that the version can be changed while minimizing the system downtime.

Claims (2)

An MTU 30 for storing and loading data and programs using portable storage means; A disk 40 for recording and reading general data; An OMP 10 having a backup unit 11, a redundant recovery processing unit 12, and a memory unit 13, which oversees operation and maintenance related functions of the system; In the operational package backup method applied to an exchange having a command processing block 21 to enable communication between the operator and the system MMP (20), Analyzing and applying a backup command to the backup unit 11 of the OMP 10 when an operator backup command is inputted through an operator terminal in the command processing block 21 in the MMP 20; When the backup unit 11 in the OMP 10 receives the backup command, it is determined whether the PLD backup request signal is received. If the PLD backup request signal is received, the recovery request signal for the duplicate relation of the PLD is duplicated in the OMP 10. Applying to the processing unit 12; The redundant relation processing unit 12 reads the redundant relation information from the redundant relation information area of the memory unit 13 in the OMP 10, copies the duplicate relation information to the PLD of the disk 40, and restores the redundant relations. (11) notifying the end of the duplicate relation processing; The backup unit 11 is notified of the completion of the redundant relation process, sends the information of the disk 40 to the MTU 30, backs it up to the portable storage means, and notifies that all PLDs have been backed up to the MTU 30. Sending information to the instruction processing block 21 of the MMP 20; And outputting, by the command processing block (21), a backup end message received from the backup unit (11) to an operator terminal. The method of claim 1, If the backup unit 11 in the OMP 10 determines that the PLD backup request signal is not a result, the backup unit 11 sends the information of the disk 40 to the MTU 30 and backs it up to the portable storage unit. Package backup method.