WO2001063408A2 - Verfahren zur sicherstellung der kompatibilität und verfahren zur datensicherung innerhalb eines verteilten rechnersystems - Google Patents
Verfahren zur sicherstellung der kompatibilität und verfahren zur datensicherung innerhalb eines verteilten rechnersystems Download PDFInfo
- Publication number
- WO2001063408A2 WO2001063408A2 PCT/DE2001/000546 DE0100546W WO0163408A2 WO 2001063408 A2 WO2001063408 A2 WO 2001063408A2 DE 0100546 W DE0100546 W DE 0100546W WO 0163408 A2 WO0163408 A2 WO 0163408A2
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- WIPO (PCT)
- Prior art keywords
- computer system
- data
- sub
- activated
- software
- Prior art date
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Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F15/00—Digital computers in general; Data processing equipment in general
- G06F15/16—Combinations of two or more digital computers each having at least an arithmetic unit, a program unit and a register, e.g. for a simultaneous processing of several programs
- G06F15/177—Initialisation or configuration control
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F9/00—Arrangements for program control, e.g. control units
- G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
- G06F9/44—Arrangements for executing specific programs
- G06F9/4401—Bootstrapping
- G06F9/4405—Initialisation of multiprocessor systems
Definitions
- the invention relates to a method for ensuring compatibility between software units activated in sub-computer systems belonging to a distributed computer system, each of which has a version status of software code and / or
- Data include, as well as a method for data backup within a distributed computer system having several sub-computer systems.
- Distributed computer systems preferably play a special role in today's telecommunications systems, which are generally multiprocessor systems.
- a distributed computer system is characterized in particular by the fact that processes can each be assigned to different processors, the processors possibly being located on spatially separate platforms in the distributed computer system.
- FIG. 2 essentially shows the EWSD architecture, which on page 14 of a customer brochure from Siemens AG “More Power for Higher Performance EWSD PowerNode *, published in 1999, with the order number A50001-N2-P86-2-7600, Information and Communication Networks, Hofmannstr. 51, D-81359 Kunststoff.
- a further computer system (not explicitly shown in FIG. 2) is integrated in the system components SSNC, which takes over some tasks of the main computer system.
- Operating software and application software for executing the tasks assigned to the computer systems are activated both on the main computer system CP and on the computer system of the SSNC, hereinafter referred to as the SSNC computer system.
- the software units activated on the main computer system which generally comprise several software modules, are loosely coupled to the software units activated on the SSNC computer system, i.e. :
- the software units of both computer systems do not access any shared memory, but required common data to run application software.
- the software units activated on the sub-computer systems each of which comprises a version of the software code and data, must also be compatible with one another.
- the object of the invention is to develop a method for ensuring data consistency and compatibility between software units activated on partial computer systems, which meets the requirements placed on a distributed computer system.
- An essential aspect of the invention is that the following steps are carried out during system initialization of at least one such sub-computer system in order to ensure the compatibility between the software units activated in m sub-computer systems belonging to a distributed computer system:
- the method according to the invention fulfills the requirement placed on a distributed computer system with regard to ensuring compatibility.
- this procedure has the advantage that if a partial computer system reverts to a software unit with an older update version, ie that an "older * software unit must be activated or loaded, the other partial computer system also automatically to a compatible one Software unit falls behind.
- the method according to the invention is preferably used in a switching system having at least two computer systems.
- the system initialization mentioned can be carried out especially when the system is restarted or when the system is restarted.
- version numbers of the software units present on a partial computer system are entered in a list in accordance with a further embodiment of the invention.
- the version number of a software unit activated on the partial computer system is stored at the top of the list.
- Such a list is preferably administered on each sub-computer system.
- the individual lists are therefore searched for compatible software units. This means that the corresponding compatible software units are activated on the respective sub-computer systems.
- each list element has one or more attributes.
- the version number of a software unit is determined by setting a version attribute. tes in the list.
- the list elements in a list are conveniently organized in such a way that the version numbers of the software units stored in the list from the second position onwards are sorted in ascending order according to their update age. In this way, the runtime of the search for compatible software units is optimized.
- a further advantageous embodiment of the invention provides that when a non-activated software unit compatible with a first partial computer system has been found in a second partial computer system or vice versa, the software unit that has the latest version of is always selected to activate the compatible non-activated software unit the compatible non-activated software units of the second sub-computer system. This ensures that the system retains as many features as possible in the applications that are normally not made available by software units with an older update version.
- Another essential aspect of the invention is that a data backup is initiated within a distributed computer system after a software change and is synchronized in the respective sub-computer systems of the distributed computer system, the following steps being carried out depending on the current status of the data backup process: a) Data is backed up in each sub-computer system, which other sub-computer systems cannot access. b) Data access blocking is activated in each sub-computer system, c) In each sub-computer system, data is backed up to which other sub-computer systems can also access. d) The previously activated data access blocks are deactivated again.
- Another advantage of this method according to the invention can also be seen in the fact that it creates, among other things, an ideal prerequisite for guaranteed data consistency for the method according to the invention described above for ensuring compatibility.
- the synchronization of the data backup preferably takes place in the following manner: the sub-computer systems agree on the synchronization parts mentioned that the data backup initiated in each sub-computer system has reached a status defined for the continuation of the data backup.
- Such a data backup method is used in a switching system having at least two computer systems.
- a variant for defining the synchronization points in the Data backup process consists of determining time intervals, for example by means of a timekeeper, at which the sub-computer systems must agree.
- the synchronization points are implemented in the form of points defined in the software code.
- a further development of the invention provides that after the data backup the version of the saved data is stored in the respective sub-computer system. This makes it easier to check the data consistency for later computing operations using the data. Ideally, this creates a possibility of using the stored version for compatibility testing in accordance with the above-described method according to the invention for ensuring compatibility.
- the version status of the backed up data is stored by setting a version attribute stored in the respective sub-computer system.
- a further embodiment of the invention proves to be particularly advantageous in that the data backups running on the respective sub-computer systems are controlled from a central point by means of control software. It is thus possible to initiate the data backup process from an operating system connected to the distributed computer system and to monitor and control it during its course.
- FIG. 1 shows the exemplary architecture of a classic switching system mentioned at the beginning
- FIG. 2 shows an exemplary architecture mentioned at the outset of a further development of the classic switching system
- FIG. 3 shows an exemplary sequence of the data backup method according to the invention
- 4a and 4b show an example of a flow chart for comparing the compatibility in the method according to the invention.
- Figure 3 shows a system A sub-computer system, e.g. the main computer system and a further sub-computer system B, e.g. the SSNC computer system.
- a sub-computer system e.g. the main computer system
- a further sub-computer system B e.g. the SSNC computer system.
- further process steps are marked with numbers surrounded by circles.
- the previously mentioned synchronization points specified in the data backup process are shown in the figure with SYNC
- step 1 a data backup is initiated on the subsystem system A and the subsystem system B using a so-called network manager software NM installed on an operating system connected to the overall system.
- step 2 each sub-computer system has reached a synchronization point in the data backup run
- step 3 the sub-computer systems System A and System B agree that both have reached the synchronization point SYNC 1.
- step 4 data access blocks are initiated on both sub-computer systems. From this point on, no changes can be made to the data to be backed up in the following.
- Step 5 both sub-computer systems have reached the synchronization point SYNC 2, in step 6 common data are saved on each sub-computer system.
- Requests to change the common data to be backed up are rejected.
- Information about rejected changes can be temporarily stored in a log file.
- step 8 the data access blocks on each sub-system are removed again. After the data access block has been removed, changes can be made to the data again. In particular, previously rejected requests for changes are made to the data based on the information recorded in the log file.
- the mentioned synchronization points SYNC 1 to SYNC 3 can be implemented in different variants.
- a timekeeper can determine a point in time at which a message about the status of the data backup process that has been reached is reported to the other sub-computer system.
- the synchronization points can be implemented in the software code, for example in such a way that a message is sent to the other sub-computer system at certain points in the software code.
- EWSD_JOB_REG.DECISION ROGC_EWSD_FALLB_REQ
- EWSD_JOB_REG.EWSD_FB_TO_NEXT_GEN FALSE
- EWSD JOB REG.COLDST SYNC FALSE
- a version attribute GCS (Generation Compatibility Sign) is used to identify the version status of a software unit, on the basis of which the compatibility check e.g. according to the figures 4a and 4b explained below.
- FIGS. 4a and 4b show the compatibility test that takes place in the method according to the invention between the
- Subcomputer systems System A and System B existing software units and the response to the compatibility check shown.
- the numbers marked with circles mark entry points to the compatibility check, which result from searching the lists mentioned for compatible software units. This method is used in particular during system initialization e.g. carried out after a software update or change.
- the version number of the version attribute GCS_A of the software unit with the number 1 activated on the partial computer system A matches the version number, e.g. 6831 of the version attribute GCS_B of the software unit activated on the partial computer system B with the number 1. In this case, it is permitted that a connection is established between the subsystem system A and the subsystem system B during the system initialization of the overall system.
- the version attributes GCS_A and GCS_B do not match, the lists mentioned are further examined for compatible software units, with entry point 2 or entry point being used to check the compatibility 3 comes into question.
- the version attributes GCS_A of the software unit with the number 1 activated on the sub-computer system A and the version attribute GCS_B of a software unit with the number 2 not activated on the sub-system B are compared.
- the software unit with the latest update version is preferably used by the conceivable, compatible, non-activated software units.
- a return to the software unit with the number 2 is initiated in the partial computer system System B.
- a relapse means: The currently activated software unit on the partial computer system System B is deactivated and instead the previously not activated software unit with the number 2 is activated on this system. If the version attributes GCS_A and GCS_B do not match, further searching of the lists mentioned leads to entry point 4.
- the compatibility check runs analogously to entry point 2.
- the comparison of the version attributes GCS_A and GCS_B if they match, results in a relapse to the "older * not activated software unit with the number 2 in the sub-computer system Systems A. If the version attributes do not match, it is possible to get to entry point 4.
- two version attributes GCS_A and GCS_B of two software units that are not activated on the respective sub-computer system System A or System B are compared with one another. If the two version attributes match, the non-activated software units are activated on the sub-computer system System A and on the sub-computer system B and the previously activated software units are deactivated. In the event of a mismatch between the two Version attributes result in an error message and no connection is established between the two sub-computer systems System A and System B during system initialization.
- the exemplary embodiment of the method according to the invention can of course be applied analogously to distributed computer systems with several sub-computer systems. For this purpose, there is a list on each sub-computer system that contains all software units of a sub-computer system. In this way, all existing lists are searched for compatible software units with the help of the version attribute. All version attachments are compared with each other. Corresponding reactions on the sub-computer systems are drawn according to the comparison result.
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- Engineering & Computer Science (AREA)
- Software Systems (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Security & Cryptography (AREA)
- Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01913625A EP1261917A2 (de) | 2000-02-23 | 2001-02-13 | Verfahren zur sicherstellung der kompatibilität und verfahren zur datensicherung innerhalb eines mehrere teilrechnersysteme aufweisenden verteilten rechnersystems |
CA002400810A CA2400810A1 (en) | 2000-02-23 | 2001-02-13 | Method for ensuring compatibility, and a method for data protection, within a distributed computer system having a number of computer subsystems |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10008245.9 | 2000-02-23 | ||
DE10008245A DE10008245A1 (de) | 2000-02-23 | 2000-02-23 | Verfahren zur Sicherstellung der Kompatibilität und Verfahren zur Datensicherung innerhalb eines mehrere Teilrechnersysteme aufweisenden verteilten Rechnersystems |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001063408A2 true WO2001063408A2 (de) | 2001-08-30 |
WO2001063408A3 WO2001063408A3 (de) | 2002-02-14 |
Family
ID=7631966
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2001/000546 WO2001063408A2 (de) | 2000-02-23 | 2001-02-13 | Verfahren zur sicherstellung der kompatibilität und verfahren zur datensicherung innerhalb eines verteilten rechnersystems |
Country Status (6)
Country | Link |
---|---|
US (1) | US20030163804A1 (de) |
EP (1) | EP1261917A2 (de) |
CN (1) | CN1426554A (de) |
CA (1) | CA2400810A1 (de) |
DE (1) | DE10008245A1 (de) |
WO (1) | WO2001063408A2 (de) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100718532B1 (ko) * | 2005-08-13 | 2007-05-16 | 테크노세미켐 주식회사 | 반도체 제조용 감광성수지 제거제 조성물 |
US9471756B2 (en) * | 2006-06-27 | 2016-10-18 | Intuit Inc. | Method and apparatus for authorizing a software product to be used on a computer system |
JP2008243007A (ja) * | 2007-03-28 | 2008-10-09 | Fujitsu Ltd | 情報処理装置、情報処理方法および情報処理プログラム |
US9342298B2 (en) * | 2013-03-14 | 2016-05-17 | Microsoft Technology Licensing, Llc | Application compatibility checking in a distributed computing environment |
CN106201850B (zh) * | 2015-04-29 | 2019-07-05 | 阿里巴巴集团控股有限公司 | 一种兼容性测试方法及装置 |
CN107977223B (zh) * | 2017-11-20 | 2020-12-04 | 杭州迪普科技股份有限公司 | 一种配置兼容性检查方法及装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0498130A2 (de) * | 1991-02-08 | 1992-08-12 | International Business Machines Corporation | Anordnung und Verfahren zur Kompatibilitätsprüfung von Systemkomponenten |
WO1994025918A1 (en) * | 1993-05-05 | 1994-11-10 | Apple Computer, Inc. | Method and apparatus for verifying compatibility between modular components in a computer system |
US5555418A (en) * | 1992-07-01 | 1996-09-10 | Nilsson; Rickard | System for changing software during computer operation |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2251502B (en) * | 1990-11-07 | 1995-06-14 | Nonstop Networks Limited | Data-loss prevention products |
BR9402027A (pt) * | 1993-05-28 | 1994-12-13 | Xerox Corp | Processo para gerenciar uma configuração e assegurar compatibilidade entre componentes num sistema de computação, e, processo para eliminar incompatibilidades entre software residente e software de migração num sistema de computador automatizado |
US5761659A (en) * | 1996-02-29 | 1998-06-02 | Sun Microsystems, Inc. | Method, product, and structure for flexible range locking of read and write requests using shared and exclusive locks, flags, sub-locks, and counters |
US6175855B1 (en) * | 1996-12-20 | 2001-01-16 | Siemens Aktiengesellschaft | Method for instantiating a class having different versions |
US5970488A (en) * | 1997-05-05 | 1999-10-19 | Northrop Grumman Corporation | Real-time distributed database system and method |
US6195796B1 (en) * | 1998-10-21 | 2001-02-27 | Wildseed, Ltd. | User centric source control |
US6532588B1 (en) * | 1998-10-21 | 2003-03-11 | Xoucin, Inc. | User centric program product distribution |
US6601234B1 (en) * | 1999-08-31 | 2003-07-29 | Accenture Llp | Attribute dictionary in a business logic services environment |
-
2000
- 2000-02-23 DE DE10008245A patent/DE10008245A1/de not_active Withdrawn
-
2001
- 2001-02-13 US US10/204,510 patent/US20030163804A1/en not_active Abandoned
- 2001-02-13 WO PCT/DE2001/000546 patent/WO2001063408A2/de not_active Application Discontinuation
- 2001-02-13 EP EP01913625A patent/EP1261917A2/de not_active Withdrawn
- 2001-02-13 CN CN01808466A patent/CN1426554A/zh active Pending
- 2001-02-13 CA CA002400810A patent/CA2400810A1/en not_active Abandoned
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0498130A2 (de) * | 1991-02-08 | 1992-08-12 | International Business Machines Corporation | Anordnung und Verfahren zur Kompatibilitätsprüfung von Systemkomponenten |
US5555418A (en) * | 1992-07-01 | 1996-09-10 | Nilsson; Rickard | System for changing software during computer operation |
WO1994025918A1 (en) * | 1993-05-05 | 1994-11-10 | Apple Computer, Inc. | Method and apparatus for verifying compatibility between modular components in a computer system |
Also Published As
Publication number | Publication date |
---|---|
CN1426554A (zh) | 2003-06-25 |
DE10008245A1 (de) | 2001-09-06 |
EP1261917A2 (de) | 2002-12-04 |
WO2001063408A3 (de) | 2002-02-14 |
US20030163804A1 (en) | 2003-08-28 |
CA2400810A1 (en) | 2001-08-30 |
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