Integrating external services with a clustered file system

• US 10,592,373 B2
• Filed: 02/06/2018
• Issued: 03/17/2020
• Est. Priority Date: 06/10/2015
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Brown, William B., Gupte, Poornima, Marschollek, Frank, Russell, Lance W., Wolafka, Rainer, Zeng, Rong
• Primary Examiner(s): Tran, Jimmy H
• Application Number:
  US15/890,228
• Publication Number:
  US 20180157570A1
• Time in Patent Office: 770 Days
• CPC Class Codes: G06F 11/1415 at system level
• CPC Class Codes: G06F 11/1482 by means of middleware or OS functionality
• CPC Class Codes: G06F 11/202 where processing functionality is redundant redundant communication control functionality G06F11/2005, redundant storage control functionality G06F11/2089
• CPC Class Codes: G06F 11/2046 where the redundant components share persistent storage G06F11/2043 takes precedence
• CPC Class Codes: G06F 11/3006 where the computing system is distributed, e.g. networked systems, clusters, multiprocessor systems multiprogramming arrangements G06F9/46; allocation of resources G06F9/50
• CPC Class Codes: G06F 16/183 Provision of network file services by network file servers, e.g. by using NFS, CIFS network file access protocols H04L67/1097
• CPC Class Codes: G06F 3/067 Distributed or networked storage systems, e.g. storage area networks [SAN], network attached storage [NAS]
• CPC Class Codes: H04L 67/1097 for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]

Abstract

A computer-implemented method according to one embodiment includes receiving, via an interface of a clustered file system, callback registration information from an external service, identifying a plurality of parameters associated with the callback registration information, constructing a service registration within the clustered file system, based on the plurality of parameters, identifying the service registration in response to an occurrence of one or more events, and performing one or more callbacks, according to the service registration.

Claims

1. A computer-implemented method, comprising:

receiving, via an interface of a clustered file system, registration information from an external service;

identifying a plurality of parameters associated with the registration information, the plurality of parameters including an identification of a transition phase that includes an event associated with the clustered file system;

constructing a service registration within the clustered file system, based on the plurality of parameters;

identifying an occurrence of the transition phase within the clustered file system, utilizing the service registration; and

performing a callback to a plurality of external services in response to the occurrence of the transition phase, according to the service registration, the callback including a communication from the clustered file system to the plurality of external services that indicates a state of the clustered file system.

2. The computer-implemented method of claim 1, wherein the plurality of parameters further include a service specific function to be executed.

3. The computer-implemented method of claim 1, wherein the plurality of parameters further include:

a specification of a function to be executed within the clustered file system at the transition phase,

an indication identifying one or more nodes of the clustered file system on which the function is to be executed,

an indication of an order in which the callback is provided to the external service with respect to other external services, and

an attribute that disallows the clustered file system from executing a function based on a status of the callback.

4. The computer-implemented method of claim 1, wherein the plurality of parameters further include a synchronous or asynchronous attribute, and an order in which a service specific function and a plurality of additional functions are to be executed.

5. The computer-implemented method of claim 1, wherein the plurality of parameters further include one or more error handling attributes.

6. The computer-implemented method of claim 1, wherein the external service includes a process that is not part of the clustered file system that allows devices that are not members of the clustered file system to view and manipulate data within the clustered file system.

7. The computer-implemented method of claim 1, wherein the external service includes an OpenStack service or a Server Message Block (SMB) service.

8. The computer-implemented method of claim 1, wherein a plurality of callbacks are performed in an order determined using order functions specified by the external service and additional external services during a registration.

9. The computer-implemented method of claim 1, wherein the transition phase includes a failure of a node within the clustered file system.

10. The computer-implemented method of claim 1, wherein the event includes a recovery of a failed node within the clustered file system.

15. The computer-implemented method of claim 1, further comprising:

evaluating a plurality of service registrations to determine whether there is a registration for the transition phase; and

identifying the constructed service registration, in response to the evaluating.

16. The computer-implemented method of claim 1, wherein the service registration indicates the plurality of external services to which the callback is to be performed in response to the phase occurring.

11. A computer program product for extending clustered file system functionality, the computer program product comprising a computer readable storage medium having program instructions embodied therewith, wherein the computer readable storage medium is not a transitory signal per se, the program instructions executable by a processor to cause the processor to perform a method comprising:

receiving, utilizing the processor via an interface of a clustered file system, registration information from an external service;

identifying, utilizing the processor, a plurality of parameters associated with the registration information, the plurality of parameters including an identification of a transition phase that includes an event associated with the clustered file system;

constructing, utilizing the processor, a service registration within the clustered file system, based on the plurality of parameters;

identifying, utilizing the processor, an occurrence of the transition phase within the clustered file system, utilizing the service registration; and

performing, utilizing the processor, a callback to a plurality of external services in response to the occurrence of the transition phase, according to the service registration, the callback including a communication from the clustered file system to the plurality of external services that indicates a state of the clustered file system.

12. The computer program product of claim 11, wherein the plurality of parameters further include a service specific function to be executed.

13. The computer program product of claim 11, wherein the plurality of parameters further include an order in which a service specific function and a plurality of additional functions are to be executed.

14. The computer program product of claim 11, wherein the plurality of parameters further include a synchronous or asynchronous attribute.

17. A system, comprising:

a processor; and

logic integrated with the processor, executable by the processor, or integrated with and executable by the processor, the logic being configured to;

receive, via an interface of a clustered file system, registration information from an external service;

identify a plurality of parameters associated with the registration information, the plurality of parameters including an identification of a transition phase that includes an event associated with the clustered file system;

construct a service registration within the clustered file system, based on the plurality of parameters;

identify an occurrence of the transition phase within the clustered file system, utilizing the service registration; and

perform a callback to a plurality of external services in response to the occurrence of the transition phase, according to the service registration, the callback including a communication from the clustered file system to the plurality of external services that indicates a state of the clustered file system.