Claims
- 1. A method for determining a relaxed quorum number for a quorum based operation of a distributed computing system, said method comprising:determining a number of active processors in a group of processors; and if said number of active processors comprises an even number, determining a majority number of said active processors of said group of processors and subtracting one from the majority number to arrive at a relaxed quorum number for use by a quorum based operation, wherein the quorum based operation comprises a system configuration change to the group of processors.
- 2. The method of claim 1, wherein said distributed computing system comprises a shared nothing distributed computing system, and wherein said quorum based operation comprises a recovery processing operation for retrieving a current state of said quorum group of processors.
- 3. A system for determining a relaxed quorum number for a quorum based operation of a distributed computing system, said system comprising:means for determining a number of active processors in a group of processors; and means for determining a majority number of said active processors of said group of processors, and if said number of active processors comprises an even number, for subtracting one from the majority number to arrive at a relaxed quorum number for use by a quorum based operation, wherein the quorum based operation comprises a system configuration change to the group of processors.
- 4. The system of claim 3, wherein said distributed computing system comprises a shared nothing distributed computing system, and wherein said quorum based operation comprises a recovery processing operation for retrieving a current state of said quorum group of processors.
- 5. A distributed computing system comprising:a group of processors adapted to allow: determining of a number of active processors in a group of processors; and determining of a majority number of said active processors of said group of processors, and if said number of active processors comprises an even number, subtracting one from the majority number to arrive at a relaxed quorum number for use by a quorum based operation, wherein the quorum based operation comprises a system configuration change to said group of processors.
- 6. At least one program storage device readable by a machine, tangibly embodying at least one program of instructions executable by the machine to perform a method for determining a relaxed quorum number for a quorum based operation of a distributed computing system, comprising:determining a number of active processors in a group of processors; and if said number of active processors comprises an even number, determining a majority number of said active processors of said group of processors and subtracting one from the majority number to arrive at a relaxed quorum number for use by a quorum based operation, wherein the quorum based operation comprises a system configuration change to the group of processors.
CROSS-REFERENCE TO RELATED APPLICATION
This application contains subject matter which is related to the subject matter of the following applications, which are assigned to the same assignee as this application and filed on the same day as this application. The below-listed applications are hereby incorporated herein by reference in their entirety:
“DYNAMIC RECONFIGURATION OF A QUORUM GROUP OF PROCESSORS IN A DISTRIBUTED COMPUTING SYSTEM” by Briskey et al., Ser. No. 09/387,666;
“RECOVERY PROCEDURE FOR A DYNAMICALLY RECONFIGURED QUORUM GROUP OF PROCESSORS IN A DISTRIBUTED COMPUTING SYSTEM” by Briskey et al., Ser. No. 09/387,185;
“RELAXED QUORUM DETERMINATION FOR A QUORUM BASED OPERATION” by Briskey et al., Ser. No. 09/386,188.
US Referenced Citations (15)