Apparatus for synchronizing operator initiated commands with a f

Details Apparatus for synchronizing operator initiated commands with a f Apparatus for synchronizing operator initiated commands with a f

1997-03-27

2000-01-04

Le, Dieu-Minh T.

Error detection/correction and fault detection/recovery

Data processing system error or fault handling

Reliability and availability

714 12, 709248, 709400, 710 61, G06F 1100, G06F 1122

Patent

active

060121505

ABSTRACT:
An apparatus for synchronizing operator commands with a failover process in a distributed system having a control workstation and a plurality of nodes. One of the nodes of the distributed system is designated a primary node and one of the nodes is designated a backup node. The backup node includes a backup daemon for performing a failover process if the primary node fails such that the backup node becomes the primary node. Shell scripts send a command string to be synchronized with the operation of the backup daemon from the control workstation to the backup node. The backup daemon is then checked to determine if the backup daemon is sleeping, and, in the event the backup daemon is sleeping, commands derived from the command string are enqueued in a work queue for processing by the backup daemon. The backup daemon is then awakened such that the derived commands in the work queue are processed. In the event that the backup daemon is busy, commands derived from the command string are failed, thereby synchronizing the derived commands with the processing of the backup daemon.

REFERENCES:
patent: 4590554 (1986-05-01), Glazer et al.
patent: 5136498 (1992-08-01), McLaughlin et al.
patent: 5247655 (1993-09-01), Khan et al.
patent: 5404544 (1995-04-01), Crayford
patent: 5408645 (1995-04-01), Ikeda et al.
patent: 5408649 (1995-04-01), Berhears et al.
patent: 5426774 (1995-06-01), Banerjee et al.
patent: 5463763 (1995-10-01), Kubo
patent: 5473599 (1995-12-01), Li et al.
patent: 5485465 (1996-01-01), Liu et al.
patent: 5544077 (1996-08-01), Hershey
patent: 5751955 (1998-05-01), Sonnier et al.
patent: 5764903 (1998-06-01), Yu
patent: 5875290 (1999-02-01), Bartjai et al.
Groetsch, W. & Brand, T., Unix fault tolerance with the queue and count design; Conference pp. 233-243; Sep. 1989.
"Supervisor Recovery in Ring Networks", A. Goyal and R. Nelson, IBM Technical Disclosure Bulletin, vol. 27, No. 8, Jan. 1865, pp. 4715-4717.

Affiliated with

Also associated with

Rating

Apparatus for synchronizing operator initiated commands with a f does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for synchronizing operator initiated commands with a f, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for synchronizing operator initiated commands with a f will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1081188