System and method for implementing a hypervisor for server emulation

• US 20070214233A1
• Filed: 03/07/2006
• Published: 09/13/2007
• Est. Priority Date: 03/07/2006
• Status: Abandoned Application

• Current Assignee: Lenovo Singapore Pte Limited (Lenovo Group Ltd.)
• Original Assignee: Lenovo Singapore Pte Limited (Lenovo Group Ltd.)
• Inventors: Locker, Howard, Cromer, Daryl, Springfield, Randall, Waltermann, Rod
• Application Number:
  US11/369,930
• Publication Number:
  US 20070214233A1
• Time in Patent Office: Days
• US Class Current: 709/217
• CPC Class Codes: H04L 67/08 specially adapted for terminal emulation, e.g. Telnet
• CPC Class Codes: H04L 67/1001 for accessing one among a plurality of replicated servers
• CPC Class Codes: H04L 67/1008 based on parameters of servers, e.g. available memory or workload monitoring of computer activity G06F11/30
• CPC Class Codes: H04L 67/1031 Controlling of the operation of servers by a load balancer, e.g. adding or removing servers that serve requests
• CPC Class Codes: H04L 67/1034 Reaction to server failures by a load balancer
• CPC Class Codes: H04L 67/568 Storing data temporarily at an intermediate stage, e.g. caching
• CPC Class Codes: H04L 69/40 for recovering from a failure of a protocol instance or entity, e.g. service redundancy protocols, protocol state redundancy or protocol service redirection management of faults, events, alarms or notifications in data switching networks H04L41/06

Abstract

A method, system, and computer-usable medium for implementing a cluster network including a collection of clients that further include a client operating system and a server operating system, wherein the server operating system caches data retrieved from the cluster network from prior successful access to the cluster network, removing at least one client among the collection of clients from the cluster network, and in response to detecting the removal of at least one client from the cluster network, intercepting and re-routing at least one request targeted to the cluster network to the server operating system, wherein the server operating system emulates the cluster network by providing at least one response to the at least one request from the at least one client to the cluster network utilizing the cached data.

Claims

1. A method comprising:

implementing a cluster network including a plurality of clients that further include a client operating system and a server operating system, wherein said server operating system caches data retrieved from said cluster network from prior successful accesses to said cluster network;

removing at least one client among said plurality of clients from said cluster network; and

in response to detecting said removing, intercepting and re-routing at least one request targeted to said cluster network to said server operating system stored in said at least one removed client, wherein said server operating system emulates said cluster network by providing at least one response to said at least one request from said at least one client to said cluster network utilizing said cached data.

2. The method according to claim 1, further comprising:

in response to determining said at least one request cannot be completed, indicating that a resource utilized to complete said at least one request is not available.

3. The method according to claim 1, further comprising:

in response to detecting said removing, re-assigning to said plurality of clients functions previously performed by said at least one client removed from said cluster network.

4. The method according to claim 1, further comprising:

re-establishing connection between said at least one client and said cluster network;

announcing presence and credentials of said at least one client to said cluster network; and

re-distributing tasks among said cluster network to accommodate presence of said at least one client.

5. A system comprising:

a processing unit;

a data bus coupled to said processing unit;

a memory coupled to said data bus; and

a computer-readable medium embodying computer program code, said computer program code comprising instructions executable by said processor and configured for;

implementing a cluster network including a plurality of clients that further include a client operating system and a server operating system, wherein said server operating system caches data retrieved from said cluster network from prior successful accesses to said cluster network;

removing at least one client among said plurality of clients from said cluster network; and

in response to detecting said removing, intercepting and re-routing at least one request targeted to said cluster network to said server operating system stored in said at least one removed client, wherein said server operating system emulates said cluster network by providing at least one response to said at least one request from said at least one client to said cluster network utilizing said cached data.

6. The system according to claim 5, wherein said instructions are further configured for:

in response to determining said at least one request cannot be completed, indicating that a resource utilized to complete said at least one request is not available.

7. The system according to claim 5, wherein said instructions are further configured for:

in response to detecting said removing, re-assigning to said plurality of clients functions previously performed by said at least one client removed from said cluster network.

8. The system according to claim 5, wherein said instructions are further configured for:

re-establishing connection between said at least one client and said cluster network;

announcing presence and credentials of said at least one client to said cluster network; and

re-distributing tasks among said cluster network to accommodate presence of said at least one client.

9. A computer-usable medium embodying computer program code, said computer program code comprising computer-executable instructions configured for:

implementing a cluster network including a plurality of clients that further include a client operating system and a server operating system, wherein said server operating system caches data retrieved from said cluster network from prior successful accesses to said cluster network; and

removing at least one client among said plurality of clients from said cluster network;

in response to detecting said removing, intercepting and re-routing at least one request targeted to said cluster network to said server operating system stored in said at least one removed client, wherein said server operating system emulates said cluster network by providing at least one response to said at least one request from said at least one client to said cluster network utilizing said cached data.

10. The computer-usable medium according to claim 9, wherein said embodied computer program code further comprises computer-executable instructions configured for:

in response to determining said at least one request cannot be completed, indicating that a resource utilized to complete said at least one request is not available.

11. The computer-usable medium according to claim 9, wherein said embodied computer program code further comprises computer-executable instructions configured for:

in response to detecting said removing, re-assigning to said plurality of clients functions previously performed by said at least one client removed from said cluster network.

12. The computer-usable medium according to claim 9, wherein said embodied computer program code further comprises computer-executable instructions configured for:

re-establishing connection between said at least one client and said cluster network;

announcing presence and credentials of said at least one client to said cluster network; and

re-distributing tasks among said cluster network to accommodate presence of said at least one client.