Concurrent configuration of drives of a data storage library

• US 20030070053A1
• Filed: 10/05/2001
• Published: 04/10/2003
• Est. Priority Date: 10/05/2001
• Status: Active Grant

• Current Assignee: International Business Machines Corporation
• Original Assignee: International Business Machines Corporation
• Inventors: Winston, Roberta Lee, Goodman, Brian Gerard, Hill, Ronald Faye Jr., Gallo, Frank David
• Granted Patent: US 6,813,698 B2
• Time in Patent Office: Days
• US Class Current: 711/170
• CPC Class Codes: G06F 2003/0697 device management, e.g. handlers, drivers, I/O schedulers
• CPC Class Codes: G06F 3/0601 Interfaces specially adapted for storage systems
• CPC Class Codes: G06F 3/0617 in relation to availability
• CPC Class Codes: G06F 3/0634 by changing the state or mode of one or more devices
• CPC Class Codes: G06F 3/0686 Libraries, e.g. tape libraries, jukebox

Abstract

Drives of a data storage library are concurrently configured. A processor transmits library configuration data separately to each drive, initializes a first configuration process state, with a time-out period, for each drive. A drive responds with a status response, the first process state is updated to “completed”. A request for drive unique information is transmitted to the responding drive, advancing the process to a second state, with a time-out period. A drive responds with the information, and the second process state is updated to “completed”, and the received information is stored.

Claims

1. A data storage library, comprising:

a plurality of data storage drives; and

at least one processor for configuring said data storage drives, said at least one processor;

transmits library configuration data separately to each said data storage drive to be configured, each said data storage drive for acknowledging receipt thereof with a status response;

upon said transmission of said library configuration data to a data storage drive,

initiates a configuration first process state for said data storage drive; and

starts a first time-out period for receipt of said status response from said data storage drive;

responds to receipt of said status response from a data storage drive to be configured within said first time-out period,

updates said configuration first process state for said status responding data storage drive;

transmits a request for drive unique information to said status responding data storage drive;

advances said configuration process to a second state for said status responding data storage drive; and

starts a second time-out period for receipt of said drive unique information for said status responding data storage drive;

responds to receipt of said drive unique information from a status responding data storage drive within said second time-out period,

updates said configuration second process state for said information responding data storage drive; and

stores said received drive unique information received from said information responding data storage drive.

2. The data storage library of claim 1, wherein said at least one processor, additionally:

responds to expiration of said first time-out period without receipt of said status response for a data storage drive to be configured, signaling an error; and

responds to expiration of said second time-out period without receipt of said drive unique information for a status responding data storage drive, signaling an error.

3. The data storage library of claim 1, wherein:

said library configuration data comprises at least a communication identifier for said data storage drive; and

said drive unique information comprises at least a drive identifier of said data storage drive.

4. A data storage library, comprising:

a plurality of data storage drives; and

at least one processor for configuring said data storage drives, said at least one processor comprising a task monitor, said at least one processor;

transmits library configuration data separately to each said data storage drive to be configured, each said data storage drive for acknowledging receipt thereof with a status response;

upon said transmitting of said library configuration data to a data storage drive,

assigns, in said task monitor, a configuration first process state for said data storage drive to a process list of said task monitor; and

said task monitor starts a first time-out period for completion of receipt of said status response from said data storage drive of said process list;

said task monitor responds to receipt of said status response from a data storage drive to be configured within said first time-out period,

updating said configuration first process state for said status responding data storage drive to “

completed”

, removing said configuration first process state for said status responding data storage drive from said process list;

responds to said “

completed”

state, transmitting a request for drive unique information to said status responding data storage drive;

upon said transmitting of said request for drive unique information to said status responding data storage drive,

assigns, in said task monitor, a configuration second process state for said status responding data storage drive to said process list; and

said task monitor starts a second time-out period for receipt of said drive unique information for said status responding data storage drive of said process list;

said task monitor responds to receipt of said drive unique information from a status responding data storage drive within said second time-out period,

updating said configuration second process state for said information responding data storage drive to “

completed”

, removing said configuration second process state for said information responding data storage drive from said process list; and

responds to said “

completed”

state, storing said received drive unique information received from said information responding data storage drive.

5. The data storage library of claim 4, wherein:

said configuration first process state comprises a process identifier; and

said configuration second process state comprises said process identifier.

6. The data storage library of claim 4, wherein said at least one processor, additionally:

said task monitor responds to expiration of said first time-out period without receipt of said status response for a data storage drive to be configured, signaling an error, and removing said process from said process list; and

responds to expiration of said second time-out period without receipt of said drive unique information for a status responding data storage drive, signaling an error, and removing said process from said process list.

7. The data storage library of claim 5, wherein:

said configuration first process state additionally comprises a separate index identifier for each said data storage drive assigned said configuration first process state in said process list of said task monitor; and

said configuration second process state additionally comprises a separate index identifier for each said status responding data storage drive assigned said configuration second process state in said process list of said task monitor.

8. In a data storage library having at least one processor and a plurality of data storage drives, a method for configuring said data storage drives, comprising the steps of:

transmitting, from said at least one processor, library configuration data separately to each said data storage drive to be configured, each said data storage drive for acknowledging receipt thereof with a status response;

upon said transmitting of said library configuration data to a data storage drive,

initiating a configuration first process state for said data storage drive; and

starting a first time-out period for receipt of said status response from said data storage drive;

responding to receipt of said status response from a data storage drive to be configured within said first time-out period,

updating said configuration first process state for said status responding data storage drive;

transmitting a request for drive unique information to said status responding data storage drive;

advancing said configuration process to a second state for said status responding data storage drive; and

starting a second time-out period for receipt of said drive unique information for said status responding data storage drive;

responding to receipt of said drive unique information from a status responding data storage drive within said second time-out period,

updating said configuration second process state for said information responding data storage drive; and

storing said received drive unique information received from said information responding data storage drive.

9. The method of claim 8, additionally comprising the steps of:

responding to expiration of said first time-out period without receipt of said status response for a data storage drive to be configured, signaling an error; and

responding to expiration of said second time-out period without receipt of said drive unique information for a status responding data storage drive, signaling an error.

10. The method of claim 8, wherein:

said library configuration data comprises at least a communication identifier for said data storage drive; and

said drive unique information comprises at least a drive identifier of said data storage drive.

11. In a data storage library having at least one processor and a plurality of data storage drives, a method for configuring said data storage drives, comprising the steps of:

transmitting, from said at least one processor, library configuration data separately to each said data storage drive to be configured, each said data storage drive for acknowledging receipt thereof with a status response;

upon said transmitting of said library configuration data to a data storage drive,

assigning, in a task monitor, a configuration first process state for said data storage drive to a process list of said task monitor; and

said task monitor starting a first time-out period for completion of receipt of said status response from said data storage drive of said process list;

said task monitor responding to receipt of said status response from a data storage drive to be configured within said first time-out period,

updating said configuration first process state for said status responding data storage drive to “

completed”

, removing said configuration first process state for said status responding data storage drive from said process list;

responding to said “

completed”

state, transmitting a request for drive unique information to said status responding data storage drive;

upon said transmitting of said request for drive unique information to said status responding data storage drive,

assigning, in said task monitor, a configuration second process state for said status responding data storage drive to said process list; and

said task monitor starting a second time-out period for receipt of said drive unique information for said status responding data storage drive of said process list;

said task monitor responding to receipt of said drive unique information from a status responding data storage drive within said second time-out period,

updating said configuration second process state for said information responding data storage drive to “

completed”

, removing said configuration second process state for said information responding data storage drive from said process list; and

responding to said “

completed”

state, storing said received drive unique information received from said information responding data storage drive.

12. The method of claim 11, wherein:

said configuration first process state comprises a process identifier; and

said configuration second process state comprises said process identifier.

13. The method of claim 11, additionally comprising the steps of:

said task monitor, responding to expiration of said first time-out period without receipt of said status response for a data storage drive to be configured, signaling an error, and removing said process from said process list; and

responding to expiration of said second time-out period without receipt of said drive unique information for a status responding data storage drive, signaling an error, and removing said process from said process list.

14. The method of claim 12, wherein:

said configuration first process state additionally comprises a separate index identifier for each said data storage drive assigned said configuration first process state in said process list of said task monitor; and

said configuration second process state additionally comprises a separate index identifier for each said status responding data storage drive assigned said configuration second process state in said process list of said task monitor.

15. A computer program product of a computer readable medium usable with a programmable computer, said computer program product having computer readable program code embodied therein for configuring a plurality of data storage drives of a data storage library, comprising:

computer readable program code which causes a computer processor of said data storage library to transmit library configuration data separately to each said data storage drive to be configured, each said data storage drive for acknowledging receipt thereof with a status response;

computer readable program code which causes a computer processor of said data storage library to, upon transmitting said library configuration data to a data storage drive,

initiate a configuration first process state for said data storage drive; and

start a first time-out period for receipt of said status response from said data storage drive;

computer readable program code which causes a computer processor of said data storage library to respond to receipt of said status response from a data storage drive to be configured within said first time-out period,

by updating said configuration first process state for said status responding data storage drive;

by transmitting a request for drive unique information to said status responding data storage drive;

by advancing said configuration process to a second state for said status responding data storage drive; and

by starting a second time-out period for receipt of said drive unique information for said status responding data storage drive;

computer readable program code which causes a computer processor of said data storage library to respond to receipt of said drive unique information from a status responding data storage drive within said second time-out period,

by updating said configuration second process state for said information responding data storage drive; and

computer readable program code which causes a computer processor of said data storage library to store said received drive unique information received from said information responding data storage drive.

16. The computer program product of claim 15, additionally comprising computer readable program code which causes a computer processor of said data storage library to:

respond to expiration of said first time-out period without receipt of said status response for a data storage drive to be configured, by signaling an error; and

respond to expiration of said second time-out period without receipt of said drive unique information for a status responding data storage drive, by signaling an error.

17. The computer program product of claim 15, wherein:

said library configuration data comprises at least a communication identifier for said data storage drive; and

said drive unique information comprises at least a drive identifier of said data storage drive.

18. A computer program product of a computer readable medium usable with a programmable computer, said computer program product having computer readable program code embodied therein for configuring a plurality of data storage drives of a data storage library, comprising:

computer readable program code which causes a computer processor of said data storage library to transmit library configuration data separately to each said data storage drive to be configured, each said data storage drive for acknowledging receipt thereof with a status response;

computer readable program code which causes a computer processor of said data storage library to, upon transmitting said library configuration data to a data storage drive,

assign, in a task monitor of said computer processor, a configuration first process state for said data storage drive to a process list of said task monitor, said task monitor starting a first time-out period for completion of receipt of said status response from said data storage drive of said process list; and

said task monitor responding to receipt of said status response from a data storage drive to be configured within said first time-out period, updating said configuration first process state for said status responding data storage drive to “

completed”

, removing said configuration first process state for said status responding data storage drive from said process list;

computer readable program code which causes a computer processor of said data storage library to respond to said “

completed”

state, by transmitting a request for drive unique information to said status responding data storage drive;

computer readable program code which causes a computer processor of said data storage library to, upon transmitting said request for drive unique information to said status responding data storage drive,

assign, in said task monitor, a configuration second process state for said status responding data storage drive to said process list, said task monitor starting a second time-out period for receipt of said drive unique information for said status responding data storage drive of said process list;

said task monitor responding to receipt of said drive unique information from a status responding data storage drive within said second time-out period, updating said configuration second process state for said information responding data storage drive to “

completed”

, removing said configuration second process state for said information responding data storage drive from said process list; and

computer readable program code which causes a computer processor of said data storage library to respond to said “

completed”

state, by storing said received drive unique information received from said information responding data storage drive.

19. The computer program product claim 18, wherein:

said configuration first process state comprises a process identifier; and

said configuration second process state comprises said process identifier.

20. The computer program product of claim 18, wherein:

said configuration first process state additionally comprises a separate index identifier for each said data storage drive assigned said configuration first process state in said process list of said task monitor; and

said configuration second process state additionally comprises a separate index identifier for each said status responding data storage drive assigned said configuration second process state in said process list of said task monitor.