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    RESOURCE ACTION IN CLUSTERED COMPUTER SYSTEM INCORPORATING PREPARE OPERATION
    1.
    发明申请
    RESOURCE ACTION IN CLUSTERED COMPUTER SYSTEM INCORPORATING PREPARE OPERATION 审中-公开
    集成计算机系统资源行为准备工作

    公开(公告)号：WO02088946A3

    公开(公告)日：2003-09-18

    申请号：PCT/GB0201809

    申请日：2002-04-18

    Applicant: IBM ,  IBM UK

    Inventor： GRIFFIN KEVIN CURTIS ,  MCDERMOTT MICHAEL JAMES ,  RANWEILER JAMES GREGORY

    IPC: G06F15/177 ,  G06F9/38 ,  G06F9/46 ,  G06F9/50 ,  G06F9/52 ,  G06F15/173

    CPC classification number: G06F9/5061 ,  G06F9/3885 ,  G06F9/3891 ,  G06F2209/505

    Abstract: An apparatus, clustered computer system, program product and method utilize a unique prepare operation in connection with a resource action to effectively "lock out" missing or inactive cluster entities such as nodes and cluster objects from rejoining a clustered computer system subsequent to the resource action. The prepare operation includes modification of one or more cluster configuration parameters associated with entities in a clustered computer system, such that any such cluster entity that is active during the prepare operation accepts the modifications, while any cluster entity that is inactive during the prepare operation does not accept the modifications. By modifying cluster configuration parameters for active cluster entities, attempts by previously-inactive cluster entities to activate or rejoin clustering after resource actions will generally fail due to incorrect or stale cluster configuration parameters for such entities, and thus such entities will be effectively blocked from being accepted into the clustered computer system.

    Abstract translation: 一种装置，集群计算机系统，程序产品和方法利用与资源动作相结合的唯一准备操作，以在资源动作之后有效地“锁定”丢失或不活动的集群实体（例如节点和集群对象）来重新连接集群计算机系统 。 准备操作包括修改与集群计算机系统中的实体相关联的一个或多个集群配置参数，使得在准备操作期间活动的任何这样的集群实体接受修改，而在准备操作期间处于非活动状态的任何集群实体 不接受修改。 通过修改活动集群实体的集群配置参数，先前不活动的集群实体在资源操作后激活或重新加入集群的尝试通常会由于这些实体的不正确或过时的集群配置参数而失败，因此这样的实体将被有效地阻止 接收到集群计算机系统中。

    COMPUTER CONTROLLED OPTIMIZED PAIRING OF DISK UNITS
    3.
    发明专利
    COMPUTER CONTROLLED OPTIMIZED PAIRING OF DISK UNITS 未知

    公开(公告)号：AU6835090A

    公开(公告)日：1991-07-25

    申请号：AU6835090

    申请日：1990-12-21

    Applicant: IBM

    Inventor： MARTIN DENNIS ROY ,  MCDERMOTT MICHAEL JAMES ,  PLUMLEE STUART DOUGLAS ,  SATIN ROBERT HARRY ,  WENGER ROBERT LEE

    IPC: G06F3/06 ,  G06F11/00 ,  G06F11/20 ,  G06F11/25 ,  G06F12/00 ,  G11B20/18 ,  G11C29/00 ,  G06F13/00 ,  G06F11/16

    Abstract: A method of pairing disk units in a computer system where mirroring is desirable is disclosed. Where possible, disk units are paired with other disk units located on a different bus. This provides the highest level of protection against inaccessible data due to data loss or failure of a component in the computer system. Where this is not possible, the remaining disk units are paired with disk units located on a different I/O processor, a different controller, or a different disk enclosure. Where none of these pairings are possible, the remaining disk units fall below the threshold level of protection and therefore cannot be paired within the segment. Any disk units that could not be paired are placed on a spare list. Several attempts are made to pair up disk units on the spare list. If all of these attempts fail, the paired disk units with the lowest level of protection are broken apart and added to the spare list, where attempts are again made to pair up the disk units on the spare list. After all units are paired, a pair of disk units is compared with other pairs of disk units to see if the level of protection can be increased by swapping mates. This comparison of pairs of disk units is repeated until the level of protection is optimized. Each time the computer system is started, a check is made to determine if a configuration change resulted in a lower level of protection. If so, the user is asked if he would like the disk units on the computer system to be re-paired to increase the level of protection.

    Computerised controlled optimized pairing of disk units
    4.
    发明专利
    Computerised controlled optimized pairing of disk units 未知

    公开(公告)号：SG70107A1

    公开(公告)日：2000-01-25

    申请号：SG1998002858

    申请日：1990-12-28

    Applicant: IBM

    Inventor： MARTIN DENNIS ROY ,  MCDERMOTT MICHAEL JAMES ,  PLUMLEE STUART DOUGLAS ,  SATIN ROBERT HARRY ,  WENGER ROBERT LEE

    IPC: G06F3/06 ,  G06F11/00 ,  G06F11/20 ,  G06F11/25 ,  G06F12/00 ,  G11B20/18 ,  G11C29/00 ,  G06F112/18

    Abstract: A method of pairing disk units in a computer system where mirroring is desirable is disclosed. Where possible, disk units are paired with other disk units located on a different bus. This provides the highest level of protection against inaccessible data due to data loss or failure of a component in the computer system. Where this is not possible, the remaining disk units are paired with disk units located on a different I/O processor, a different controller, or a different disk enclosure. Where none of these pairings are possible, the remaining disk units fall below the threshold level of protection and therefore cannot be paired within the segment. Any disk units that could not be paired are placed on a spare list. Several attempts are made to pair up disk units on the spare list. If all of these attempts fail, the paired disk units with the lowest level of protection are broken apart and added to the spare list, where attempts are again made to pair up the disk units on the spare list. After all units are paired, a pair of disk units is compared with other pairs of disk units to see if the level of protection can be increased by swapping mates. This comparison of pairs of disk units is repeated until the level of protection is optimized. Each time the computer system is started, a check is made to determine if a configuration change resulted in a lower level of protection. If so, the user is asked if he would like the disk units on the computer system to be re-paired to increase the level of protection.

    5.
    发明专利
    未知

    公开(公告)号：DE69030951D1

    公开(公告)日：1997-07-24

    申请号：DE69030951

    申请日：1990-12-28

    Applicant: IBM

    Inventor： MARTIN DENNIS ROY ,  MCDERMOTT MICHAEL JAMES ,  PLUMLEE STUART DOUGLAS ,  SATIN ROBERT HARRY ,  WENGER ROBERT LEE

    IPC: G06F3/06 ,  G06F11/00 ,  G06F11/20 ,  G06F11/25 ,  G06F12/00 ,  G11B20/18 ,  G11C29/00

    Abstract: A method of pairing disk units in a computer system where mirroring is desirable is disclosed. Where possible, disk units are paired with other disk units located on a different bus. This provides the highest level of protection against inaccessible data due to data loss or failure of a component in the computer system. Where this is not possible, the remaining disk units are paired with disk units located on a different I/O processor, a different controller, or a different disk enclosure. Where none of these pairings are possible, the remaining disk units fall below the threshold level of protection and therefore cannot be paired within the segment. Any disk units that could not be paired are placed on a spare list. Several attempts are made to pair up disk units on the spare list. If all of these attempts fail, the paired disk units with the lowest level of protection are broken apart and added to the spare list, where attempts are again made to pair up the disk units on the spare list. After all units are paired, a pair of disk units is compared with other pairs of disk units to see if the level of protection can be increased by swapping mates. This comparison of pairs of disk units is repeated until the level of protection is optimized. Each time the computer system is started, a check is made to determine if a configuration change resulted in a lower level of protection. If so, the user is asked if he would like the disk units on the computer system to be re-paired to increase the level of protection.

    Computer controlled optimized pairing of disk units
    7.
    发明专利
    Computer controlled optimized pairing of disk units 未知

    公开(公告)号：SG44411A1

    公开(公告)日：1997-12-19

    申请号：SG1996000223

    申请日：1990-12-28

    Applicant: IBM

    Inventor： MARTIN DENNIS ROY ,  MCDERMOTT MICHAEL JAMES ,  PLUMLEE STUART DOUGLAS ,  SATIN ROBERT HARRY ,  WENGER ROBERT LEE

    IPC: G06F3/06 ,  G06F11/00 ,  G06F11/20 ,  G06F11/25 ,  G06F12/00 ,  G11B20/18 ,  G11C29/00

    Abstract: A method of pairing disk units in a computer system where mirroring is desirable is disclosed. Where possible, disk units are paired with other disk units located on a different bus. This provides the highest level of protection against inaccessible data due to data loss or failure of a component in the computer system. Where this is not possible, the remaining disk units are paired with disk units located on a different I/O processor, a different controller, or a different disk enclosure. Where none of these pairings are possible, the remaining disk units fall below the threshold level of protection and therefore cannot be paired within the segment. Any disk units that could not be paired are placed on a spare list. Several attempts are made to pair up disk units on the spare list. If all of these attempts fail, the paired disk units with the lowest level of protection are broken apart and added to the spare list, where attempts are again made to pair up the disk units on the spare list. After all units are paired, a pair of disk units is compared with other pairs of disk units to see if the level of protection can be increased by swapping mates. This comparison of pairs of disk units is repeated until the level of protection is optimized. Each time the computer system is started, a check is made to determine if a configuration change resulted in a lower level of protection. If so, the user is asked if he would like the disk units on the computer system to be re-paired to increase the level of protection.

    Resource action in clustered computer system incorporating prepare operation
    8.
    发明专利
    Resource action in clustered computer system incorporating prepare operation 未知

    公开(公告)号：AU2002253319A1

    公开(公告)日：2002-11-11

    申请号：AU2002253319

    申请日：2002-04-18

    Applicant: IBM

    Inventor： RANWEILER JAMES GREGORY ,  GRIFFIN KEVIN CURTIS ,  MCDERMOTT MICHAEL JAMES

    IPC: G06F15/177 ,  G06F9/38 ,  G06F9/46 ,  G06F9/50 ,  G06F9/52 ,  G06F15/173

    Abstract: An apparatus, clustered computer system, program product and method utilize a unique prepare operation in connection with a resource action to effectively "lock out" missing or inactive cluster entities such as nodes and cluster objects from rejoining a clustered computer system subsequent to the resource action. The prepare operation includes the modification of one or more cluster configuration parameters associated with a plurality of entities in a clustered computer system, such that any such cluster entity that is active during the prepare operation accepts the modifications, while any such cluster entity that is inactive during the prepare operation does not accept the modifications. By modifying cluster configuration parameters for active cluster entities, attempts by previously-inactive cluster entities to activate or rejoin clustering subsequent to resource actions will generally fail due to an incorrect or stale cluster configuration parameters for such entities, and as a result, such entities will be effectively blocked from being accepted into the clustered computer system.

    9.
    发明专利
    未知

    公开(公告)号：DE69030951T2

    公开(公告)日：1998-01-15

    申请号：DE69030951

    申请日：1990-12-28

    Applicant: IBM

    Inventor： MARTIN DENNIS ROY ,  MCDERMOTT MICHAEL JAMES ,  PLUMLEE STUART DOUGLAS ,  SATIN ROBERT HARRY ,  WENGER ROBERT LEE

    IPC: G06F3/06 ,  G06F11/00 ,  G06F11/20 ,  G06F11/25 ,  G06F12/00 ,  G11B20/18 ,  G11C29/00

    Abstract: A method of pairing disk units in a computer system where mirroring is desirable is disclosed. Where possible, disk units are paired with other disk units located on a different bus. This provides the highest level of protection against inaccessible data due to data loss or failure of a component in the computer system. Where this is not possible, the remaining disk units are paired with disk units located on a different I/O processor, a different controller, or a different disk enclosure. Where none of these pairings are possible, the remaining disk units fall below the threshold level of protection and therefore cannot be paired within the segment. Any disk units that could not be paired are placed on a spare list. Several attempts are made to pair up disk units on the spare list. If all of these attempts fail, the paired disk units with the lowest level of protection are broken apart and added to the spare list, where attempts are again made to pair up the disk units on the spare list. After all units are paired, a pair of disk units is compared with other pairs of disk units to see if the level of protection can be increased by swapping mates. This comparison of pairs of disk units is repeated until the level of protection is optimized. Each time the computer system is started, a check is made to determine if a configuration change resulted in a lower level of protection. If so, the user is asked if he would like the disk units on the computer system to be re-paired to increase the level of protection.

    COMPUTER CONTROLLED OPTIMIZED PAIRING OF DISK UNITS
    10.
    发明专利
    COMPUTER CONTROLLED OPTIMIZED PAIRING OF DISK UNITS 未知

    公开(公告)号：CA2030940C

    公开(公告)日：1995-11-21

    申请号：CA2030940

    申请日：1990-11-27

    Applicant: IBM

    Inventor： MARTIN DENNIS ROY ,  MCDERMOTT MICHAEL JAMES ,  PLUMLEE STUART DOUGLAS ,  SATIN ROBERT HARRY ,  WENGER ROBERT LEE

    IPC: G06F3/06 ,  G06F11/00 ,  G06F11/20 ,  G06F11/25 ,  G06F12/00 ,  G11B20/18 ,  G11C29/00 ,  G06F12/16

    Abstract: A method of pairing disk units in a computer system where mirroring is desirable is disclosed. Where possible, disk units are paired with other disk units located on a different bus. This provides the highest level of protection against inaccessible data due to data loss or failure of a component in the computer system. Where this is not possible, the remaining disk units are paired with disk units located on a different I/O processor, a different controller, or a different disk enclosure. Where none of these pairings are possible, the remaining disk units fall below the threshold level of protection and therefore cannot be paired within the segment. Any disk units that could not be paired are placed on a spare list. Several attempts are made to pair up disk units on the spare list. If all of these attempts fail, the paired disk units with the lowest level of protection are broken apart and added to the spare list, where attempts are again made to pair up the disk units on the spare list. After all units are paired, a pair of disk units is compared with other pairs of disk units to see if the level of protection can be increased by swapping mates. This comparison of pairs of disk units is repeated until the level of protection is optimized. Each time the computer system is started, a check is made to determine if a configuration change resulted in a lower level of protection. If so, the user is asked if he would like the disk units on the computer system to be re-paired to increase the level of protection.

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