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    Destaging tracks with holes in storage system
    2.
    发明专利
    Destaging tracks with holes in storage system 未知

    公开(公告)号：GB2591424B

    公开(公告)日：2021-11-10

    申请号：GB202106810

    申请日：2019-09-30

    Applicant: IBM

    Inventor： LOKESH GUPTA ,  KYLER ANDERSON ,  KEVIN JOHN ASH ,  MATTHEW BORLICK

    IPC: G06N3/08 ,  G06F12/08

    Abstract: A machine learning module receives inputs comprising attributes of a storage controller, where the attributes affect performance parameters for performing stages and destages in the storage controller. In response to an event, the machine learning module generates, via forward propagation, an output value that indicates whether to fill holes in a track of a cache by staging data to the cache prior to destage of the track. A margin of error is calculated based on comparing the generated output value to an expected output value, where the expected output value is generated from an indication of whether it is correct to fill holes in a track of the cache by staging data to the cache prior to destage of the track. An adjustment is made of weights of links that interconnect nodes of the plurality of layers via back propagation to reduce the margin of error.

    Virtual storage drive management in a data storage system
    4.
    发明专利
    Virtual storage drive management in a data storage system 未知

    公开(公告)号：GB2584064B

    公开(公告)日：2021-04-14

    申请号：GB202014835

    申请日：2019-02-15

    Applicant: IBM

    Inventor： MATTHEW BORLICK ,  LOKESH GUPTA ,  KEVIN JOHN ASH ,  KARL ALLEN NIELSEN

    IPC: G06F11/10 ,  G06F3/06

    Abstract: In one embodiment, virtual storage drives are allocated to RAID arrays so that no two virtual storage drives of a RAID array are mapped to the same physical storage drive. In another aspect, error handling routines are limited to virtual storage drives impacted by an error in a physical storage drive so that virtual storage drives of the physical storage drive not impacted by the error are bypassed. In yet another aspect, cache operations to a target virtual storage drive may be throttled as a function of both a limit imposed on cache operations directed to the RAID array to which the virtual storage drive is allocated, and a separate limit on cache operations directed to a group of virtual storage drives which are mapped to the same physical storage drive as the target virtual storage drive. Other features and aspects may be realized, depending upon the particular application.

    Selecting one of multiple cache eviction algorithms to use to evict track from the cache
    5.
    发明专利
    Selecting one of multiple cache eviction algorithms to use to evict track from the cache 未知

    公开(公告)号：GB2588037A

    公开(公告)日：2021-04-14

    申请号：GB202019055

    申请日：2019-05-13

    Applicant: IBM

    Inventor： LOKESH GUPTA ,  MATTHEW BORLICK ,  KYLER ANDERSON ,  KEVIN JOHN ASH

    IPC: G06F12/00

    Abstract: A machine learning module selects one of multiple cache eviction algorithms to use to evict a track from the cache. A first cache eviction algorithm determines tracks to evict from the cache. A second cache eviction algorithm determines tracks to evict from the cache, wherein the first and second cache eviction algorithms use different eviction schemes. At least one machine learning module is executed to produce output indicating one of the first cache eviction algorithm and the second cache eviction algorithm to use to select a track to evict from the cache. A track is evicted that is selected by one of the first and second cache eviction algorithms indicated in the output from the at least one machine learning module.

    Using track locks and stride group locks to manage cache operations
    6.
    发明专利
    Using track locks and stride group locks to manage cache operations 未知

    公开(公告)号：GB2585320A

    公开(公告)日：2021-01-06

    申请号：GB202017405

    申请日：2019-04-01

    Applicant: IBM

    Inventor： LOKESH GUPTA ,  MATTHEW BORLICK ,  KEVIN JOHN ASH

    IPC: G06F12/0866 ,  G06F3/06 ,  G06F12/0895

    Abstract: Provided are a computer program product, system, and method for using track locks and stride group locks to manage cache operations. A group of tracks from the storage devices are stored in a cache. Exclusive track locks for tracks in the group in the cache are granted for writes to the tracks in the group in the cache, wherein exclusive track locks can be simultaneously held for writes to different tracks in the cache. An exclusive group lock for the group of tracks in the cache is granted to destage the tracks in the group from the cache to the storage devices. The exclusive group lock is released in response to completing the destage of the tracks in the group in the cache to the storage devices.

    Injecting trap code in an execution path of a process executing a program to generate a trap address range to detect potential malicious code
    8.
    发明专利
    Injecting trap code in an execution path of a process executing a program to generate a trap address range to detect potential malicious code 未知

    公开(公告)号：GB2586409B

    公开(公告)日：2021-07-14

    申请号：GB202016053

    申请日：2019-03-06

    Applicant: IBM

    Inventor： LOKESH GUPTA ,  MATTHEW BORLICK ,  TRUNG N NGUYEN ,  MICAH ROBISON

    IPC: G06F21/56 ,  G06F21/54 ,  G06F21/57

    Abstract: Provided are a computer program product, system, and method for injecting trap code in an execution path of a process executing a program to generate a trap address range to detect potential malicious code. A specified type of command is processed in application code and, in response, trap code is executed to allocate a trap address range. The specified type of command is executed in the application code. A determination is made as to whether an accessing application accesses the trap address range. At least one of transmitting a notification that the accessing application comprises potentially malicious code, monitoring the execution of the accessing application, and restricting execution of the accessing application is performed in response to determining that the accessing application accessed the trap address range.

    Injecting trap code in an execution path or a process executing a program to generate a trap address range to detect potential malicious code
    9.
    发明专利
    Injecting trap code in an execution path or a process executing a program to generate a trap address range to detect potential malicious code 未知

    公开(公告)号：GB2586409A

    公开(公告)日：2021-02-17

    申请号：GB202016053

    申请日：2019-03-06

    Applicant: IBM

    Inventor： LOKESH GUPTA ,  MATTHEW BORLICK ,  TRUNG N NGUYEN ,  MICAH ROBISON

    IPC: G06F21/56 ,  G06F21/54 ,  G06F21/57

    Abstract: Provided area computer program product, system, and method for injecting trap code in an execution path of a process executing a program to generate a trap address range to detect potential malicious code. A specified type of command is processed in application code and, in response, trap code is executed to allocate a trap address range. The specified type of command is executed in the application code. A determination is made as to whether an accessing application accesses the trap address range. At least one of transmitting a notification that the accessing application comprises potentially malicious code, monitoring the execution of the accessing application, and restricting execution of the accessing application is performed in response to determining that the accessing application accessed the trap address range.

    Synchronized safe data commit scans in multiple data storage systems
    10.
    发明专利
    Synchronized safe data commit scans in multiple data storage systems 未知

    公开(公告)号：GB2586398A

    公开(公告)日：2021-02-17

    申请号：GB202015329

    申请日：2019-02-27

    Applicant: IBM

    Inventor： LOKESH GUPTA ,  MATTHEW BORLICK ,  ROGER HATHORN

    IPC: G06F17/00

    Abstract: In one aspect of the present description, safe data commit scan operations of individual data storage systems of a distributed data storage system may be synchronized to reduce the occurrence of reductions in input/output (I/O) response times. In one embodiment, a set of safe data commit scan operations of the individual data storage systems of a distributed data storage system are synchronously timed to substantially overlap in time within a single synchronized safe data commit scan set interval to reduce or eliminate the occurrences of reductions in input/output response times outside the synchronized safe data commit scan set interval. Other features and aspects may be realized, depending upon the particular application.

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