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21. 发明授权

US07926059B2 Method and apparatus for decomposing I/O tasks in a RAID system 有权
标题翻译：用于分解RAID系统中的I / O任务的方法和装置
公开(公告)号：US07926059B2
公开(公告)日：2011-04-12
申请号：US12465179
申请日：2009-05-13
申请人： Srinivasan Viswanathan , James Leong , Rajesh Sundaram , Douglas P. Doucette , Scott Schoenthal , Stephen H. Strange
发明人： Srinivasan Viswanathan , James Leong , Rajesh Sundaram , Douglas P. Doucette , Scott Schoenthal , Stephen H. Strange
IPC分类号： G06F9/46 , G06F13/00
CPC分类号： G06F3/0601 , G06F3/061 , G06F3/0611 , G06F3/0655 , G06F3/0659 , G06F3/0689 , G06F9/4881 , G06F11/2087
摘要： A data access request to a file system is decomposed into a plurality of lower-level I/O tasks. A logical combination of physical storage components is represented as a hierarchical set of objects. A parent I/O task is generated from a first object in response to the data access request. A child I/O task is generated from a second object to implement a portion of the parent I/O task. The parent I/O task is suspended until the child I/O task completes. The child I/O task is executed in response to an occurrence of an event that a resource required by the child I/O task is available. The parent I/O task is resumed upon an event indicating completion of the child I/O task. Scheduling of any child I/O task is not conditional on execution of the parent I/O task, and a state diagram regulates the child I/O tasks.
摘要翻译：对文件系统的数据访问请求被分解成多个较低级的I / O任务。物理存储组件的逻辑组合被表示为一组分层对象。响应于数据访问请求，从第一对象生成父I / O任务。从第二个对象生成子I / O任务，以实现父I / O任务的一部分。父I / O任务被暂停，直到子I / O任务完成。响应于发生子I / O任务所需的资源可用的事件，执行子I / O任务。在指示完成子I / O任务的事件后，将恢复父I / O任务。任何子I / O任务的调度不是执行父I / O任务的条件，而状态图则规定了子I / O任务。

22. 发明申请

US20090222829A1 METHOD AND APPARATUS FOR DECOMPOSING I/O TASKS IN A RAID SYSTEM 有权
标题翻译：用于在RAID系统中分解I / O任务的方法和装置
公开(公告)号：US20090222829A1
公开(公告)日：2009-09-03
申请号：US12465179
申请日：2009-05-13
申请人： James Leong , Rajesh Sundaram , Douglas P. Doucette , Scott Schoenthal , Stephen H. Strange , Srinivasan Viswanathan
发明人： James Leong , Rajesh Sundaram , Douglas P. Doucette , Scott Schoenthal , Stephen H. Strange , Srinivasan Viswanathan
IPC分类号： G06F9/46 , G06F12/08
CPC分类号： G06F3/0601 , G06F3/061 , G06F3/0611 , G06F3/0655 , G06F3/0659 , G06F3/0689 , G06F9/4881 , G06F11/2087
摘要： A data access request to a file system is decomposed into a plurality of lower-level I/O tasks. A logical combination of physical storage components is represented as a hierarchical set of objects. A parent I/O task is generated from a first object in response to the data access request. A child I/O task is generated from a second object to implement a portion of the parent I/O task. The parent I/O task is suspended until the child I/O task completes. The child I/O task is executed in response to an occurrence of an event that a resource required by the child I/O task is available. The parent I/O task is resumed upon an event indicating completion of the child I/O task. Scheduling of any child I/O task is not conditional on execution of the parent I/O task, and a state diagram regulates the child I/O tasks.
摘要翻译：对文件系统的数据访问请求被分解成多个较低级的I / O任务。物理存储组件的逻辑组合被表示为一组分层对象。响应于数据访问请求，从第一对象生成父I / O任务。从第二个对象生成子I / O任务，以实现父I / O任务的一部分。父I / O任务被暂停，直到子I / O任务完成。响应于发生子I / O任务所需的资源可用的事件，执行子I / O任务。在指示完成子I / O任务的事件后，将恢复父I / O任务。任何子I / O任务的调度不是执行父I / O任务的条件，而状态图则规定了子I / O任务。

23. 发明授权

US07539991B2 Method and apparatus for decomposing I/O tasks in a raid system 有权
标题翻译：在RAID系统中分解I / O任务的方法和装置
公开(公告)号：US07539991B2
公开(公告)日：2009-05-26
申请号：US10105078
申请日：2002-03-21
申请人： James Leong , Rajesh Sundaram , Douglas P. Doucette , Scott Schoenthal , Stephen H. Strange , Srinivasan Viswanathan
发明人： James Leong , Rajesh Sundaram , Douglas P. Doucette , Scott Schoenthal , Stephen H. Strange , Srinivasan Viswanathan
IPC分类号： G06F9/46 , G06F3/00 , G06F9/44 , G06F13/00 , G06F13/28 , G06F11/00
CPC分类号： G06F3/0601 , G06F3/061 , G06F3/0611 , G06F3/0655 , G06F3/0659 , G06F3/0689 , G06F9/4881 , G06F11/2087
摘要： The present invention implements an I/O task architecture in which an I/O task requested by the storage manager, for example a stripe write, is decomposed into a number of lower-level asynchronous I/O tasks that can be scheduled independently. Resources needed by these lower-level I/O tasks are dynamically assigned, on an as-needed basis, to balance the load and use resources efficiently, achieving higher scalability. A hierarchical order is assigned to the I/O tasks to ensure that there is a forward progression of the higher-level I/O task and to ensure that resources do not become deadlocked.
摘要翻译：本发明实现了I / O任务架构，其中由存储管理器请求的I / O任务（例如条带写入）被分解成可以独立调度的多个较低级别的异步I / O任务。这些较低级I / O任务所需的资源根据需要动态分配，以有效平衡负载和使用资源，实现更高的可扩展性。分层次序分配给I / O任务，以确保上级I / O任务有前进的进程，并确保资源不会成为死锁。

24. 发明授权

US07200715B2 Method for writing contiguous arrays of stripes in a RAID storage system using mapped block writes 有权
标题翻译：使用映射块写入在RAID存储系统中写入连续的条带阵列的方法
公开(公告)号：US07200715B2
公开(公告)日：2007-04-03
申请号：US10105034
申请日：2002-03-21
申请人： Steven R. Kleiman , Rajesh Sundaram , Douglas P. Doucette , Stephen H. Strange , Srinivasan Viswanathan
发明人： Steven R. Kleiman , Rajesh Sundaram , Douglas P. Doucette , Stephen H. Strange , Srinivasan Viswanathan
IPC分类号： G06F13/28
CPC分类号： G06F3/0613 , G06F3/0643 , G06F3/0655 , G06F3/0689 , G06F11/1076
摘要： The invention features a method for controlling storage of data in a plurality of storage devices each including storage blocks, for example, in a RAID array. The method includes receiving a plurality of write requests associated with data, and buffering the write requests. A file system defines a group of storage blocks, responsive to disk topology information. The group includes a plurality of storage blocks in each of the plurality of storage devices. Each data block of the data to be written is associated with a respective one of the storage blocks, for transmitting the association to the plurality of storage devices.
摘要翻译：本发明的特征在于一种用于控制多个存储设备中的数据存储的方法，每个存储设备包括例如RAID阵列中的存储块。该方法包括接收与数据相关联的多个写入请求，并缓冲写入请求。文件系统根据磁盘拓扑信息定义一组存储块。该组包括多个存储装置中的每一个中的多个存储块。要写入的数据的每个数据块与相应的一个存储块相关联，用于将关联发送到多个存储设备。

25. 发明授权

US07111147B1 Location-independent RAID group virtual block management 有权
标题翻译：位置无关的RAID组虚拟块管理
公开(公告)号：US07111147B1
公开(公告)日：2006-09-19
申请号：US10394890
申请日：2003-03-21
申请人： Stephen H. Strange , Scott Schoenthal , Douglas P. Doucette , Srinivasan Viswanathan
发明人： Stephen H. Strange , Scott Schoenthal , Douglas P. Doucette , Srinivasan Viswanathan
IPC分类号： G06F11/07 , G06F12/16 , G06F12/08
CPC分类号： G06F3/0607 , G06F3/0643 , G06F3/0647 , G06F3/0665 , G06F3/0689 , G06F11/1092 , G06F11/2056 , G06F2211/1023 , H04L67/1097
摘要： A technique maps the capacity of storage devices, such as disks, into any RAID group of a volume of a storage system regardless of the location of the RAID group within a volume block number (VBN) space of the volume. The technique separates disks and mapped VBN ranges, allowing for flexibility in the description and extension of RAID group capacities, while providing disk addition policies that support location-independent disk insertion into RAID groups. The technique also provides a disk label structure that supports the provision of multiple VBN ranges within a RAID group and within individual disks. Moreover, the technique provides file system support for allocation and topology management of the multiple mapped VBN ranges within disks and RAID groups, as well as noncontiguous VBN ranges across the RAID groups in the volume.
摘要翻译：一种技术将诸如磁盘的存储设备的容量映射到存储系统的卷的任何RAID组中，而不管该卷的卷块号（VBN）空间内的RAID组的位置如何。该技术分离磁盘和映射的VBN范围，允许在RAID组容量的描述和扩展方面具有灵活性，同时提供支持位置无关磁盘插入RAID组的磁盘添加策略。该技术还提供了一种磁盘标签结构，它支持在RAID组内和各个磁盘内提供多个VBN范围。此外，该技术为磁盘和RAID组中的多个映射VBN范围以及卷中的RAID组之间的不连续的VBN范围提供文件系统支持。

26. 发明授权

US06836820B1 Flexible disabling of disk sets 有权
标题翻译：灵活禁用磁盘组
公开(公告)号：US06836820B1
公开(公告)日：2004-12-28
申请号：US10084405
申请日：2002-02-25
申请人： Srinivasan Viswanathan , Douglas P. Doucette
发明人： Srinivasan Viswanathan , Douglas P. Doucette
IPC分类号： G06F1200
CPC分类号： G06F11/1084 , G06F3/0605 , G06F3/0634 , G06F3/0689 , G06F11/2094 , G06F2211/103 , G06F2211/1061
摘要： The invention provides flexible disabling of disk sets. One or more disks in a RAID subsystem may be identified as temporarily inactive. The disk or disks are then marked as inactive by setting one of a set of bits associated with each disk in the RAID subsystem. If an inactivated disk is a data disk, marking it as inactive also marks it as read only. If an inactivated disk is a parity disk, the RAID group to which it supplies parity is also inactivated and a file system must look to a mirror of the inactivated RAID subsystem for its data. When a data disk is reactivated it is marked as read/write by clearing its associated bit. When a parity disk is reactivated it is also marked as read/write by clearing its bit, however, it is not available for use until it has synchronized its operation with its mirror.
摘要翻译：本发明提供了灵活的磁盘组禁用。 RAID子系统中的一个或多个磁盘可能被标识为暂时无效。然后通过设置与RAID子系统中的每个磁盘相关联的一组位中的一个来将磁盘或磁盘标记为无效。如果未激活的磁盘是数据磁盘，将其标记为不活动也将其标记为只读。如果未激活的磁盘是奇偶校验磁盘，则其提供奇偶校验的RAID组也将被禁用，并且文件系统必须查看其数据的未激活RAID子系统的镜像。当数据磁盘重新启动时，通过清除其相关位来将其标记为读/写。当重新激活奇偶校验磁盘时，它也会通过清除它的位来标记为读/写，但是它不可用，直到它与其镜像同步其操作。

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