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1. 发明授权

US09141505B1 Adaptive failure survivability in a storage system using save time and data transfer after power loss 有权
标题翻译：存储系统中的自适应故障生存性，在断电后使用保存时间和数据传输
公开(公告)号：US09141505B1
公开(公告)日：2015-09-22
申请号：US13628259
申请日：2012-09-27
申请人： Preston F. Crow , Preethi Natarajan , Steven T. McClure
发明人： Preston F. Crow , Preethi Natarajan , Steven T. McClure
IPC分类号： G06F11/30
CPC分类号： G06F11/3058 , G06F1/30 , G06F3/0619 , G06F3/0653 , G06F3/0656 , G06F3/068 , G06F11/1441 , G06F11/2015 , G06F11/2071 , G06F11/30 , G06F11/3034 , G06F11/3037 , G06F11/3055 , G06F12/0868 , G06F2201/81 , G06F2212/1032 , G06F2212/21 , G06F2212/281 , G06F2212/313
摘要： Maintaining failure survivability in a storage system includes determining a save time corresponding to an amount of time needed to transfer system data from volatile memory to non-volatile memory, determining a threshold corresponding to time for batteries to run while transferring data from volatile memory to non-volatile memory after a power loss, and providing an indication in response to the save time being greater than the threshold. The system may include a plurality of directors and the save time and the threshold may be determined for each of the directors. Determining a threshold may include determining an amount of battery time provided by battery power following power loss and multiplying the amount of battery time by a factor less than one, such as 0.8.
摘要翻译：维护存储系统中的故障生存性包括确定对应于将系统数据从易失性存储器传输到非易失性存储器所需的时间量的保存时间，确定与将数据从易失性存储器传送到非易失性存储器时相当于电池运行的时间的阈值在功率损耗之后的非易失性存储器，以及响应于所述保存时间大于所述阈值提供指示。系统可以包括多个董事，并且可以为每个董事确定节省时间和阈值。确定阈值可以包括确定在电力损失之后由电池电力提供的电池时间量并且将电池时间量乘以小于1的因子，例如0.8。

2. 发明授权

US06895418B1 Versatile indirection in an extent based file system 有权
标题翻译：基于范围的文件系统中的多用途间接
公开(公告)号：US06895418B1
公开(公告)日：2005-05-17
申请号：US09301057
申请日：1999-04-28
申请人： Preston F. Crow , Robert S. Mason, Jr. , Steven T. McClure , Susan C. Nagy , Richard G. Wheeler
发明人： Preston F. Crow , Robert S. Mason, Jr. , Steven T. McClure , Susan C. Nagy , Richard G. Wheeler
IPC分类号： G06F17/30 , G06F12/00
CPC分类号： G06F17/30067 , Y10S707/99931 , Y10S707/99933 , Y10S707/99956
摘要： A memory storage device has a file storage operating system that uses inodes to access file segments. Each inode has a plurality of rows. A portion of the rows can store extents pointing, directly or indirectly, to data blocks. Each extent has a field to indicate whether the extent is an indirect extent or a direct extent.
摘要翻译：存储器存储设备具有使用inode访问文件段的文件存储操作系统。每个inode都有多行。行的一部分可以将范围直接或间接地存储到数据块。每个范围都有一个字段来指明范围是间接范围还是直接程度。

3. 发明授权

US06654772B1 Multi-volume extent based file system 有权
标题翻译：多卷扩展文件系统
公开(公告)号：US06654772B1
公开(公告)日：2003-11-25
申请号：US09301177
申请日：1999-04-28
申请人： Preston F. Crow , Robert S. Mason, Jr. , Steven T. McClure , Susan C. Nagy , Richard G. Wheeler
发明人： Preston F. Crow , Robert S. Mason, Jr. , Steven T. McClure , Susan C. Nagy , Richard G. Wheeler
IPC分类号： G06F1730
CPC分类号： G06F17/30067 , Y10S707/966 , Y10S707/99932 , Y10S707/99942 , Y10S707/99952 , Y10S707/99953 , Y10S707/99956
摘要： A memory storage device has a file storage operating system which uses an inode to record and find segments of each data file. The inode includes a plurality of rows. A portion of the rows are written with direct extents pointing to data blocks storing portions of file segments. At least two of the extents point to data blocks having addresses in different logical volumes.
摘要翻译：存储器存储装置具有文件存储操作系统，该操作系统使用一个inode来记录和找到每个数据文件的段。 inode包括多行。行的一部分以指向存储文件段的数据块的直接范围来写入。至少两个范围指向具有不同逻辑卷的地址的数据块。

4. 发明授权

US07085781B2 Multi-volume extent based file system 有权
公开(公告)号：US07085781B2
公开(公告)日：2006-08-01
申请号：US10720629
申请日：2003-11-24
申请人： Preston F. Crow , Robert S. Mason, Jr. , Steven T. McClure , Susan C. Nagy , Richard G. Wheeler
发明人： Preston F. Crow , Robert S. Mason, Jr. , Steven T. McClure , Susan C. Nagy , Richard G. Wheeler
IPC分类号： G06F17/30
CPC分类号： G06F17/30067 , Y10S707/966 , Y10S707/99932 , Y10S707/99942 , Y10S707/99952 , Y10S707/99953 , Y10S707/99956
摘要： A memory storage device has a file storage operating system which uses an inode to record and find segments of each data file. The inode includes a plurality of rows. A portion of the rows are written with direct extents pointing to data blocks storing portions of file segments. At least two of the extents point to data blocks having addresses in different logical volumes.

5. 发明授权

US08990520B1 Global memory as non-volatile random access memory for guest operating systems 有权
标题翻译：全局内存作为客户机操作系统的非易失性随机存取存储器
公开(公告)号：US08990520B1
公开(公告)日：2015-03-24
申请号：US13435328
申请日：2012-03-30
申请人： Hongliang Tang , Lixin Pang , Matthew H. Fredette , Patrick Brian Riordan , Uresh Vahalia , Steven T. McClure
发明人： Hongliang Tang , Lixin Pang , Matthew H. Fredette , Patrick Brian Riordan , Uresh Vahalia , Steven T. McClure
IPC分类号： G06F12/00 , G06F12/10
CPC分类号： G06F12/1072 , G06F11/00 , G06F11/14
摘要： Global memory of a storage system may be used to provide NVRAM capabilities to guest operating systems accessing the storage system. The non-volatility of NVRAM (i.e. that retains its information when power is turned off) provides that an NVRAM device provided by global memory may be used as a journaling device to track storage operations and facilitate recovery and/or failover processing in a storage system without needing to add additional hardware and/or other installed devices. Use of the global memory according to the system described herein to provide an NVRAM device, that may function as a journaling device, provides for the speeding up of transactions, thereby improving metadata intensive operations performance and reducing recovery time and/or failover time of a storage system without adding additional hardware support.
摘要翻译：可以使用存储系统的全局存储器来向访问存储系统的客户操作系统提供NVRAM功能。 NVRAM的非易失性（即在电源关闭时保留其信息）规定，由全局存储器提供的NVRAM设备可用作日志记录设备以跟踪存储操作并促进存储系统中的恢复和/或故障转移处理而不需要添加额外的硬件和/或其他已安装的设备。根据本文描述的系统使用全局存储器来提供可用作日志记录设备的NVRAM设备，用于提高事务的加速，从而提高元数据密集型操作性能并减少恢复时间和/或故障转移时间存储系统，无需添加额外的硬件支持。

6. 发明授权

US08051260B1 Determining environmental availability in a storage subsystem 有权
标题翻译：确定存储子系统中的环境可用性
公开(公告)号：US08051260B1
公开(公告)日：2011-11-01
申请号：US10881131
申请日：2004-06-30
申请人： Steven T. McClure , Scott B. Gordon , Robert Decrescenzo , Timothy M. Johnson , Zhi-Gang Liu
发明人： Steven T. McClure , Scott B. Gordon , Robert Decrescenzo , Timothy M. Johnson , Zhi-Gang Liu
IPC分类号： G06F11/22 , G06F11/273
CPC分类号： G06F11/3037 , G06F11/3034 , G06F11/3058
摘要： A method for safeguarding data stored in a memory of a data storage system includes monitoring values of a subset of environmental variables associated with the data-storage system and updating a portion of a table containing values of environmental variables associated with the data-storage system. The table includes values for environmental variables that are not in the subset of environmental variables monitored. The values of the environmental variables are then inspected. On the basis of the inspection, a condition in which there exists a high-risk of data loss is determined.
摘要翻译：用于保护存储在数据存储系统的存储器中的数据的方法包括监视与数据存储系统相关联的环境变量的子集的值，并且更新包含与数据存储系统相关联的环境变量的值的表的一部分。该表包括不在监控环境变量子集中的环境变量的值。然后检查环境变量的值。在检查的基础上，确定存在高风险的数据丢失的条件。

7. 发明授权

US07343432B1 Message based global distributed locks with automatic expiration for indicating that said locks is expired 有权
标题翻译：基于消息的全局分布式锁具有自动过期，用于指示所述锁已过期
公开(公告)号：US07343432B1
公开(公告)日：2008-03-11
申请号：US10666773
申请日：2003-09-19
申请人： Brett D. Niver , Steven R. Chalmer , Steven T. McClure
发明人： Brett D. Niver , Steven R. Chalmer , Steven T. McClure
IPC分类号： G06F13/00 , G06F13/28 , G06F17/30
CPC分类号： G06F9/526
摘要： Described is a distributed lock processing technique that may be used to coordinate access to globally accessed resource between endpoints using the connecting message fabric. Processors in a data storage system communicate using the message switch of the message fabric. Each processor is an endpoint within a data storage system. Each endpoint, prior to requesting a lock, dynamically determines a current lock owner of the lock to be requested in accordance with a determination of which endpoints are available as lock owners at the current time. The lock request is issued to the current lock owner with a requested time period used by the lock owner to determine an expiration time. The lock expires automatically at the expiration time even if the lock holder becomes unavailable. If the current lock owner becomes unavailable, a new lock owner is determined prior to the next request for that lock.
摘要翻译：描述了一种分布式锁处理技术，其可用于协调使用连接消息结构的端点之间对全局访问资源的访问。数据存储系统中的处理器使用消息结构的消息交换进行通信。每个处理器是数据存储系统中的端点。在请求锁之前，每个端点根据在当前时间作为锁拥有者可用的哪些端点的确定动态地确定要请求的锁的当前锁拥有者。锁请求将以锁所有者使用的请求时间段发出给当前锁所有者以确定到期时间。即使锁定架不可用，锁定也将在到期时自动过期。如果当前的锁拥有者变得不可用，则在下一次请求该锁之前确定新的锁拥有者。

8. 发明授权

US07136969B1 Using the message fabric to maintain cache coherency of local caches of global memory 有权
公开(公告)号：US07136969B1
公开(公告)日：2006-11-14
申请号：US10462949
申请日：2003-06-17
申请人： Brett D. Niver , Steven R. Chalmer , Steven T. McClure
发明人： Brett D. Niver , Steven R. Chalmer , Steven T. McClure
IPC分类号： G06F12/00
CPC分类号： G06F12/0831 , G06F12/0808
摘要： Described is a technique for maintaining local cache coherency between endpoints using the connecting message fabric. Processors in a data storage system communicate using the message fabric. Each processor is an endpoint having its own local cache storage in which portions of global memory may be locally cached. A write through caching technique is described. Each local cache line of data of each processor is either in an invalid or a shared state. When a write to global memory is performed by a processor (write miss or a write hit), the following are performed atomically: the global memory is updated, other processor's local cache lines of the data are invalidated, verification of invalidation is received by the processor, and the processor's local copy is updated. Other processors' cache lines are invalidated by transmission of an invalidate command by the processor. A processor updates its local cache lines upon the next read miss or write miss of the updated cacheable global memory.

9. 发明授权

US07996848B1 Systems and methods for suspending and resuming threads 有权
标题翻译：挂起和恢复线程的系统和方法
公开(公告)号：US07996848B1
公开(公告)日：2011-08-09
申请号：US11324989
申请日：2006-01-03
申请人： Steven T. McClure , Steven R. Chalmer , Brett D. Niver
发明人： Steven T. McClure , Steven R. Chalmer , Brett D. Niver
IPC分类号： G06F9/46 , G06F7/00 , G06F17/00 , G06F13/00 , G06F12/00
CPC分类号： G06F9/526 , G06F9/485
摘要： In a methods and systems of controlling a process's access to a device driver, a lock may be used to establish a process wait state or to wake up one or more processes. A spinlock may be used to acquire a lock associated with a device driver. The lock includes a lock value representing the availability of the lock. If the lock value is a first value, the process acquires the lock and sets the lock value to a second value. Otherwise, the process returns to the step of using the spinlock to acquire the lock associated with the device driver. If the lock is acquired, the process accesses the device driver. If the device is not ready, the process is set to wait for the lock. Waiting for the lock comprises setting a field of the process to a pointer to the lock and setting a state of the process to waiting. After the device has been successfully accessed or the process has been set to wait for the lock, the lock is released typically by setting the lock value to the first value.
摘要翻译：在控制进程对设备驱动程序的访问的方法和系统中，可以使用锁来建立进程等待状态或者唤醒一个或多个进程。自旋锁可用于获取与设备驱动程序相关联的锁定。该锁包含一个表示锁的可用性的锁值。如果锁值是第一个值，则该进程获取锁定并将锁定值设置为第二个值。否则，该过程返回到使用自旋锁来获取与设备驱动程序相关联的锁定的步骤。如果锁获取，则进程访问设备驱动程序。如果设备未准备就绪，则该进程被设置为等待锁定。等待锁包括将进程的一个字段设置为指向该锁的指针，并将进程的状态设置为等待。设备成功访问或进程已设置为等待锁定后，通常通过将锁定值设置为第一个值来释放锁定。

10. 发明授权

US07810094B1 Distributed task scheduling for symmetric multiprocessing environments 有权
标题翻译：对称多处理环境的分布式任务调度
公开(公告)号：US07810094B1
公开(公告)日：2010-10-05
申请号：US11239776
申请日：2005-09-30
申请人： Steven T. McClure , Steven R. Chalmer , Brett D. Niver
发明人： Steven T. McClure , Steven R. Chalmer , Brett D. Niver
IPC分类号： G06F9/46
CPC分类号： G06F9/4881 , G06F9/526
摘要： A process scheduling method includes executing a plurality of symmetric schedulers on respective processors of a multiprocessing system. Each scheduler periodically accesses a shared lock to obtain exclusive access to a shared scheduling data structure including (a) process information identifying the processes, and (b) scheduling information reflecting the executability and priorities of the processes. After obtaining the lock, each scheduler performs a scheduling routine including (a) utilizing the scheduling information and a scheduling algorithm to identify a next executable process, and (b) (1) activating the identified process to begin executing on the processor on which the scheduler is executing, and (2) updating the scheduling information to reflect the activation of the identified process. The scheduler then accesses the lock to relinquish exclusive access to the scheduling data structure. The fully symmetric scheduler provides for efficient, high-performance scheduling especially in embedded multiprocessing computer systems in which the rate of process context switches may be several thousand per second.
摘要翻译：一种过程调度方法包括在多处理系统的各个处理器上执行多个对称调度器。每个调度器周期性地访问共享锁，以获得对共享调度数据结构的独占访问，包括（a）识别过程的过程信息，以及（b）调度反映过程的可执行性和优先级的信息。在获得锁定之后，每个调度器执行调度程序，其包括（a）利用调度信息和调度算法来识别下一个可执行过程，以及（b）（1）激活所识别的过程以开始在处理器上执行调度器正在执行，并且（2）更新调度信息以反映所识别的过程的激活。调度器然后访问锁以放弃对调度数据结构的独占访问。完全对称的调度器提供有效的高性能调度，特别是在其中处理上下文切换速率可以是几千个每秒的嵌入式多处理计算机系统中。

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