公开(公告)号：US20130019067A1

公开(公告)日：2013-01-17

申请号：US13181129

申请日：2011-07-12

申请人： Murali VILAYANNUR ,  Jinyuan LI ,  Satyam B. VAGHANI

发明人： Murali VILAYANNUR ,  Jinyuan LI ,  Satyam B. VAGHANI

IPC分类号： G06F12/08

CPC分类号： G06F12/08 ,  G06F12/0815 ,  G06F12/0866 ,  G06F17/30171 ,  G06F2212/466

摘要： Metadata of a shared file in a clustered file system is changed in a way that ensures cache coherence amongst servers that can simultaneously access the shared file. Before a server changes the metadata of the shared file, it waits until no other server is attempting to access the shared file, and all I/O operations to the shared file are blocked. After writing the metadata changes to the shared file, local caches of the other servers are updated, as needed, and I/O operations to the shared file are unblocked.

摘要翻译： 集群文件系统中的共享文件的元数据以确保可以同时访问共享文件的服务器之间的高速缓存一致性的方式进行更改。 在服务器更改共享文件的元数据之前，它等待直到其他服务器尝试访问共享文件，并且所有对共享文件的I / O操作都被阻止。 将元数据更改写入共享文件后，根据需要更新其他服务器的本地缓存，并解除对共享文件的I / O操作。

公开(公告)号：US20130046740A1

公开(公告)日：2013-02-21

申请号：US13212002

申请日：2011-08-17

申请人： Jinyuan LI ,  Murali VILAYANNUR ,  Mayank RAWAT ,  Satyam B. VAGHANI

发明人： Jinyuan LI ,  Murali VILAYANNUR ,  Mayank RAWAT ,  Satyam B. VAGHANI

IPC分类号： G06F17/30

CPC分类号： G06F17/30165 ,  G06F17/30079

摘要： A shared file system for a group of host computer systems is upgraded in-place in a manner that the shared file system can remain online and accessible to the host computer systems. Each host computer system first loads a new file system driver that is backward compatible with a driver that is currently used by them to interact with the file system. Second, one of the host computer systems acquires locks to file system management data structures of the file system, upgrades the file system management data structures, and upon completion thereof, notifies the other host computer system that the upgrade to the file system management data structures is complete.

摘要翻译： 用于一组主机计算机系统的共享文件系统以就地方式升级，使得共享文件系统可以保持联机并且可以被主机计算机系统访问。 每个主机系统首先加载一个新的文件系统驱动程序，该文件系统驱动程序向后兼容当前由它们与文件系统交互的驱动程序。 其次，主机计算机系统中的一个获取文件系统的文件系统管理数据结构的锁，升级文件系统管理数据结构，并且在完成之后，通知另一个主机计算机系统升级到文件系统管理数据结构 做完了。

公开(公告)号：US20120331242A1

公开(公告)日：2012-12-27

申请号：US13166486

申请日：2011-06-22

申请人： Faraz SHAIKH ,  Murali VILAYANNUR ,  Satyam B. VAGHANI ,  Kiran JOSHI

发明人： Faraz SHAIKH ,  Murali VILAYANNUR ,  Satyam B. VAGHANI ,  Kiran JOSHI

IPC分类号： G06F12/02 ,  G06F12/00

CPC分类号： G06F3/0608 ,  G06F3/0631 ,  G06F3/0652 ,  G06F3/0665 ,  G06F3/067 ,  G06F9/45533 ,  G06F9/45558 ,  G06F12/0253 ,  G06F12/0261 ,  G06F12/0269 ,  G06F12/0276 ,  G06F17/30138 ,  G06F17/30194 ,  G06F17/30233 ,  G06F2009/45579 ,  G06F2212/1044 ,  G06F2212/154

摘要： Free storage blocks previously allocated to a logical block device are released back to an underlying storage system supporting the logical block device in a manner that does not conflict with write operations that may be issued to the free storage blocks at about the same time. According to a first technique, write operations on the same storage blocks to be released are paused until the underlying storage system has completed the releasing operation or, if the write operations are issued earlier than when the underlying storage system actually performs the releasing operation, such storage blocks are not released. According to a second technique, a special file is allocated the free storage blocks, which are then made available for safe releasing.

摘要翻译： 先前分配给逻辑块设备的空闲存储块以与同时发布到空闲存储块的写入操作不冲突的方式被释放回支持逻辑块设备的底层存储系统。 根据第一技术，暂停对要释放的相同存储块的写入操作，直到底层存储系统已经完成释放操作，或者如果写入操作早于底层存储系统实际执行释放操作时发出，则 存储块未被释放。 根据第二种技术，将特殊文件分配给空闲的存储块，然后使其可用于安全释放。

公开(公告)号：US20120167080A1

公开(公告)日：2012-06-28

申请号：US12976123

申请日：2010-12-22

申请人： Murali VILAYANNUR ,  Krishna YADAPPANAVAR ,  Faraz SHAIKH ,  Manjunath RAJASHEKHAR ,  Satyam B. VAGHANI

发明人： Murali VILAYANNUR ,  Krishna YADAPPANAVAR ,  Faraz SHAIKH ,  Manjunath RAJASHEKHAR ,  Satyam B. VAGHANI

IPC分类号： G06F9/455

CPC分类号： G06F3/064 ,  G06F3/0608 ,  G06F3/067 ,  G06F9/45558 ,  G06F17/30182 ,  G06F2009/45579 ,  G06F2206/1004

摘要： A virtualized computer system employs a virtual disk with a space efficient (SE) format to store data for virtual machines running therein. The SE format allows for defragmentation at a fine-grained level, where unused, stale, and zero blocks are moved to the end of the virtual disk so that the virtual disk may be truncated and space reclaimed by the underlying storage system as part of a special defragmentation process.

摘要翻译： 虚拟化计算机系统采用具有空间效率（SE）格式的虚拟磁盘来存储在其中运行的虚拟机的数据。 SE格式允许在细粒度级别进行碎片整理，其中未使用，过时和零块移动到虚拟磁盘的末尾，以便虚拟磁盘可能被截断并由底层存储系统进行空间回收，作为 特殊的碎片整理过程

公开(公告)号：US20120310909A1

公开(公告)日：2012-12-06

申请号：US13587713

申请日：2012-08-16

申请人： Satyam B. VAGHANI ,  Murali VILAYANNUR

发明人： Satyam B. VAGHANI ,  Murali VILAYANNUR

IPC分类号： G06F17/30

CPC分类号： G06F17/30171 ,  G06F17/00

摘要： A method for performing I/O operations on a file stored in a file system utilizing a shared data storage system and accessible by a plurality of host computers is disclosed. A host computer receives from a process executing on it, a request to read data stored in the file. The host computer then requests the data stored in the file without acquiring a lock from the file system. The host computer also maintains a timeout value associated with the file while reading the data. The host computer receives at least a portion of the data prior to an expiration of time, and if all the data has not been received before the expiration of time, it then assesses whether another of the host computers has acquired a lock on the file, and, if so, invalidates the received data without providing it to the requesting process.

摘要翻译： 公开了一种利用共享数据存储系统对多个主计算机可访问的文件系统中存储的文件执行I / O操作的方法。 主计算机从其上执行的进程接收到读取存储在文件中的数据的请求。 然后，主计算机请求存储在文件中的数据，而不从文件系统获取锁定。 在读取数据时，主机还维护与文件相关联的超时值。 主计算机在时间到期之前接收数据的至少一部分，并且如果在时间到期之前还没有接收到所有数据，则其随后评估其他主计算机是否已经获取了文件上的锁定， 如果是，则将接收到的数据无效，而不将其提供给请求进程。

公开(公告)号：US20130212577A1

公开(公告)日：2013-08-15

申请号：US13371243

申请日：2012-02-10

申请人： Samdeep NAYAK ,  Satyam B. VAGHANI ,  Rajesh BHAT ,  Vinay GAONKAR ,  Sanjay Vasudev ACHARYA ,  Chiao-Chuan SHIH

发明人： Samdeep NAYAK ,  Satyam B. VAGHANI ,  Rajesh BHAT ,  Vinay GAONKAR ,  Sanjay Vasudev ACHARYA ,  Chiao-Chuan SHIH

IPC分类号： G06F9/455

CPC分类号： H04L67/16 ,  G06F9/45558 ,  G06F2009/45595 ,  H04L67/1097

摘要： Embodiments provide data in-flight services (DIFS) to software applications such as virtual machines (VMs) at an application level without requiring modification to established storage protocols. In exemplary embodiments, a software application is associated with a DIFS policy indicating one or more DIFS services to apply to the software application. Data transmitted by the software application to a destination is tagged based on the DIFS policy associated with the software application and transmitted to the destination.

摘要翻译： 实施例向应用层面的软件应用程序（如虚拟机）提供数据飞行服务（DIFS），无需修改已建立的存储协议。 在示例性实施例中，软件应用与指示应用于软件应用的一个或多个DIFS服务的DIFS策略相关联。 由软件应用程序发送到目的地的数据是根据与软件应用程序相关联的DIFS策略进行标记的，并传送到目的地。

公开(公告)号：US20130054910A1

公开(公告)日：2013-02-28

申请号：US13219919

申请日：2011-08-29

申请人： Satyam B. VAGHANI ,  Komal DESAI ,  Ilia SOKOLINSKI ,  Sanjay ACHARYA ,  Chiao-Chuan SHIH

发明人： Satyam B. VAGHANI ,  Komal DESAI ,  Ilia SOKOLINSKI ,  Sanjay ACHARYA ,  Chiao-Chuan SHIH

IPC分类号： G06F12/16

CPC分类号： G06F3/061 ,  G06F3/065 ,  G06F3/0683

摘要： The storage system exports logical storage volumes that are provisioned as storage objects within logical storage containers. These storage objects are accessed on demand by connected computer systems using standard protocols, such as SCSI and NFS, through logical endpoints for the protocol traffic that are configured in the storage system. A snapshot profile can be separately defined for each of these logical storage volumes, even for those that are within the same storage container. The snapshot profile for a logical storage volume defines whether or not snapshot is enabled for that logical storage volume, the frequency of the snapshot, and the number of snapshots to be retained.

摘要翻译： 存储系统导出在逻辑存储容器中配置为存储对象的逻辑存储卷。 通过使用标准协议（如SCSI和NFS）的连接的计算机系统，可以通过存储系统中配置的协议流量的逻辑端点来访问这些存储对象。 可以为这些逻辑存储卷中的每一个分别定义快照配置文件，即使对于同一存储容器内的那些。 逻辑存储卷的快照配置文件定义是否为该逻辑存储卷启用快照，快照的频率以及要保留的快照数。

公开(公告)号：US20110179082A1

公开(公告)日：2011-07-21

申请号：US13074916

申请日：2011-03-29

申请人： Satyam B. VAGHANI ,  Manjunath RAJASHEKHAR

发明人： Satyam B. VAGHANI ,  Manjunath RAJASHEKHAR

IPC分类号： G06F17/30

CPC分类号： G06F16/1774

摘要： Atomic test and set (ATS) operations are carried out to perform lock operations that allow a node to acquire or release a lock to a resource of a shared file system that is stored in a data storage unit (DSU) and update its liveness information. Each ATS operation includes the step of comparing contents accessed and read through the shared file system and contents stored at a particular logical block number of the DSU. If the two contents match, updates to the contents of the lock or the liveness information are permitted.

摘要翻译： 执行原子测试和设置（ATS）操作以执行允许节点获取或释放对存储在数据存储单元（DSU）中的共享文件系统的资源的锁定并且更新其活动信息的锁定操作。 每个ATS操作包括比较通过共享文件系统访问和读取的内容以及存储在DSU的特定逻辑块号码处的内容的步骤。 如果两个内容匹配，则允许更新锁的内容或活动信息。

公开(公告)号：US20130055248A1

公开(公告)日：2013-02-28

申请号：US13219899

申请日：2011-08-29

申请人： Ilia SOKOLINSKI ,  Chiao-Chuan SHIH ,  Satyam B. VAGHANI ,  Komal DESAI ,  Tejasvi ASWATHANARAYANA

发明人： Ilia SOKOLINSKI ,  Chiao-Chuan SHIH ,  Satyam B. VAGHANI ,  Komal DESAI ,  Tejasvi ASWATHANARAYANA

IPC分类号： G06F9/455 ,  G06F15/16

CPC分类号： G06F3/0608 ,  G06F3/0631 ,  G06F3/0637 ,  G06F3/067 ,  G06F2206/1012 ,  H04L67/1097

摘要： The storage system exports logical storage volumes that are provisioned as storage objects. These storage objects are accessed on demand by connected computer systems using standard protocols, such as SCSI and NFS, through logical endpoints for the protocol traffic that are configured in the storage system. When traffic through a particular protocol endpoint is busy, the logical storage volume undergoes a rebind process pursuant to which the logical storage volume is bound to a new protocol endpoint, and the binding to the old protocol endpoint is removed upon completion of all pending input-output commands issued through the old protocol endpoint.

摘要翻译： 存储系统导出配置为存储对象的逻辑存储卷。 通过使用标准协议（如SCSI和NFS）的连接的计算机系统，可以通过存储系统中配置的协议流量的逻辑端点来访问这些存储对象。 当通过特定协议端点的流量繁忙时，逻辑存储卷经历重新绑定过程，根据该过程，逻辑存储卷被绑定到新的协议端点，并且在完成所有待处理的输入 - 通过旧协议端点发出的输出命令。

公开(公告)号：US20130054888A1

公开(公告)日：2013-02-28

申请号：US13219368

申请日：2011-08-26

申请人： Rajesh BHAT ,  Sanjay ACHARYA ,  Satyam B. VAGHANI ,  Chiao-Chuan SHIH

发明人： Rajesh BHAT ,  Sanjay ACHARYA ,  Satyam B. VAGHANI ,  Chiao-Chuan SHIH

IPC分类号： G06F12/00

CPC分类号： G06F3/0619 ,  G06F3/0604 ,  G06F3/0631 ,  G06F3/0661 ,  G06F3/0665 ,  G06F3/067 ,  G06F3/0689 ,  G06F9/00 ,  H04L29/06 ,  H04L61/103 ,  H04L67/1097

摘要： The storage system exports logical storage volumes that are provisioned as storage objects. These storage objects are accessed on demand by connected computer systems using standard protocols, such as SCSI and NFS, through logical endpoints for the protocol traffic that are configured in the storage system. When an input-output command (IO) is received at the storage system, an identifier is retrieved from the IO and translated into a logical storage volume identifier, and the IO is executed on storage locations referenced by a logical storage volume corresponding to the logical storage volume identifier.

摘要翻译： 存储系统导出配置为存储对象的逻辑存储卷。 通过使用标准协议（如SCSI和NFS）的连接的计算机系统，可以通过存储系统中配置的协议流量的逻辑端点来访问这些存储对象。 当在存储系统处接收到输入 - 输出命令（IO）时，从IO检索标识符并将其翻译成逻辑存储卷标识符，并且在对应于逻辑的逻辑存储卷引用的存储位置上执行IO 存储卷标识符。