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1. 发明授权

US09116803B1 Placement of virtual machines based on page commonality 有权
标题翻译：基于页面通用性来放置虚拟机
公开(公告)号：US09116803B1
公开(公告)日：2015-08-25
申请号：US13249435
申请日：2011-09-30
申请人： Mukund Agrawal , Anindya Banerjee , Shriram Wankhade , Dilip Madhusudan Ranade
发明人： Mukund Agrawal , Anindya Banerjee , Shriram Wankhade , Dilip Madhusudan Ranade
IPC分类号： G06F9/455 , G06F11/07
CPC分类号： G06F11/0751 , G06F9/45558 , G06F2009/4557 , G06F2009/45583
摘要： Various systems and methods for placing a virtual machine on one of a plurality of candidate physical machines. For example, one method can involve generating a list that comprises entries for a virtual machine. Each entry in the list indicates a portion of data that is associated with the virtual machine. The method then involves calculating a number of common entries between the list and each of a plurality of candidate lists, where a common entry is an entry that is included in the respective candidate list and in the list. Each candidate list is associated with a computing device. In response to detecting which candidate list has the most common entries, the method involves assigning the virtual machine to the computing device associated with that candidate list.
摘要翻译：用于将虚拟机放置在多个候选物理机器中的一个上的各种系统和方法。例如，一种方法可以涉及生成包括虚拟机的条目的列表。列表中的每个条目指示与虚拟机相关联的一部分数据。该方法然后包括计算列表和多个候选列表中的每一个之间的公共条目的数目，其中公共条目是包括在相应的候选列表和列表中的条目。每个候选列表与计算设备相关联。响应于检测哪个候选列表具有最常见的条目，该方法包括将虚拟机分配给与该候选列表相关联的计算设备。

2. 发明授权

US09015417B2 Deduplication-aware page cache 有权
标题翻译：重复数据删除感知页面缓存
公开(公告)号：US09015417B2
公开(公告)日：2015-04-21
申请号：US12969360
申请日：2010-12-15
申请人： Mukund Agrawal , Shriram Wankhade
发明人： Mukund Agrawal , Shriram Wankhade
IPC分类号： G06F12/08 , G06F3/06
CPC分类号： G06F12/0866 , G06F3/0641 , G06F3/065
摘要： An access request that includes a combination of a file identifier and an offset value is received. If the page cache does not contain the page indexed by the combination, then the file system is accessed and the offset value is mapped to a disk location. The file system can access a block map to identify the location. A table (e.g., a shared location table) that includes entries (e.g., locations) for pages that are shared by multiple files is accessed. If the aforementioned disk location is in the table, then the requested page is in the page cache and it is not necessary to add the page to the page cache. Otherwise, the page is added to the page cache.
摘要翻译：接收包括文件标识符和偏移值的组合的访问请求。如果页面缓存不包含由组合索引的页面，则会访问文件系统，并将偏移量值映射到磁盘位置。文件系统可以访问块映射以识别位置。访问包括由多个文件共享的页面的条目（例如，位置）的表（例如，共享位置表）。如果上述磁盘位置在表中，则所请求的页面在页面缓存中，并且不需要将页面添加到页面缓存中。否则，该页面将添加到页面缓存中。

3. 发明申请

US20120159081A1 DEDUPLICATION-AWARE PAGE CACHE 有权
公开(公告)号：US20120159081A1
公开(公告)日：2012-06-21
申请号：US12969360
申请日：2010-12-15
申请人： Mukund Agrawal , Shriram Wankhade
发明人： Mukund Agrawal , Shriram Wankhade
IPC分类号： G06F12/08
CPC分类号： G06F12/0866 , G06F3/0641 , G06F3/065
摘要： An access request that includes a combination of a file identifier and an offset value is received. If the page cache does not contain the page indexed by the combination, then the file system is accessed and the offset value is mapped to a disk location. The file system can access a block map to identify the location. A table (e.g., a shared location table) that includes entries (e.g., locations) for pages that are shared by multiple files is accessed. If the aforementioned disk location is in the table, then the requested page is in the page cache and it is not necessary to add the page to the page cache. Otherwise, the page is added to the page cache.
摘要翻译：接收包括文件标识符和偏移值的组合的访问请求。如果页面缓存不包含由组合索引的页面，则会访问文件系统，并将偏移量值映射到磁盘位置。文件系统可以访问块映射以识别位置。访问包括由多个文件共享的页面的条目（例如，位置）的表（例如，共享位置表）。如果上述磁盘位置在表中，则所请求的页面在页面缓存中，并且不需要将页面添加到页面缓存中。否则，该页面将添加到页面缓存中。

4. 发明授权

US09141808B1 Data loss prevention 有权
标题翻译：数据丢失预防
公开(公告)号：US09141808B1
公开(公告)日：2015-09-22
申请号：US12916193
申请日：2010-10-29
申请人： Mukund Agrawal , Sumit Kumar , Anindya Banerjee , Anirban Mukherjee , Niranjan Pendharkar
发明人： Mukund Agrawal , Sumit Kumar , Anindya Banerjee , Anirban Mukherjee , Niranjan Pendharkar
IPC分类号： G06F21/60
CPC分类号： G06F21/60 , G06F21/6281 , G06F2221/2141 , H04L63/10
摘要： Data loss prevention systems and methods begin protecting data upon the creation of the data. One such method involves detecting a file system operation targeting data on a storage device. The file system operation creates or modifies the data or a set of permissions associated with the data. In response to detecting the file system operation, the method prevents unauthorized access to the data. The method begins preventing unauthorized access after the detection of the file system operation and before any subsequent read access to the data via the file system.
摘要翻译：数据丢失防护系统和方法在创建数据时开始保护数据。一种这样的方法涉及检测在存储设备上定位数据的文件系统操作。文件系统操作创建或修改与数据相关联的数据或一组权限。响应于检测到文件系统操作，该方法防止未经授权的访问数据。该方法开始防止在检测到文件系统操作之后以及在通过文件系统对数据进行任何后续读取访问之前的未经授权的访问。

5. 发明申请

US20120072393A1 SELECTIVE VIRTUAL MACHINE IMAGE REPLICATION SYSTEMS AND METHODS 有权
标题翻译：选择性虚拟机图像复制系统和方法
公开(公告)号：US20120072393A1
公开(公告)日：2012-03-22
申请号：US12887360
申请日：2010-09-21
申请人： Sanjay Kumar , Mukund Agrawal , Niranjan Pendharkar , Sumit Kumar , Subash Rajaa
发明人： Sanjay Kumar , Mukund Agrawal , Niranjan Pendharkar , Sumit Kumar , Subash Rajaa
IPC分类号： G06F17/30
CPC分类号： G06F17/30174
摘要： Systems and methods for fault handling are presented. In one embodiment, a fault handling method includes: performing an information collection process, wherein the information collection process includes collecting information regarding guest operating system files of a virtual machine; performing a selective replication region identification process, wherein the selective replication region identification process includes identifying regions associated with a selective amount of the guest operating system files; and performing a replication process based upon result of the replication region identification process. In one embodiment, the selective replication region identification process includes identifying regions associated with files of interest. The selective replication region identification process can include identifying regions associated with temporary files. The information regarding files can include a list of regions used by the files after loopback mounting of a virtual disk file, a list of regions which have been modified on the virtual disk file and regions associated with metadata that has changed.
摘要翻译：介绍了故障处理的系统和方法。在一个实施例中，故障处理方法包括：执行信息收集过程，其中所述信息收集过程包括收集关于虚拟机的客户操作系统文件的信息; 执行选择性复制区域识别过程，其中所述选择性复制区域识别过程包括识别与所述客户操作系统文件的选择量相关联的区域; 并且基于复制区域识别过程的结果执行复制过程。在一个实施例中，选择性复制区域识别过程包括识别与感兴趣文件相关联的区域。选择性复制区域识别过程可以包括识别与临时文件相关联的区域。关于文件的信息可以包括在环回安装虚拟磁盘文件之后由文件使用的区域的列表，在虚拟磁盘文件上已被修改的区域的列表以及与已经改变的元数据相关联的区域。

6. 发明申请

US20110225129A1 METHOD AND SYSTEM TO SCAN DATA FROM A SYSTEM THAT SUPPORTS DEDUPLICATION 有权
标题翻译：从支持重复的系统扫描数据的方法和系统
公开(公告)号：US20110225129A1
公开(公告)日：2011-09-15
申请号：US12724235
申请日：2010-03-15
申请人： Mukund Agrawal
发明人： Mukund Agrawal
IPC分类号： G06F17/30
CPC分类号： G06F17/30156
摘要： An interface is disclosed that makes information obtained from a file deduplication process available to an application for the efficient operation thereof. A data deduplication repository is scanned to determine a plurality of file segments and respective checksum values associated with the segments. A data structure is generated that allows shared segments to be identified by indexing using a common checksum value. The segments also indicate the file to which they belong and may also include a timestamp value. This data structure is updated as files are modified, etc. The data structure is accessible to an application program so that the application program can readily determine which segments are shared between multiple files. With this information, the application can efficiently process the segment once rather than multiple times. Timestamps can be used by the application to efficiently identify only those segments that were accessed after a given time.
摘要翻译：公开了一种使得从文件重复数据消除处理获得的信息可用于应用程序以进行有效操作的接口。扫描重复数据删除存储库以确定与段相关联的多个文件段和相应的校验和值。生成数据结构，其允许通过使用公共校验和值进行索引来识别共享段。这些段还指示它们所属的文件，并且还可以包括时间戳值。该数据结构在文件被修改等的情况下更新。应用程序可访问数据结构，以便应用程序可以容易地确定哪些段在多个文件之间共享。利用这些信息，应用程序可以有效地处理段，而不是多次。应用程序可以使用时间戳来有效地识别在给定时间之后访问的段。

7. 发明授权

US07853571B2 Techniques for file system recovery 有权
标题翻译：文件系统恢复技术
公开(公告)号：US07853571B2
公开(公告)日：2010-12-14
申请号：US11864028
申请日：2007-09-28
申请人： Dilip Ranade , Aalop Shah , Nagaprabhanjan Bellari , Mukund Agrawal
发明人： Dilip Ranade , Aalop Shah , Nagaprabhanjan Bellari , Mukund Agrawal
IPC分类号： G06F7/00 , G06F17/00
CPC分类号： G06F11/1458 , G06F9/466 , G06F11/1435 , G06F11/1471 , G06F11/1474
摘要： Techniques for file system recovery are disclosed. In one particular exemplary embodiment, the techniques may be realized as a method for file system recovery comprising starting a recovery process for a failed node, utilizing the recovery process to read one or more committed but un-applied transactions from storage associated with the failed node, and recreating the one or more committed but un-applied transactions in memory associated with the recovery process.
摘要翻译：公开文件系统恢复技术。在一个特定的示例性实施例中，这些技术可以被实现为用于文件系统恢复的方法，包括启动故障节点的恢复过程，利用恢复过程从与故障节点相关联的存储器读取一个或多个已提交但未应用的事务，并在与恢复过程相关联的存储器中重新创建一个或多个已提交但未应用的事务。

8. 发明授权

US09165012B2 Periodic file system checkpoint manager 有权
标题翻译：定期文件系统检查点管理员
公开(公告)号：US09165012B2
公开(公告)日：2015-10-20
申请号：US12633693
申请日：2009-12-08
申请人： Mukund Agrawal , Sumit Kumar , Niranjan Pendharkar , Feng Wang
发明人： Mukund Agrawal , Sumit Kumar , Niranjan Pendharkar , Feng Wang
IPC分类号： G06F7/00 , G06F17/00 , G06F17/30 , G06F11/14
CPC分类号： G06F17/30194 , G06F11/1407 , G06F11/1446 , G06F11/1464 , G06F17/30073
摘要： A periodic checkpoint method for a file system replication source. The method comprises generating a first checkpoint at a first time on a file system replication source and identifying a set of data objects from the replication source that have been modified during a time period between the first time and a subsequent second time. A periodic checkpoint is then generated at the second time on the file system replication source by using the set of data objects.
摘要翻译：用于文件系统复制源的定期检查点方法。该方法包括在文件系统复制源上首次生成第一检查点，并且从第一时间到随后的第二时间之间的时间段中识别来自复制源的数据对象集合，该数据对象已被修改。然后通过使用一组数据对象，在文件系统复制源上第二次生成定期检查点。

9. 发明授权

US08484160B2 Selective virtual machine image replication systems and methods 有权
标题翻译：选择性虚拟机映像复制系统和方法
公开(公告)号：US08484160B2
公开(公告)日：2013-07-09
申请号：US12887360
申请日：2010-09-21
申请人： Sanjay Kumar , Mukund Agrawal , Niranjan Pendharkar , Sumit Kumar , Subash Rajaa
发明人： Sanjay Kumar , Mukund Agrawal , Niranjan Pendharkar , Sumit Kumar , Subash Rajaa
IPC分类号： G06F7/00 , G06F17/00
CPC分类号： G06F17/30174
摘要： Systems and methods for fault handling are presented. In one embodiment, a fault handling method includes: performing an information collection process, wherein the information collection process includes collecting information regarding guest operating system files of a virtual machine; performing a selective replication region identification process, wherein the selective replication region identification process includes identifying regions associated with a selective amount of the guest operating system files; and performing a replication process based upon result of the replication region identification process. In one embodiment, the selective replication region identification process includes identifying regions associated with files of interest. The selective replication region identification process can include identifying regions associated with temporary files. The information regarding files can include a list of regions used by the files after loopback mounting of a virtual disk file, a list of regions which have been modified on the virtual disk file and regions associated with metadata that has changed.
摘要翻译：介绍了故障处理的系统和方法。在一个实施例中，故障处理方法包括：执行信息收集过程，其中所述信息收集过程包括收集关于虚拟机的客户操作系统文件的信息; 执行选择性复制区域识别过程，其中所述选择性复制区域识别过程包括识别与所述客户操作系统文件的选择量相关联的区域; 并且基于复制区域识别过程的结果执行复制过程。在一个实施例中，选择性复制区域识别过程包括识别与感兴趣文件相关联的区域。选择性复制区域识别过程可以包括识别与临时文件相关联的区域。关于文件的信息可以包括在环回安装虚拟磁盘文件之后由文件使用的区域的列表，在虚拟磁盘文件上已被修改的区域的列表以及与已经改变的元数据相关联的区域。

10. 发明申请

US20110145207A1 SCALABLE DE-DUPLICATION FOR STORAGE SYSTEMS 有权
标题翻译：适用于存储系统的可重用失真
公开(公告)号：US20110145207A1
公开(公告)日：2011-06-16
申请号：US12638907
申请日：2009-12-15
申请人： Mukund Agrawal , Srineet Sridharan
发明人： Mukund Agrawal , Srineet Sridharan
IPC分类号： G06F17/30
CPC分类号： G06F17/30159 , G06F17/30156
摘要： A method for performing storage system de-duplication. The method includes accessing a plurality of initial partitions of files of a storage system and performing a de-duplication on each of the initial partitions. For each duplicate found, an indicator comprising the metadata that is similar across said each duplicate is determined. For each indicator, indicators are determined that infer a likelihood that data objects with said indicators contain duplicate data is high. Optimized partitions are generated in accordance with the chosen indicators. A de-duplication process is subsequently performed on each of the optimized partitions.
摘要翻译：一种用于执行存储系统重复数据删除的方法。该方法包括访问存储系统的多个文件的初始分区并在每个初始分区上执行重复数据删除。对于找到的每个重复，确定包括在所述每个副本中相似的元数据的指示符。对于每个指标，确定指标，推断出具有所述指标的数据对象包含重复数据的可能性较高。根据所选指标生成优化分区。随后在每个优化分区上执行重复数据删除处理。

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