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    • 3. 发明授权
    • System and method for network file system server replication using reverse path lookup
    • 使用反向路径查找的网络文件系统服务器复制的系统和方法
    • US08301597B1
    • 2012-10-30
    • US13234532
    • 2011-09-16
    • Dongmei ZhouGuoxian ShangBaojian Chang
    • Dongmei ZhouGuoxian ShangBaojian Chang
    • G06F17/00
    • G06F17/302G06F17/30212
    • The system and method described herein may use reverse path lookup to build mappings between file handles that represent network file system objects and full path names associated therewith and distinguish hard links between different file system objects having the same identifier with different parents or file names. The mappings and information distinguishing the hard links may then be cached to enable replicating changes to the file system. For example, a server may search the cached information using a file handle associated with a changed file system object to obtain the file name and full path name associated therewith. The server may then send the file name and full path name and metadata describing how the file system object was changed to a replica host, which may then replicate the change to the file system object.
    • 本文描述的系统和方法可以使用反向路径查找来构建表示网络文件系统对象的文件句柄和与之相关联的完整路径名之间的映射,并且区分具有相同标识符的不同文件系统对象与不同父节点或文件名之间的硬链接。 然后,可以缓存区分硬链接的映射和信息,以便能够对文件系统进行复制更改。 例如,服务器可以使用与改变的文件系统对象相关联的文件句柄来搜索缓存的信息,以获得与之相关联的文件名和完整路径名。 然后,服务器可以发送文件名称和完整路径名称以及描述文件系统对象如何更改为副本主机的元数据,然后可以将更改复制到文件系统对象。
    • 5. 发明授权
    • Block level data replication
    • 块级数据复制
    • US08924354B2
    • 2014-12-30
    • US13018934
    • 2011-02-01
    • Hector WangHaiyang ZhangShaorong LiGuoxian Shang
    • Hector WangHaiyang ZhangShaorong LiGuoxian Shang
    • G06F7/00G06F17/00G06F11/14
    • G06F11/1464G06F11/2038G06F11/2048G06F11/2097
    • Systems and methods for replicating data from a production server to a backup server include identifying one or more data blocks of a file that were modified after a first time instant and before a second time instant. The file may be associated with a protected directory of the production server. An representative data block (e.g., including a hash value) for at least one of the identified data blocks may be computed using a cryptography algorithm, e.g., MD5 or SHA-1. The computed cryptographic data block representing the identified data block may then be sent for replication to the backup server. An operation performed between the first time instant and the second time instant on one or more files of the protected directory may be recorded, and sent to the backup server.
    • 用于将数据从生产服务器复制到备份服务器的系统和方法包括识别在第一时刻之后和在第二时刻之前被修改的文件的一个或多个数据块。 文件可能与生产服务器的受保护目录相关联。 可以使用密码算法(例如,MD5或SHA-1)来计算针对所识别的数据块中的至少一个的代表性数据块(例如,包括哈希值)。 然后可以发送表示所识别的数据块的所计算的加密数据块,以便复制到备份服务器。 可以记录在受保护目录的一个或多个文件上的第一时刻和第二时刻之间执行的操作,并将其发送到备份服务器。
    • 7. 发明申请
    • BLOCK LEVEL DATA REPLICATION
    • 块级数据复制
    • US20120197844A1
    • 2012-08-02
    • US13018934
    • 2011-02-01
    • Hector WangHaiyang ZhangShaorong LiGuoxian Shang
    • Hector WangHaiyang ZhangShaorong LiGuoxian Shang
    • G06F17/30
    • G06F11/1464G06F11/2038G06F11/2048G06F11/2097
    • Systems and methods for replicating data from a production server to a backup server include identifying one or more data blocks of a file that were modified after a first time instant and before a second time instant. The file may be associated with a protected directory of the production server. An representative data block (e.g., including a hash value) for at least one of the identified data blocks may be computed using a cryptography algorithm, e.g., MD5 or SHA-1. The computed cryptographic data block representing the identified data block may then be sent for replication to the backup server. An operation performed between the first time instant and the second time instant on one or more files of the protected directory may be recorded, and sent to the backup server.
    • 用于将数据从生产服务器复制到备份服务器的系统和方法包括识别在第一时刻之后和在第二时刻之前被修改的文件的一个或多个数据块。 文件可能与生产服务器的受保护目录相关联。 可以使用密码算法(例如,MD5或SHA-1)来计算针对所识别的数据块中的至少一个的代表性数据块(例如,包括哈希值)。 然后,可以发送表示所识别的数据块的计算的加密数据块,以便复制到备份服务器。 可以记录在受保护目录的一个或多个文件上的第一时刻和第二时刻之间执行的操作,并将其发送到备份服务器。