公开(公告)号：US09747298B2

公开(公告)日：2017-08-29

申请号：US14268698

申请日：2014-05-02

Applicant: VMware, Inc.

Inventor： Sambasiva Rao Bandarupalli ,  Krishna Yadappanavar ,  Anjaneya Prasad Gondi ,  Kiran Kumar Thota

IPC: G06F17/30 ,  G06F12/02

CPC classification number: G06F17/30185 ,  G06F12/0269 ,  G06F17/30138 ,  G06F17/30144 ,  G06F17/3051 ,  G06F17/30864 ,  G06F2212/702

Abstract: Exemplary methods, apparatuses, and systems receive a command to overwrite or delete data stored within an allocated portion of a file system. In response to the command, an entry is added to a first data structure. A write command is received. The portion of the file system added to the first data structure is formatted for reallocation. In performance of the write command, the portion of the file system is reallocated. Portions of the file system are allocated from a second data structure when the second data structure includes a sufficient amount of space to satisfy the write command and from the first data structure when the second data structure does not include a sufficient amount of space. The second data structure includes free portions of the file system that have been formatted for allocation. The first data structure includes free portions that have yet to be formatted.

公开(公告)号：US20150317326A1

公开(公告)日：2015-11-05

申请号：US14268698

申请日：2014-05-02

Applicant: VMware, Inc.

Inventor： Sambasiva Rao Bandarupalli ,  Krishna Yadappanavar ,  Anjaneya Prasad Gondi ,  Kiran Kumar Thota

IPC: G06F17/30 ,  G06F12/02

CPC classification number: G06F17/30185 ,  G06F12/0269 ,  G06F17/30138 ,  G06F17/30144 ,  G06F17/3051 ,  G06F17/30864 ,  G06F2212/702

Abstract: Exemplary methods, apparatuses, and systems receive a command to overwrite or delete data stored within an allocated portion of a file system. In response to the command, an entry is added to a first data structure. A write command is received. The portion of the file system added to the first data structure is formatted for reallocation. In performance of the write command, the portion of the file system is reallocated. Portions of the file system are allocated from a second data structure when the second data structure includes a sufficient amount of space to satisfy the write command and from the first data structure when the second data structure does not include a sufficient amount of space. The second data structure includes free portions of the file system that have been formatted for allocation. The first data structure includes free portions that have yet to be formatted.

Abstract translation: 示例性方法，装置和系统接收到覆盖或删除存储在文件系统的分配部分内的数据的命令。 响应于该命令，将条目添加到第一数据结构。 接收到写命令。 添加到第一个数据结构的文件系统的部分被格式化为重新分配。 在执行write命令时，文件系统的一部分被重新分配。 当第二数据结构包括足够的空间以满足写命令时，以及当第二数据结构不包括足够的空间时，从第二数据结构分配文件系统的部分。 第二数据结构包括文件系统的已分配格式的空闲部分。 第一个数据结构包括尚未格式化的空闲部分。