首页> 外国专利> Upper deck file system shrink for directly and thinly provisioned lower deck file system in which upper deck file system is stored in a volume file within lower deck file system where both upper deck file system and lower deck file system resides in storage processor memory

Upper deck file system shrink for directly and thinly provisioned lower deck file system in which upper deck file system is stored in a volume file within lower deck file system where both upper deck file system and lower deck file system resides in storage processor memory

机译：上层文件系统缩小以直接配置和精简配置的下层文件系统，其中上层文件系统存储在下层文件系统内的卷文件中，上层文件系统和下层文件系统都驻留在存储处理器内存中

页面导航

摘要
著录项
相似文献

摘要

An improved technique involves providing file system shrink capability by shrinking the size of the volume file in which an upper deck file system is stored. Along these lines, a data storage system, upon receiving a request to shrink an upper deck file system, determines a new address in the upper deck file system, based on an amount the upper deck file system is to be shrunk, to which the end-of-file (EOF) pointer of the volume file will point. The new address will have a smaller distance from the address of the file pointer than the original address to which the EOF pointer points. The data storage system then identifies nonempty data blocks of the upper deck file system that have logical addresses having a larger distance from the address of the file pointer than the second logical address.

机译：一种改进的技术涉及通过缩小存储上层文件系统的卷文件的大小来提供文件系统缩小功能。沿着这些思路，数据存储系统在收到收缩上层文件系统的请求后，根据上层文件系统将要收缩的数量，确定上层文件系统中的新地址，最后卷文件的文件名（EOF）指针将指向。新地址到文件指针地址的距离将小于EOF指针指向的原始地址。然后，数据存储系统识别上层文件系统的非空数据块，该非空数据块的逻辑地址与文件指针的地址的距离比第二逻辑地址的距离大。

著录项

公开/公告号US10013217B1

专利类型
公开/公告日2018-07-03

原文格式PDF
申请/专利权人 EMC CORPORATION;
展开▼

申请/专利号US201313929879
发明设计人 JEAN-PIERRE BONO;WILLIAM C. DAVENPORT;MILES A. DE FOREST;WALTER C. FORRESTER;MICHAL MARKO;ALEXANDER MATHEWS;
展开▼

申请日2013-06-28
分类号G06F3/06;
国家 US
入库时间 2022-08-21 13:04:47

相似文献

专利
外文文献
中文文献