公开(公告)号：US20050108296A1

公开(公告)日：2005-05-19

申请号：US10834837

申请日：2004-04-30

申请人： Takaki Nakamura ,  Kenzo Moriyama ,  Toshiaki Mori

发明人： Takaki Nakamura ,  Kenzo Moriyama ,  Toshiaki Mori

IPC分类号： G06F12/00 ,  G06F12/02 ,  G06F17/30

CPC分类号： G06F12/023 ,  G06F16/1724

摘要： In a file system capable of reserving a storage area, disk fragments can be prevented and an insufficient file system area is hard to occur. A response time of writing a small size file can be shortened. When a file is written, a file size is compared with a plurality of preset threshold values and reservation is executed at a reservation size corresponding to the file size. If the reservation is failed due to an insufficient file system capacity, the reservation is again executed at an actual I/O size to effectively use the file system area. If the file size does not reach the preset smallest threshold value, the reservation is again executed at the actual I/O size and the reservation release process for the file equal to or smaller than the smallest threshold value is skipped.

摘要翻译： 在能够保留存储区域的文件系统中，可以防止磁盘碎片，并且难以发生不足的文件系统区域。 可以缩短编写小尺寸文件的响应时间。 当写入文件时，将文件大小与多个预设阈值进行比较，并且以对应于文件大小的预留大小执行预约。 如果由于文件系统容量不足而导致预约失败，则以实际的I / O大小再次执行预留，以有效地使用文件系统区域。 如果文件大小未达到预设的最小阈值，则按照实际I / O大小再次执行预约，并跳过等于或小于最小阈值的文件的预约释放处理。