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1. 发明申请

US20090138656A1 Method of skipping synchronization process for initialization of RAID1 device 审中-公开
标题翻译：跳过RAID1设备初始化的同步过程的方法
公开(公告)号：US20090138656A1
公开(公告)日：2009-05-28
申请号：US11984966
申请日：2007-11-26
申请人： Zhun Liu , Jian-Zhong Wang , Tom Chen , Win-Harn Liu
发明人： Zhun Liu , Jian-Zhong Wang , Tom Chen , Win-Harn Liu
IPC分类号： G06F12/00
CPC分类号： G06F11/2087 , G06F11/2066
摘要： A method for skipping an initialization process of synchronization of an RAID 1 device skips synchronization process of the RAID1 device through a bitmap technique. First, an RAID1 device is established, a space of the same size is divided from each member disk of the RAID1 device for storing a bitmap corresponding to each data block on each member disk. When a read/write operation is executed on the RAID1 device, before the bit value in the bitmap corresponding to the data block is read, whether the bitmap exists or not is determined first, then corresponding operation is executed according to the bit value in the bitmap corresponding to data block requesting the read/write operation. The method skips synchronization process of the RAID 1 device during the initial establishment, thereby largely saving the time required by the synchronization process for initialization, and further improving the overall performance of the RAID1 device.
摘要翻译：用于跳过RAID 1设备的同步初始化处理的方法通过位图技术跳过RAID1设备的同步过程。首先，建立RAID1设备，将与RAID1设备的每个成员磁盘划分相同大小的空间，用于存储与每个成员磁盘上的每个数据块相对应的位图。当在RAID1设备上执行读/写操作时，在读取与数据块相对应的位图中的位值之前，首先确定位图是否存在，然后根据位置值中的位值执行相应的操作位图对应于请求读/写操作的数据块。该方法在初始建立过程中跳过RAID 1设备的同步过程，从而大大节省了初始化同步过程所需的时间，进一步提高了RAID1设备的整体性能。

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