公开(公告)号：US08037345B1

公开(公告)日：2011-10-11

申请号：US12752031

申请日：2010-03-31

申请人： Sairam Iyer ,  Rahul Bhagwat ,  Ajay Potnis ,  Amit Dharmadhikari ,  Miles A. DeForest ,  Dixit Patel

发明人： Sairam Iyer ,  Rahul Bhagwat ,  Ajay Potnis ,  Amit Dharmadhikari ,  Miles A. DeForest ,  Dixit Patel

IPC分类号： G06F11/00

CPC分类号： G06F11/1435 ,  G06F11/1004 ,  G06F11/186 ,  G06F11/2094 ,  G06F17/30203

摘要： A file server architecture decouples logical storage from physical storage and provides proactive detection and containment of faults, errors, and corruptions in a file system, in order to enable in place (online) and non-intrusive recovery. The file system is built upon a thinly provisioned logical volume, and there are stored three copies of the metadata defining the logical volume in order to provide quick, deterministic, and reliable recovery from a faulted system. A first copy of the metadata is distributed among all of the slices of physical storage allocated to the logical volume. A second copy of the metadata is stored in a root slice of the logical volume. A third copy of the metadata is stored separate from the slices of physical storage allocated to the logical volume.

摘要翻译： 文件服务器架构将逻辑存储与物理存储分离，并提供主动检测和控制文件系统中的故障，错误和损坏，以实现（在线）和非侵入性恢复。 文件系统基于精简配置的逻辑卷构建，并且存储了定义逻辑卷的元数据的三个副本，以便从故障系统提供快速，确定性和可靠的恢复。 元数据的第一副本被分配到分配给逻辑卷的物理存储器的所有片之间。 元数据的第二个副本存储在逻辑卷的根切片中。 元数据的第三个副本与分配给逻辑卷的物理存储的分片分开存储。