公开(公告)号：US07882386B1

公开(公告)日：2011-02-01

申请号：US12052907

申请日：2008-03-21

申请人： Ajay S. Potnis ,  Jean-Pierre Bono ,  Sairam Veeraswamy ,  Rahul Bhagwat

发明人： Ajay S. Potnis ,  Jean-Pierre Bono ,  Sairam Veeraswamy ,  Rahul Bhagwat

IPC分类号： G06F11/00

CPC分类号： G06F11/1435 ,  G06F11/1008

摘要： This invention is a system and a method for recovering and repairing a logical volume in a data storage environment using a new architecture. The method of recovering a logical volume enables mounting of a file system by instantiating only a single slice under the sparse volume and instantiating rest of the slices provisioned under the sparse volume in background by a asynchronous recovery process or on-demand by the clients of the file system issuing an I/O on the slice volume. The method of repairing a logical volume provides the ability to regenerate the metadata required to reconstruct the corrupted volume.

摘要翻译： 本发明是一种使用新架构在数据存储环境中恢复和修复逻辑卷的系统和方法。 恢复逻辑卷的方法允许通过在稀疏卷下仅实例化单个切片并且在后台通过异步恢复过程或根据需要由客户端根据需要实例化在稀疏卷下提供的切片的其余部分来安装文件系统 文件系统在片卷上发出I / O。 修复逻辑卷的方法提供了重新生成重建损坏卷所需的元数据的能力。

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。