发明名称 |
MANAGEMENT OF EXTENT BASED METADATA WITH DENSE TREE STRUCTURES WITHIN A DISTRIBUTED STORAGE ARCHITECTURE |
摘要 |
In one embodiment, a node coupled to one or more storage devices executes a storage input/output (I/O) stack having a volume layer. The volume layer manages volume metadata embodied as mappings from offsets of a logical unit (LUN) to extent keys associated with storage locations for extents on the one or more storage devices. Volume metadata is maintained as a dense tree metadata structure representing successive points in time. The dense tree metadata structure has multiple levels, wherein a top level of the dense tree metadata structure represents newer volume metadata changes and descending levels of the dense tree metadata structure represent older volume metadata changes. The node accesses a latest version of changes to the volume metadata by searching from the top level to the descending levels in the dense tree metadata structure. |
申请公布号 |
WO2015038741(A1) |
申请公布日期 |
2015.03.19 |
申请号 |
WO2014US55138 |
申请日期 |
2014.09.11 |
申请人 |
NETAPP, INC. |
发明人 |
ZHENG, LING;LEWIS, BLAKE H.;PATEL, KAYURI H. |
分类号 |
G06F3/06 |
主分类号 |
G06F3/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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