发明授权
- 专利标题: Write cache management method and apparatus
- 专利标题(中): 写缓存管理方法和装置
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申请号: US13482314申请日: 2012-05-29
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公开(公告)号: US08886880B2公开(公告)日: 2014-11-11
- 发明人: Michael David Barrell , Zachary David Traut
- 申请人: Michael David Barrell , Zachary David Traut
- 申请人地址: US CO Longmont
- 专利权人: Dot Hill Systems Corporation
- 当前专利权人: Dot Hill Systems Corporation
- 当前专利权人地址: US CO Longmont
- 代理商 Thomas J. Lavan
- 主分类号: G06F12/00
- IPC分类号: G06F12/00 ; G06F12/08 ; G06F11/10
摘要:
A method for destaging data from a memory of a storage controller to a striped volume is provided. The method includes determining if a stripe should be destaged from a write cache of the storage controller to the striped volume, destaging a partial stripe if a full stripe write percentage is less than a full stripe write affinity value, and destaging a full stripe if the full stripe write percentage is greater than the full stripe write affinity value. The full stripe write percentage includes a full stripe count divided by the sum of the full stripe count and a partial stripe count. The full stripe count is the number of stripes in the write cache where all chunks of a stripe are dirty. The partial stripe count is the number of stripes where at least one chunk but less than all chunks of the stripe are dirty.
公开/授权文献
- US20130326149A1 Write Cache Management Method and Apparatus 公开/授权日:2013-12-05