发明授权
- 专利标题： Recording medium storing allocation control program, allocation control apparatus, and allocation control method
- 专利标题（中）： 记录介质存储分配控制程序，分配控制装置和分配控制方法
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申请号： US12651522申请日： 2010-01-04
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公开(公告)号： US08230191B2公开(公告)日： 2012-07-24
- 发明人: Yasuo Noguchi , Kazutaka Ogihara , Masahisa Tamura , Yoshihiro Tsuchiya , Tetsutaro Maruyama , Takashi Watanabe , Tatsuo Kumano , Kazuichi Oe
- 申请人： Yasuo Noguchi , Kazutaka Ogihara , Masahisa Tamura , Yoshihiro Tsuchiya , Tetsutaro Maruyama , Takashi Watanabe , Tatsuo Kumano , Kazuichi Oe
- 申请人地址： JP Kawasaki
- 专利权人： Fujitsu Limited
- 当前专利权人： Fujitsu Limited
- 当前专利权人地址： JP Kawasaki
- 代理机构： Staas & Halsey LLP
- 优先权： JP2009-015470 20090127
- 主分类号： G06F12/02
- IPC分类号： G06F12/02 ; G06F17/30
摘要：
An allocation control apparatus allocates duplicate logical volume divided areas to virtual storage areas that do not have data storage area in the physical storage area. The apparatus associates identification information of the allocated virtual storage areas, of the duplicate logical volume divided areas, and of duplication source logical volume divided areas to be set in the management information. The apparatus detects, upon a data writing request, based on the management information, the unallocated real storage area in the logical volume divided area. The apparatus reallocates the real storage area to the duplicate logical volume divided area to update the management information. The apparatus identifies, based on the management information, the real storage area allocated to the duplication source logical volume divided area corresponding to the duplicate logical volume divided area. The apparatus copies data stored in the real storage area to the real storage area.
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