公开(公告)号：US09063883B2

公开(公告)日：2015-06-23

申请号：US13245502

申请日：2011-09-26

申请人： Theresa M. Brown ,  Ellen Joanne Grusy ,  Lokesh M. Gupta ,  Brian D. Hatfield ,  Kurt A. Lovrien ,  Carol S. Mellgren ,  Raul E. Saba

发明人： Theresa M. Brown ,  Ellen Joanne Grusy ,  Lokesh M. Gupta ,  Brian D. Hatfield ,  Kurt A. Lovrien ,  Carol S. Mellgren ,  Raul E. Saba

IPC分类号： G06F12/08 ,  G06F12/12 ,  G06F3/06 ,  G06F11/14

CPC分类号： G06F12/023 ,  G06F3/0608 ,  G06F3/0611 ,  G06F3/0631 ,  G06F3/0644 ,  G06F3/065 ,  G06F3/0652 ,  G06F3/0656 ,  G06F3/0664 ,  G06F3/0665 ,  G06F3/0673 ,  G06F11/1458 ,  G06F12/0802 ,  G06F12/12 ,  G06F2003/0691 ,  G06F2003/0692 ,  G06F2003/0698 ,  G06F2212/1024 ,  G06F2212/1044 ,  G06F2212/281 ,  G06F2212/312 ,  G06F2212/70

摘要： A storage controller receives a request to establish a point-in-time copy operation by placing a space efficient source volume in a point-in-time copy relationship with a space efficient target volume, wherein subsequent to being established the point-in-time copy operation is configurable to consistently copy the space efficient source volume to the space efficient target volume at a point in time. A determination is made as to whether any track of an extent is staging into a cache from the space efficient target volume or destaging from the cache to the space efficient target volume. In response to a determination that at least one track of the extent is staging into the cache from the space efficient target volume or destaging from the cache to the space efficient target volume, release of the extent from the space efficient target volume is avoided.

摘要翻译： 存储控制器通过将空间有效的源卷放置在与空间有效的目标卷的时间点复制关系中来接收建立时间点复制操作的请求，其中在建立时间点之后的时间点 复制操作可配置为在某个时间点将空间有效的源卷始终复制到空间有效的目标卷。 确定范围的任何轨迹是否从空间有效的目标卷进入高速缓存，或者从缓存降级到空间有效的目标卷。 响应于确定范围的至少一个轨道从空间有效的目标卷进入高速缓存或从缓存降级到空间有效的目标卷，避免了从空间有效的目标卷的释放。

公开(公告)号：US20130080704A1

公开(公告)日：2013-03-28

申请号：US13245502

申请日：2011-09-26

申请人： Theresa M. Brown ,  Ellen Joanne Grusy ,  Lokesh M. Gupta ,  Brian D. Hatfield ,  Kurt A. Lovrien ,  Carol S. Mellgren ,  Raul E. Saba

发明人： Theresa M. Brown ,  Ellen Joanne Grusy ,  Lokesh M. Gupta ,  Brian D. Hatfield ,  Kurt A. Lovrien ,  Carol S. Mellgren ,  Raul E. Saba

IPC分类号： G06F12/08

CPC分类号： G06F12/023 ,  G06F3/0608 ,  G06F3/0611 ,  G06F3/0631 ,  G06F3/0644 ,  G06F3/065 ,  G06F3/0652 ,  G06F3/0656 ,  G06F3/0664 ,  G06F3/0665 ,  G06F3/0673 ,  G06F11/1458 ,  G06F12/0802 ,  G06F12/12 ,  G06F2003/0691 ,  G06F2003/0692 ,  G06F2003/0698 ,  G06F2212/1024 ,  G06F2212/1044 ,  G06F2212/281 ,  G06F2212/312 ,  G06F2212/70

摘要： A storage controller receives a request to establish a point-in-time copy operation by placing a space efficient source volume in a point-in-time copy relationship with a space efficient target volume, wherein subsequent to being established the point-in-time copy operation is configurable to consistently copy the space efficient source volume to the space efficient target volume at a point in time. A determination is made as to whether any track of an extent is staging into a cache from the space efficient target volume or destaging from the cache to the space efficient target volume. In response to a determination that at least one track of the extent is staging into the cache from the space efficient target volume or destaging from the cache to the space efficient target volume, release of the extent from the space efficient target volume is avoided.