| 发明名称 |
OPTIMIZATION OF THE COPYING OF CHANGE RECORDED DATA BY USING SPARE FLASH CAPACITY |
| 摘要 |
A command is received to copy a first extent in a source volume to a second extent in a target volume, wherein the source volume and the target volume are in a copy relationship. In response to determining that it takes longer to copy all changed data of the first extent to the second extent than to copy all of the changed data of the first extent to a third extent and to copy all other data from the second extent to the third extent, operations are performed to copy all of the changed data of from the first extent to the third extent and to copy all of the other data from the second extent to the third extent. Operations are also performed to assign the third extent to replace the second extent in the target volume. |
| 申请公布号 |
US2016266806(A1) |
申请公布日期 |
2016.09.15 |
| 申请号 |
US201514643840 |
申请日期 |
2015.03.10 |
| 申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
CRAWFORD JOSHUA J.;JENNAS, II PAUL A.;PEIPELMAN JASON L.;WARD MATTHEW J. |
| 分类号 |
G06F3/06 |
主分类号 |
G06F3/06 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A method, comprising:
receiving, a command to copy a first extent in a source volume to a second extent in a target volume, wherein the source volume and the target volume are in a copy relationship; and in response to determining that it takes longer to copy all changed data of the first extent to the second extent than to copy all of the changed data of the first extent to a third extent and to copy all other data from the second extent to the third extent, performing:
copying all of the changed data of from the first extent to the third extent;copying all of the other data from the second extent to the third extent; andassigning the third extent to replace the second extent in the target volume. |
| 地址 |
ARMONK NY US |
