Shifting a defrag operation in a mirrored system
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United States of America Patent
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Aug 15, 2017
Issued Date -
N/A
app pub date -
Jan 19, 2017
filing date -
Jun 28, 2015
priority date (Note) -
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Abstract
A computer system for defragmenting volumes in a mirrored system is provided. The computer system includes program instructions for suspending one or more updates from being mirrored from a first set of tracks on a first server to a second set of tracks on a second server. A defragmenting process is performed on the second server. The defragmentation process stores a before and after mapping of the second set of tracks, wherein the before and after mapping includes information identifying at least one track of the second set of tracks and a corresponding first location of the respective track before the defragmenting and a second location of the respective track after the defragmenting. The computer system further includes program instructions for, upon defragmenting, relocating at least one track of the first set of tracks on the first server according to the stored before and after mapping.
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