Non-disruptive modification of a device mapper stack
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United States of America Patent
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Nov 3, 2015
Grant Date -
Dec 11, 2014
app pub date -
Jun 7, 2013
filing date -
Jun 7, 2013
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Abstract
Embodiments relate to non-disruptive modification of a device mapper stack. Aspects include receiving the device mapper stack comprising a first device mapper layer having an active mapping table and creating a second device mapper layer having a copy of the active mapping table from the first device mapper layer. Aspects further include creating an inactive mapping table having a desired mapping logic in the first device mapper layer and suspending and resuming an operation of the first device mapper layer. Suspending and resuming causes the active mapping table of the first device mapper layer to be replaced with the inactive mapping table of the first device mapper layer.
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