Invention Grant
- Patent Title: Non-disruptive modification of a device mapper stack
- Patent Title (中): 设备映射器堆栈的无中断修改
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Application No.: US13912245Application Date: 2013-06-07
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Publication No.: US09176890B2Publication Date: 2015-11-03
- Inventor: Clement L. Dickey
- Applicant: International Business Machines Corporation
- Applicant Address: KY Grand Cayman
- Assignee: GLOBALFOUNDRIES INC.
- Current Assignee: GLOBALFOUNDRIES INC.
- Current Assignee Address: KY Grand Cayman
- Agency: Cantor Colburn LLP
- Main IPC: G06F12/02
- IPC: G06F12/02 ; G06F12/10 ; G06F3/06

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.
Public/Granted literature
- US20140365739A1 NON-DISRUPTIVE MODIFICATION OF A DEVICE MAPPER STACK Public/Granted day:2014-12-11
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