Invention Grant
- Patent Title: Virtual disk alignment access
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Application No.: US14598872Application Date: 2015-01-16
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Publication No.: US09940259B2Publication Date: 2018-04-10
- Inventor: Nathan D. Fontenot , Robert C. Jennings, Jr. , Joel H. Schopp , Michael T. Strosaker
- Applicant: International Business Machines Corporation
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Lieberman & Brandsdorfer, LLC
- Main IPC: G06F12/10
- IPC: G06F12/10 ; G06F12/1036

Abstract:
Embodiments relate to a virtualized storage environment with one or more virtual machines operating on a host and sharing host resources. Each virtual machine has a virtual disk in communication with a persistent storage device. The virtual machine(s) may be misaligned with the persistent storage device so that a virtual block address does not correspond with a persistent storage block address. A relationship between the virtual disk(s) and the persistent storage device is established, and more specifically, an alignment delta between the devices is established. The delta is employed to translate the virtual address to the persistent address so that the virtual and persistent storage blocks are aligned to satisfy a read or write operation.
Public/Granted literature
- US20160210240A1 VIRTUAL DISK ALIGNMENT ACCESS Public/Granted day:2016-07-21
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