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LinuxConf Europe 2007
Conference and Tutorials
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Sunday 2nd - Wednesday 5th September
University Arms Hotel, Cambridge, England

LinuxConf Europe 2007

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LPI Exams

Conference Dinner (Sunday)

Duxford Excursion (Monday)

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About Cambridge

Kernel Summit 2007

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Bryn M. Reeves - Red Hat

Pimp my volumes

The device-mapper provides the kernel-level abstraction to support a number of userspace volume and storage mangagement applications including LVM2, dmraid, device-mapper-multipath and EVMS.

Although many administrators are familiar with these high-level tools, the underlying driver components are often less-well-understood. Administrators and developers can benefit from a more complete understanding of these components when managing or developing for systems that use the device-mapper.

Beginning with a brief overview of the architecture and organisation of the kernel device-mapper and the interface with userspace this presentation looks beyond the basic capabilities offered by the tools and examines some of the under-the-hood features and functionality with a focus on hands-on troubleshooting, problem replication and experimentation.

Practical examples are given for common situations including recovering from a damaged volume group, simulating very large storage devices on small systems and analysing and editing LVM2 metadata.


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