Linux Piter 2019 / Christian Brauner: "Making the Kernel and Udev Namespace Aware" / Санкт-Петербург, Россия / 4 октября 2019 - 5 октября 2019

Linux Piter 2019

4 октября 2019 (пт), 09:00 - 5 октября 2019 (сб), 19:00


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Christian Brauner: "Making the Kernel and Udev Namespace Aware"

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Making the Kernel and Udev Namespace Aware

On non-embedded systems device management in Linux is a task split between kernelspace and userspace. Since the implementation of the devtmpfs pseudo filesystem the kernel is solely responsible for creating device nodes while udev in userspace is mainly responsible for consistent device naming and permissions. The devtmpfs filesystem however is not namespace aware. As such devices always belong to the initial user namespace. In times of SR-IOV enabled devices it is possible and needed to hand off devices to non-initial user namespaces. The last couple of months I’ve been working on making device management in the Kernel namespace aware. With recent patchsets of mine we have now reached that goal. As such userspace can now tie devices to a specific user namespace. This talk aims to do a couple of things. First, to give a more in-depth explanation of device management in Linux. Second, to explain the concept of namespace aware device management. Third, to explain the patchsets that were needed to make device management namespace aware.


Christian Brauner
Germany. Tuebingen
Software Engineer
Canonical Ltd.

Christian Brauner is a kernel and core developer and maintainer of the LXD and LXC projects. He works mostly upstream on the Linux Kernel and lower-level problems. He is strongly committed to working in the open, and a strong proponent of Free Software. Christian has been active in the open source community for a long time and is a frequent speaker at various large events.

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