Wednesday, June 18, 2025

Simple Hashing with AF_ALG

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My previous post demonstrated how the Linux kernel's AF_ALG socket type can be used with io_uring for fast hashing. I wasn't very...
Wednesday, October 9, 2024

Speedreader's Digest: Hashing Data on Linux using AF_ALG

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(I seem to have written this in the tone of an advertisment for household cleaning products. Sorry.) Do you need to quickly hash (e.g. ...
Tuesday, November 29, 2022

Btrfs Seed Devices for A/B System Updates

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A/B system updates, as described here , provide a way for an operating system (OS) to seamlessly update from an old version to a new versio...
Saturday, April 21, 2018

Samsung Android Full Device Backup with TWRP

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Warning Following these instructions, correctly or incorrectly, may leave you with a completely broken or bricked device . Furthermore, fl...
4 comments:
Monday, January 29, 2018

Building Ceph master with C++17 support on openSUSE Leap 42.3

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Ceph now requires C++17 support, which is available with modern compilers such as gcc-7. openSUSE Leap 42.3, my current OS of choice, inc...
1 comment:
Monday, July 3, 2017

Multipath Failover Simulation with QEMU

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While working on a Ceph OSD multipath issue, I came across a helpful post from Dan Horák on how to simulate a multipath device under QEMU. ...
5 comments:
Friday, June 9, 2017

Rapido: Quick Kernel Testing From Source (Video)

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I presented a short talk at the 2017 openSUSE Conference on Linux kernel testing using Rapido . There were many other interesting talks...