Author Archives: s3hh

Quickly run Ubuntu cloud images locally using uvtool

We have long been able to test Ubuntu isos very easily by using ‘testdrive’. It syncs releases/architectures you are interested in and starts them in kvm. Very nice. But nowadays, in addition to the isos, we also distribute cloud images. … Continue reading

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RSS over Pocket

When google reader went away, I switched to rss2email (r2e) which forwards rss feeds I follow to my inbox. Soon after that I was to take a trip, and I wanted to be able to read blogs on my e-reader … Continue reading

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announcing lxc-snapshot

In April, lxc-clone gained the ability to create overlayfs snapshot clones of directory backed containers. In may, I wrote a little lxc-snap program based on that which introduced simple ‘snapshots’ to enable simple incremental development of container images. But a … Continue reading

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libvirt defaults (and openvswitch bridge performance)

The libvirt-bin package in Ubuntu installs a default NATed virtual network, virbr0. This isn’t always the best choice for everyone, however it “just works” everywhere. It also provides some simple protection – the VMs aren’t exposed on the network for … Continue reading

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Line buffering (and talking computers and irc meetings)

When I was a kid, I wanted computers to talk to me (and vice versa). Why, decades later, am I still squinting at the screen during hour-long irc meetings? Basta! So the last two weeks I’ve been listening to our … Continue reading

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Creating and using containers – without privilege

Today I posted a (working but mainly POC) patchset against lxc which allows me to create and start ubuntu-cloud containers – completely as an unprivileged user. For more details see the introductory email to the patchset at http://sourceforge.net/mailarchive/forum.php?thread_name=1374246151-7069-9-git-send-email-serge.hallyn%40ubuntu.com&forum_name=lxc-devel Glossing over … Continue reading

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RSS

When I saw the news that Google reader was going away, my first thought, like a lot of other people, was “woohoo, it’s going to be fun writing a new way to follow RSS.” This past weekend I looked at … Continue reading

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