CBC Navigation Course

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This was the GPS followup to the previous map and compass navigation exercise. A really nice walk, apart from crazy horse lady. The walk also included another visit to Forster trig. I'm not sure if its the time of year or the direction of approach, but this ascent was much nicer than my previous one, we seemed to avoid most of the prickly things. It would be interesting to recce the other side of the hill and see if I just got unlucky last time, or misread the contours. [kml: 20151010-1]

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Geocaching at the base of Mount Ainslie

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I have a bit of a backlog of posts about recent walks which I am working through. Last week I found myself in Ainslie for an appointment which ended at lunch time, so I figured I'd go for a walk. There is a series of geocaches near Campbell Park West (a set of office buildings for non-Canberrans), so off I went. The cache series was nice, but the most exciting part of the walking in this area was all the unexploded ordinance (UXO) warnings. I'm sure the area is totally safe, as many people walk through it each day, but it certainly adds an air of adventure to the walk. You can find a list of the UXO reports for the ACT on the Department of Defence website, I must say that its not very impressive that the Department has contaminated so many sites around Australia without remediating them -- there are heaps in New South Wales for example. The ACT gets off relatively lightly with only three contaminated sites. Its also interesting to note that a suburb very close to me was used as a bombing practise range in World War Two. I'm not aware of anyone in my…

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Lunchtime geocaching

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So, I didn't get to sleep last night until 4:30am because of a combination of work meetings and small children, so today was a pretty weird day for me. I was having a lot of trouble concentrating at lunch time, so I decided a walk was the least worst thing I could do with my time. I decided to knock off some of the few remaining geocaches in southern Tuggeranong that i haven't found yet. This walk was odd -- it started and ended in a little bit of Theodore they never got around to actually building, and I can't find any documentation online about why. It then proceeded through a nice little green strip that has more than its share of rubbish dumped, Cleanup Australia needs to do a visit here! Then there were the Aboriginal axe grinding grooves (read more) just kind of in the middle of the green strip with no informational signage or anything. Finally, a geocache at an abandoned look out, which would have been much nicer if it wasn't being used as an unofficial dump now. That said, a nice little walk, but I have no real desire to revisit this one any time…

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Garran green strip

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When I was a teenager my best mate lived in a house which backs onto this smallish reserve and we used to walk his dog here heaps. I had a few spare moments yesterday, so I was keen to do a quick explore and see what its like now. The short answer is that its still nice -- good terrain, nice mature trees, and a few geocaches. I think this one would be a good walk for cubs. [kml: 20151001-2]

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Wandering around Curtin

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I decided to go on a little walk on the way home from a work lunch and I don't regret it. This is a nice area, which I was exploring for geocaches. I probably wouldn't have come here at all, but it was the second part of the "Trees of Curtin" walk from Best Bush, Town and Village Walks in and around the ACT that I had done the first half of ages ago. I am glad I came back for the second half -- to be honest I was pretty bored with the first half (a bike path beside a major road mostly), whereas this is much more like walking around in nature. The terrain is nice, no thistles, and plenty of horses. A nice afternoon walk overall. Now back to reviewing Mitaka specs. [kml: 20150930-1]

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Second trail run

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I went for my second trail run last night. This one was on much rockier terrain, and I ended up tweaking my right knee. I think that was related to the knee having to stabilize as I ran over uneven rocks. I'll experiment by finding a different less awkward trail to run and seeing what happens I suppose. [kml: 20150929-1]

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Old Joe and Goorooyarroo

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Steve, Mel, Michael and I went for a walk to Old Joe trig yesterday. I hadn't been to Goorooyarroo at all before, and was quite impressed. The terrain is nice, with some steep bits as you get close to the border (its clear that the border follows the water catchment from a walk around here). Plenty of nice trees, not too many thistles, and good company. A nice morning walk. We bush bashed to the trig straight up the side of the hill, and I think there were gentler (but longer) approaches available -- like for instance how we walked down off the hill following the fence line. That said, the bush bash route wasn't terrible and its probably what I'd do again. I need to come back here and walk this border segment, that looks like fun. There are also heaps of geocaches in this area to collect. [kml: 20150928-1]

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How we got to test_init_instance_retries_reboot_pending_soft_became_hard

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I've been asked some questions about a recent change to nova that I am responsible for, and I thought it would be easier to address those in this format than trying to explain what's happening in IRC. That way whenever someone compliments me on possibly the longest unit test name ever written, I can point them here. Let's start with some definitions. What is the difference between a soft reboot and a hard reboot in Nova? The short answer is that a soft reboot gives the operating system running in the instance an opportunity to respond to an ACPI power event gracefully before the rug is pulled out from under the instance, whereas a hard reboot just punches the instance in the face immediately. There is a bit more complexity than that of course, because this is OpenStack. A hard reboot also re-fetches image meta-data, and rebuilds the XML description of the instance that we hand to libvirt. It also re-populates any missing backing files. Finally it ensures that the networking is configured correctly and boots the instance again. In other words, a hard reboot is kind of like an initial instance boot, in that it makes fewer assumptions about…

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First trail run

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So, now I trail run apparently. This was a test run for a hydration vest (thanks Steven Hanley for the loaner!). It was fun, but running up hills is evil. [kml: 20150922-1]

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