Christian Reis lives here
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I know you know. But well, just in case you forgot..
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Since 2004, I've been actively involved in
development of Launchpad, and in
2005 I became application manager for the project, together with Steve Alexander. These days
I lead a team of over 30 people at Canonical working on building a
platform for the future of open source development and
collaboration.
In 2003, I somehow managed an MSc degree from USP São Carlos, where I
wrangled out my dissertation on defining a Process Model for Free
Software Projects. My MSc project is described in two long documents (in portuguese). I
graduated in Computer Engineering from UFSCar in 1997, though most of that
time evaporated into swimming pools and bike trails.
A couple of years ago (just as I had decided I wanted nothing to do
with computers) I discovered Free Software and Unix, and I've been
working on both ever since then. I've contributed to dozens of
free software projects, and I am currently an active developer for
Bugzilla, PyGTK, ZODB, Kiwi and IndexedCatalog.
I've worked with Web development (who hasn't?) and Usability,
additionally, in the past years.
I am a partner at Async Open
Source, a company that provides development and consulting
services focused on on Free Software. I helped found Async in early
1999.
When I'm not pretending to be a software engineering manager I
engage in outdoor sports, travelling, language and vain philosophy. I've raced mountain bikes
for a couple of years now, and from 1999 to 2003 I raced a number of
national-level adventure races, including the multi-day EMA 2000 and
2001.
Getting in touch with me
| Online: |
Homepage (~kiko)
<kiko at async.com.br> |
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| Phones: |
+55 16 3376 0125 work
+55 16 9112 6430 mobile |
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| Home:
(map)
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Rua Rui Barbosa 1977
Sao Carlos, SP
Brazil 13560-330
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What he's been up to
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08.12.2013
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Minors and airline points
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- Did you know TAM only lets you enroll into their alliance program
children that are older than 2 years old? I generally wouldn't care
to give a corporation a children's data, but the round trip to Taipei is
probably worth a free flight or two so it would be nice to get.
- It turns out China Airlines and SAA don't let you either. I guess
those points are void :-/
- Just recharged my TIM and Vivo pre-paid chips with 50 and 60,
respectively. They are supposed to last 180 days. Will they?
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03.10.2013
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NFS TUNE
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21.08.2013
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Catch-all
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- Lent: GoPro to Iuri
- Lent: Wheel-bag to João (PT)
- Lent: Wheel-bag to Ozias (Disc)
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20.08.2013
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GRUB2 RAID weirdness.. understood and solved
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- I rebooted the server for the first time (after the failed disk) to
cope with a kernel upgrade. No, I haven't yet swapped out the disk --
the chassis makes it a bit painful. But anyway, to my surprise, the
system got stuck in the grub prompt, and I couldn't get it to boot by
specifying the linux and initrd lines. Why?
- One symptom I found was that cat /boot/grub/grub.cfg returned garbage.
The other was that there was only one kernel version listed in /boot,
although I had just upgraded the kernel so there had to be at least two.
And yet another was that a file I had touched in /etc was also garbaged
up. What's going on?
- It turns out that grub was assembling the raid array using the failed
drive (with SCSI ID 8) instead of the spare. It's really interesting
that grub does a read-only RAID mount, but with very little checking, so
when you have failed drives it show you weirdly half-stale data. To
address this I disabled the drive in the server's SCSI utility and
booted again, successfully. It gives an indication of how the grub RAID
code works; I wish I had a way of saying what drives were being used in
an md array as it would have saved me a lot of pondering.
- Oh, and I used the SCSI utility to verify the drive as well. I have
re-added it back and am waiting for it to fail again. The IBM drive
seems to be really slow.. or maybe it's that it's on the secondary SCSI
interface with a slower tape drive on it as well.
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05.08.2013
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RAID drive failure
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- Our sdd drive (SCSI ID 8) was kicked out of the raid because of an
abort SCSI command overnight, at 3:36am local time to be precise. I'll
add it back to the array after a reboot to see if it is transient or if
it's really dead. The spare meanwhile seems to be working okay, but the
resync takes ages..
- It's worth noting that this fall-back setup has become weirdly slow.
I'm still trying to figure out if it's the disk or something else.
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06.06.2013
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Java Banco do Brasil Locale bonging
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- Banco do Brasil's Java authenticator won't work in Mari's chromium
browser, but it works in Firefox. What is the difference? Well, in
chromium, we run into this issue:
[groups.google.com]
which has shown up on
[bugs.debian.org] and
[bugs.debian.org]
- So Mari's locale is pt_BR.UTF-8. But the question is, if the error
really is locale-dependent, why doesn't it trigger for Firefox?
- I know now one more piece of the puzzle. We know the system locale is
pt_BR.UTF-8. But if I visit [www.browserleaks.com] with both
browsers I notice there is an important difference when displaying the
results of Locale.getDefault() -- Chromium displays:
Locale.getDefault() :
Language Code en
Display Language English
Country Code US
Display Country United States
whereas Firefox gives me
Locale.getDefault() :
Language Code pt
Display Language português
Country Code BR
Display Country Brasil
and that's likely to explain why Chromium fails (C locale parsing
assuming a dot as the decimal separator) while Firefox succeeds.
- I'm still not sure what triggers the BB machine authentication reset
that we run into periodically. So far I know that kernel updates do
trigger it. What doesn't: java updates, firefox updates. Unknown:
changing from OpenJDK to Oracle Java.
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