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4602 discussions

Forum Post: "Lance Davis Question..."
by Alan Bartlett 21 Jun '10

21 Jun '10

There has been a recent forum post with the subject header as quoted, above. [1] I feel that it would be best answered by one of the Core Development Team. Of all the usual people that I would consider to ask to craft a suitable response, I think Russ would be the most appropriate person. So, grandchildren permitting, a sentence -- or even a paragraph -- would be appreciated, please. Regards, Alan. [1] http://www.centos.org/modules/newbb/viewtopic.php?topic_id=26780&forum=14

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CentOS Artwork Repository (tagged revision 0.0.1)
by Alain Reguera Delgado 18 Jun '10

18 Jun '10

Hi Guys, I would like to share with you the 0.0.1 tagged revision of CentOS Artwork Repository. The CentOS Artwork Repository, as it comes inside 0.0.1 tagged revision, is a tool where graphic designers, translators and programmers do their best to automate image production used to build a monolithic corporate visual identity for the CentOS project. As final goal we have in mind to automate image rendering for many languages, many major releases, and different artistic themes; in a way that people building rpms (or anything that needs images) could use the artwork rendering process. This, in order to give one step forward onto CentOS automation. The CentOS Artwork Repository 0.0.1 tagged revision is a preview of what we are doing to automate CentOS artwork production. It is a work in progress and surely many things need to be corrected. If you are interested on CentOS Artwork, download the following file: http://wiki.centos.org/ArtWork?action=AttachFile&do=get&target=centos-artwo… test it on your workstation, report bugs, and make suggestions. It is possible that 0.0.1 tagged revision structure be reflected inside https://projects.centos.org/svn/artwork, which is the CentOS Artwork Repository standard location. Best Regards, al.

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Artwork pre-prep for v6
by Marcus Moeller 17 Jun '10

17 Jun '10

Hi all, as already stated in IRC I am going to start pre-preparation of a new artwork for v6. This will include a custom Plymouth theme as well as wallpaper and icon packages. If one wants to complain, do it now, please. Otherwise I will just go ahead. Best Regards Marcus

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Debuginfo packages not signed
by Phil Schaffner 15 Jun '10

15 Jun '10

Just noticed that (at least some - e.g. CentOS-5 kernel-debuginfo, kernel-debuginfo-common, aspell-debuginfo) debuginfo packages are not signed. Started to file a bug entry, but don't know if it is merited. Is the intent to have these packages signed? The Debuginfo Wiki page shows "gpgcheck=1". http://wiki.centos.org/AdditionalResources/Repositories/DebugInfo Phil

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LiveCD suggestion
by Phil Schaffner 07 Jun '10

07 Jun '10

For the next iteration of the LiveCD I would suggest omitting the netinstall option. This has caused a rather large support load on the fora (or forums if you prefer) from people who can't get it to work. As netinstall is really most useful with a "perfect" network connection or local archive, and can be tricky to get right, it is just confusing a lot of the LiveCD "market segment". More sophisticated users will just grab the netinstall CD or use images/boot.iso. Removing it would also leave more room for useful apps. Phil

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Forum overhaul
by Monte Milanuk 31 May '10

31 May '10

Hello all, As an end user, I would like to know if there is any forward progress on doing something about the CentOS forums? This apparently has came up time and again, with various examples being given of the deficiencies of the existing setup (depending on your point of view). As near as I can tell the general consensus seems to be 'yes, something needs to be done'... and thats about as far as it gets. I realize everybody has lots on their plate, but this has been languishing for a year or more, with no apparent changes being made. For a self-proclaimed 'enterprise' OS, the associated support forum doesn't make much of a first impression. http://www.centos.org/modules/newbb/viewtopic.php?topic_id=14921&forum=18 http://lists.centos.org/pipermail/centos-devel/2008-September/003366.html https://www.centos.org/modules/newbb/viewtopic.php?topic_id=23201&start=0#f… http://lists.centos.org/pipermail/centos-devel/2009-December/005252.html What needs done? What needs decided? Whose backside needs a fire lit under it? What can *I* do? Monte

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Awaiting C-5 Updates.
by Alan Bartlett 29 May '10

29 May '10

Hi KB, Some users are getting restless [1]. Would you like / do you have the time to post to that thread, please? If negative, may I have a comment from you that I can post on your behalf. Thanks, Alan. [1] http://www.centos.org/modules/newbb/viewtopic.php?topic_id=26452&forum=37

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disk i/o stalls with mptsas since upgrade to centos 5.4
by Lennert Buytenhek 27 May '10

27 May '10

Hi! On two different machines, I've been experiencing disk I/O stalls after upgrading to the CentOS 5.4 kernel. Both machines have an LSI 1068E MPT SAS (mptsas) controller connected to a Chenbro CK13601 36-port SAS expander, with one machine having 16 1T WD disks hooked up to it, and the other having a mix of about 20 WD/Seagate/Samsung/Hitachi 1T and 2T disks. When there's a disk I/O stall, all reads and writes to any disk behind the SAS controller/expander just hang for a while (typically for almost exactly eight seconds), so not just the I/O to one particular disk or a subset of the disks. The disks on other (on-board SATA) controllers still pass I/O requests when the SAS I/O stalls. I hacked up the attached (dirty) perl script to demonstrate this effect -- it will read /proc/diskstats in a tight loop, and keep track of which request entered the request queue when, and when it completed, and it will WTF if a request took more than a second. (The same thing can probably be done with blktrace, but I was lazy.) New requests get submitted, but the pending ones fail to complete for a while, and then they all complete at once. This happens on kernel-2.6.18-164.11.1.el5, while reverting to the latest CentOS 5.3 kernel (kernel-2.6.18-128.7.1.el5) makes the issue go away again, i.e. no more stalls. It doesn't seem to matter whether the I/O load is high or not -- the stalls happen even under almost no load at all. Before I dig into this further, has anyone experienced anything similar? A quick google search didn't come up with much. thanks, Lennert #!/usr/bin/perl -w use Time::HiRes qw(clock_gettime CLOCK_MONOTONIC); sub read_stats { local *STATS; my %stats; %stats = (); open STATS, "< /proc/diskstats"; while (<STATS>) { my @fields; chomp; @fields = split; if ($fields[2] =~ /^sd[a-z]$/) { my $head = $fields[3] + $fields[7]; my $tail = $head + $fields[11]; $stats{$fields[2]} = [ $head, $tail ]; } } close STATS; return \%stats; } my %heads; my %queues; %heads = (); %queues = (); while (1) { my $now; my %stats; my $disk; $now = clock_gettime(CLOCK_MONOTONIC); %stats = %{read_stats()}; foreach $disk (sort keys %stats) { my $head; my $tail; next if ($disk eq "sda"); $head = $stats{$disk}->[0]; $tail = $stats{$disk}->[1]; if (not defined $heads{$disk}) { print "new disk $disk\n"; $heads{$disk} = $head; $queues{$disk} = []; } while ($heads{$disk} + scalar(@{$queues{$disk}}) < $tail) { push @{$queues{$disk}}, $now; print "$now: $disk add -> " . scalar(@{$queues{$disk}}) . "\n"; } while ($heads{$disk} < $head) { my $s; $heads{$disk}++; $s = int(1000 * ($now - (shift @{$queues{$disk}}))); if ($s > 1000) { print "WTF on " . localtime(time()) . " for $s ms\n"; } print "$now: $disk remove after $s ms -> " . scalar(@{$queues{$disk}}) . "\n"; } } }

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CentOS 5 PowerPC port?
by Greg Snyder 26 May '10

26 May '10

Hi all, I'm trying to get a CentOS 5 port started for PowerPC. I saw there was some email back in February about this, but did not know what progress had been made. Does anyone have any news? I'm most interested in 32-bit, with the hope of eventually running it on some Apple (G4 and G5) desktops, as well as on some embedded PowerPC boards (mostly amcc 460ex based). So I'd be hoping to build with some pretty generic target options so the RPMs would be useful in the most places. Are there tools, scripts or techniques used to do the x86 RPMs build that could be leveraged? I looked around on the CentOS website and wiki, but could not find docs or sources for this. Any pointers on this, or just generally how the x86 build/build server is bootstrapped, and the x86 RPMs are produced, would be greatly appreciated. Given my previous somewhat painful experience with autoconf-related cross-build issues, my first thought was to build the bulk of the RPMs natively on PowerPC, rather than x86 to PowerPC cross-build. I have a few PowerPC boxes (currently running Fedora 12), including a quad core 2.5GHz G5, that I'd be happy to share with others interested in getting a CentOS PowerPC port done. I'd be grateful for any tips, help or direction. Thanks, Greg

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builder running notification code fragment
by R P Herrold 26 May '10

26 May '10

Let me surface a conversation happening elsewhere here, for people interested in building a distibution I've mentioned my toy s390x builder privately to a few people, and have some external private testers; additionally I think I mentioned it on the Marist Linux/IBM list and perhaps here publicly. Someone noticed because I picked up a 'follower' on my twitter progress tool On Wed, 26 May 2010, R P Herrold wrote: > On Wed, 26 May 2010, xxx wrote: > >> On 05/26/2010 03:53 PM, R P Herrold wrote: >>> As to other builders, indeed, I got an email that an >>> unknown person's west coast build bot just started >>> following my toy build builder [for s390x] bot >>> http://twitter.com/buildmonbot >>> http://twitter.com/mrgbuildstatus >> damn, now I *gota* get me one of those! >> >> Sounds like a project for the evening! > more like 5 minutes to get started ... > > I've been tinkering with the 'self-hosting' convergence > progress indicator -- just added a feature for the next > restart of it > > [herrold@ibm bin]$ grep tty *sh > remote-build-try.sh: [ "x${NOTWEET}" != "xy" ] && > echo "disk use at ${DISK} ... bailing" | ttytter -script > remote-build-try.sh: ttytter -script > remote-build-try.sh:[ "x${NOTWEET}" != "xy" ] && echo "new > pass: $LNS candidates " | ttytter -script > remote-build-try.sh: [ "x${NOTWEET}" != "xy" ] && > echo "built $BASN (${COUNTER} of ${LNS}) " | ttytter -script > > ==================== > > [herrold@ibm bin]$ head /usr/local/bin/ttytter > #!/usr/bin/perl -s > ######################################################################### > # > # TTYtter v1.0 (c)2007-2010 cameron kaiser (and contributors). > # all rights reserved. > # http://www.floodgap.com/software/ttytter/ > # > # distributed under the floodgap free software license > # http://www.floodgap.com/software/ffsl/ > # -- Russ herrold

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