devel May 2010

devel@lists.centos.org

30 participants
17 discussions

Interested in IA64 build.
by James A. Peltier 22 Jan '13

22 Jan '13

I noticed on the SIG that people interested in other ports of interest. I'd like to express interest in the IA64 port. What is the best way to get started? I have two SGI Itanium 2 based machines. One 64 processor x 64GB SGI Altix and a 32 processor x 32GB RAM SGI Prism. They are currently running CentOS 4.8 and I would love to be able to run CentOS 5.5 on them to get them into compliance with the rest of the cluster. -- James A. Peltier Systems Analyst (FASNet), VIVARIUM Technical Director Simon Fraser University - Burnaby Campus Phone : 778-782-6573 Fax : 778-782-3045 E-Mail : jpeltier(a)sfu.ca Website : http://www.fas.sfu.ca | http://vivarium.cs.sfu.ca MSN : subatomic_spam(a)hotmail.com Does your OS has a man 8 lart? http://www.xinu.nl/unix/humour/asr-manpages/lart.html

9 53

Fasttrack for C-5
by Alan Bartlett 03 Dec '10

03 Dec '10

Karanbir, Is there an ETA for this repository yet? A status update would be appreciated, please. Regards, Alan.

10 33

'yum-security' plugin and fasttrack respository for CentOS 5.4
by Alan Bartlett 24 Jun '10

24 Jun '10

Yesterday evening (Tuesday December 8, 2009) a forum thread [1] was started by Stefan (under the ID of "gigglesworth") relating to the above subjects. As is well known, ELRepo provided the fasttrack packages during the lifetime of CentOS 5.3 but following on from Karanbir's assertion that CentOS will provide the fasttrack packages for 5.4 we, at ELRepo, have stepped down from providing that service. Will CentOS-devs please have a look at the above mentioned thread and then respond, accordingly, to the OP. Regards, Alan. [1] http://www.centos.org/modules/newbb/viewtopic.php?topic_id=23695&forum=42

3 5

DRBD again...
by Joseph L. Casale 22 Jun '10

22 Jun '10

A while we discussed dropping the old drbd packages out of the repo. I have a two node cluster I rolled from the same ks file and built rpms from a supported version of drbd using their trivial and well documented method, so when I needed help, I could get it:) During a `yum update` on only "one" node, it wants to replace drbd.x86_64 8.3.7-1 with drbd82? Uh, ok... I don't have the genuine skill to manage packages for a repo of such importance like a CentOS repo, but an abandoned package is of equal harm. When a user installs those and then goes to the drbd list for help I suspect he would get the same reply if he installed CentOS 5.0 then encountered an issue and asked for help. Fair? The list of fixes from 8.2.x to current is long. Given the package building is so well done for drbd, by Linbit, does it make sense to duplicate their effort and simply make work for the maintainers of this repo? Thanks guys, jlc

5 13

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

5 11

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

4 7

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

9 15

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"; } } }

4 6

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

6 11

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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devel May 2010