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4618 discussions

Storage SIG proposal
by Patrick McGarry 13 Feb '14

13 Feb '14

Greetings CentOS-devel, We here at Inktank (and the Ceph project) are quite interested in the direction that CentOS is headed and would love to propose a 'Storage SIG' to help ensure that something so fundamental gets the proper attention. There are definitely aspects that will overlap with Core, Cloud, and Virtualization, but we think there are plenty of places where storage should have it's own discourse. We are already building CentOS packages for Ceph and would like to encourage other storage offerings to do the same. We are definitely in alignment with the requirements and want to ensure that: 1) the discourse remains primarily CentOS related, or at least tangentially applicable. 2) there is plenty of feedback and control into, and out of, the core CentOS community. 3) all communications take place in public (either IRC or mailing lists). 4) all code is compatible with a FOSS license (in our case, LGPL v2 w/ fragmented copyright). 5) all documentation is compatible with the CentOS wiki license. 6) the storage SIG would be very mindful of CentOS direction and coordinate effectively. 7) we have the appropriate buy-in from the CentOS devteam. For a (very rough) outline of form and function I was thinking of the following. However, this will obviously grow and mature with feedback. Mission To ensure that CentOS is at the forefront of next generation storage technology and has a wide range of mature options for both traditional and distributed systems. Technical Goals * Assist with packaging and testing of storage technologies for CentOS repositories * Documenting paths to deployment and use for various storage technologies * Hold an open discourse around storage technology as it applies to CentOS * Work closely with providers of storage technology to ensure tight integration with CentOS Community Goals * Provide an easy-to-consume menu of storage and deployment/orchestration options * Act as a resource for those exploring next generation storage technology * Ensure that all storage technology is addressed equally without favoritism * Work with users to publish use cases and real-world examples for review I welcome any and all feedback and look forward to working with the CentOS community. Thanks. Best Regards, Patrick McGarry Director, Community || Inktank http://ceph.com || http://inktank.com @scuttlemonkey || @ceph || @inktank

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irc bans for web gateway on #centos
by Karanbir Singh 12 Feb '14

12 Feb '14

hi guys, we seem to block all web gateways to the irc channel - is the aim to just block the freenode hosted one ? if so, can the ban be made mode specific to just that interface ? - KB -- Karanbir Singh +44-207-0999389 | http://www.karan.org/ | twitter.com/kbsingh GnuPG Key : http://www.karan.org/publickey.asc

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eventfd to select problem between Intel and AMD
by lulin 12 Feb '14

12 Feb '14

Hi I met a strange problem, I wrote a simple program that create some eventfds and add it to select loop, create a thread to write some bytes to a random eventfd, when i run 100 instances on a Intel E5-2650, mpstat shows that we have 95% idle of CPU, but when i run same 100 instances on a AMD Opteron(TM) Processor 6272, mpstat shows 50% on sys, 50% idle. Kernel version is Linux 2.6.32-279.el6. The attachment is the source code of my test program. Can someone give any suggestion?? Thanks, :) Bellow is the environment: =============Intel E5-2650============================= processor: 31 vendor_id: GenuineIntel cpu family: 6 model: 45 model name: Intel(R) Xeon(R) CPU E5-2650 0 @ 2.00GHz stepping: 7 cpu MHz: 2000.149 cache size: 20480 KB physical id: 1 siblings: 16 core id: 7 cpu cores: 8 apicid: 47 initial apicid: 47 fpu: yes fpu_exception: yes cpuid level: 13 wp: yes flags: fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx pdpe1gb rdtscp lm constant_tsc arch_perfmon pebs bts rep_good xtopology nonstop_tsc aperfmperf pni pclmulqdq dtes64 monitor ds_cpl vmx smx est tm2 ssse3 cx16 xtpr pdcm dca sse4_1 sse4_2 x2apic popcnt aes xsave avx lahf_lm ida arat epb xsaveopt pln pts dts tpr_shadow vnmi flexpriority ept vpid bogomips: 3999.44 clflush size: 64 cache_alignment: 64 address sizes: 46 bits physical, 48 bits virtual power management: [root@OVP ~]# mpstat 2 Linux 2.6.32-279.el6.x86_64 (OVP.com) 02/11/2014 _x86_64_(32 CPU) 08:57:40 PM CPU %usr %nice %sys %iowait %irq %soft %steal %guest %idle 08:57:42 PM all 0.24 0.00 0.24 0.00 0.00 0.00 0.00 0.02 99.50 08:57:44 PM all 0.00 0.00 0.19 0.00 0.00 0.00 0.00 0.10 99.71 08:57:46 PM all 0.19 0.00 0.29 0.00 0.00 0.00 0.00 0.02 99.50 08:57:48 PM all 0.34 0.00 0.29 0.00 0.00 0.02 0.00 0.32 99.02 ==================AMD Opteron(TM) Processor 6272========================= processor : 63 vendor_id : AuthenticAMD cpu family : 21 model : 1 model name : AMD Opteron(TM) Processor 6272 stepping : 2 cpu MHz : 2100.089 cache size : 2048 KB physical id : 3 siblings : 16 core id : 7 cpu cores : 8 apicid : 111 initial apicid : 111 fpu : yes fpu_exception : yes cpuid level : 13 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm constant_tsc rep_good nonstop_tsc extd_apicid amd_dcm aperfmperf pni pclmulqdq monitor ssse3 cx16 sse4_1 sse4_2 popcnt aes xsave av x lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs xop skin it wdt lwp fma4 nodeid_msr topoext perfctr_core cpb npt lbrv svm_lock nrip_save tsc_scale vmcb_cl ean flushbyasid decodeassists pausefilter pfthreshold bogomips : 4199.79 TLB size : 1536 4K pages clflush size : 64 cache_alignment : 64 address sizes : 48 bits physical, 48 bits virtual power management: ts ttp tm 100mhzsteps hwpstate cpb amd TM 6272 09:43:11 PM CPU %usr %nice %sys %iowait %irq %soft %steal %guest %idle 09:43:12 AM all 2.42 0.00 53.37 0.00 0.00 0.03 0.00 0.43 43.74 09:43:13 AM all 2.91 0.00 55.37 0.00 0.00 0.02 0.00 0.14 41.55 09:43:14 AM all 2.34 0.00 55.60 0.00 0.00 0.02 0.00 0.19 41.85 09:43:15 AM all 3.81 0.00 55.32 0.00 0.00 0.02 0.00 0.16 40.69 09:43:16 AM all 2.63 0.00 54.53 0.00 0.00 0.02 0.00 0.13 42.70 09:43:17 AM all 2.47 0.00 55.60 0.00 0.00 0.03 0.00 0.18 41.72 09:43:18 AM all 2.50 0.00 55.64 0.00 0.00 0.02 0.00 0.18 41.67 09:43:19 AM all 3.34 0.00 54.61 0.00 0.00 0.02 0.00 0.22 41.81 09:43:20 AM all 2.39 0.00 55.21 0.00 0.00 0.02 0.00 0.18 42.20 09:43:21 AM all 2.83 0.00 53.78 0.00 0.00 0.02 0.00 0.34 43.03 09:43:22 AM all 2.63 0.00 53.96 0.00 0.00 0.02 0.00 0.24 43.15 ====Perf on AMD=====: - 25.64% [kernel] [k] fget_light - fget_light - 96.65% do_select core_sys_select sys_select system_call_fastpath - __select 99.98% __libc_start_main - 2.39% core_sys_select sys_select system_call_fastpath - __select 100.00% __libc_start_main - 15.88% [kernel] [k] _spin_lock_irqsave - _spin_lock_irqsave - 46.50% eventfd_poll do_select core_sys_select sys_select system_call_fastpath - __select 99.97% __libc_start_main + 26.00% add_wait_queue + 21.97% remove_wait_queue + 2.64% do_select + 1.32% __pollwait + 1.10% free_poll_entry + 9.89% [kernel] [k] _spin_unlock_irqrestore + 8.09% [kernel] [k] fput + 4.79% [kernel] [k] __pollwait + 3.64% [kernel] [k] do_select + 2.78% [kernel] [k] eventfd_poll + 2.16% [kernel] [k] list_del + 2.13% efd_test2 [.] main + 1.87% [kernel] [k] __list_add

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/opt/rh is a directory and not a symbolic link when installing devtoolset
by Dave Johansen 11 Feb '14

11 Feb '14

I just installed devtoolset-1.1-gcc-c++ and devtoolset-1.1-gcc-plugin-devel on a clean install and after doing so /opt/rh was a directory and not a symbolic link to /opt/centos. It was an easy fix, but is there something I can do to help diagnose the cause of the issue so it won't bite other people? Thanks, Dave

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CentOS Dojo / Hackathon for Cloud Images
by Karanbir Singh 10 Feb '14

10 Feb '14

hi, On the 31st Jan, we hosted a CentOS Cloud Instance hackathon at the CentOS Dojo @ IBM Forum, brussels. We had contributions from the redhat openstack team, the cloudstack people, hpcloud, opennebula and the xen crew. Apart from getting the base images done for these, we also had a few docker images built, xen-pv and xen=hvm images for xen4centos and as a final bonus towards the end of the day, I was able to update tooling to build all of the above against the rhel7beta tree ( the actual instance building work was all being done against centos-6/x86_64 only ). All in all, I closed the day with 84 attempts ( of which 57 were successful ). During the hack session, everyone was targetting, as had been planned really - a common cloud-init package. Before I start pushing the content up publicly and upload the images done in the session, it would be good to have the conversation around cloud-init. Are we going to keep consuming it from EPEL ? which is hard and tricky, or are we going to pull it into a centos.org repo ( Extras/ seems like a good target, for base common stuff ). And if we do pull it in, how are we going to keep in sync with EPEL ( and maybe other repos ) so we dont end up ver-rel thrashing at updates time. For the sake of completeness, the AWS images for 6.5 I've pushed yesterday ( Wed 5th ) are as the 6.4 ones ( i.e. no cloud-init ). Finally, to everyone there at the hackathon, I apologise for the rater poor network conditions. Its something I will try and fix for the next time. - KB -- Karanbir Singh +44-207-0999389 | http://www.karan.org/ | twitter.com/kbsingh GnuPG Key : http://www.karan.org/publickey.asc

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Office Hours on GSoC
by Karsten Wade 10 Feb '14

10 Feb '14

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Late reminder, we'll be starting the office hours on Google Summer of Code participation for the project. I'm mainly going to focus on how to be a successful mentoring organization, history, and what work there is to do. https://www.youtube.com/user/TheCentOSProject Live on #centos-devel on Freenode http://www.centos.org/media - -- Karsten 'quaid' Wade .^\ CentOS Doer of Stuff http://TheOpenSourceWay.org \ http://community.redhat.com @quaid (identi.ca/twitter/IRC) \v' gpg: AD0E0C41 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iEYEARECAAYFAlL49d8ACgkQ2ZIOBq0ODEH1ZACfQum9Ypef4C98Pw1ujYwchUs2 jPIAoLw+Mv0xpp5SlNVneZPn58TIMK1s =Fs/L -----END PGP SIGNATURE-----

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Xen/Xen4CentOS SIG
by Lars Kurth 10 Feb '14

10 Feb '14

Hi all, congratulations on the RedHat/CentOS announcement. Sorry for responding so late on SIGs: I was in China until recently and had no time to follow up. There is definitely interest to continue the Xen (or Xen4CentOS) SIG within CentOS, building on the Xen4CentOS work of last year. I want to get the endorsement of the Xen Project Advisory Board for joining the SIG at next Tuesday's board meeting. This will give an application (if needed) extra weight. I don't expect any issues. The other question I have is whether we do need to re-apply (http://wiki.centos.org/SpecialInterestGroup lists Xen4CentOS as a SIG already) and what the format for an application would be other than posting to this list. Maybe we ought to look at the naming of the SIG and make it more generic to cover for future version changes in Xen as well as targeting CentOS versions beyond CentOS 7 (which ought to be a lot easier than CentOS 6 because we only need Xen and no custom kernel). Also, there would probably be practical issues on list naming, etc. (Xen4CentOS is merged with CentOS-virt from a list perspective). I don't have an issue with the status quo, but it may be cleaner for CentOS in the long run if there was a clear SIG to list mapping. Best Regards Lars

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VoIP SIG Hangout on Feb 13, 16:00 UTC
by Patrick Laimbock 08 Feb '14

08 Feb '14

Hi, The VoIP SIG Hangout has been rescheduled and will now take place on Feb 13 at 16:00 UTC [0]. For more information how to join the hangout on Google+ or follow it on Youtube please check http://wiki.centos.org/OfficeHours Nothing set in stone but some of the things open for discussion are the scope of the VoIP SIG, the goal, the target audience, the deliverables, content distribution and lets not forget the actual proposal. It's also helpful to get an industry perspective, how to make the production side easier and facilitate processes that improve the usability of CentOS in the VoIP sector. Best regards, Patrick Laimbock [0] http://www.timeanddate.com/worldclock/fixedtime.html?iso=20140213T16&am=30

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GSoC mentoring org application, and 14 Feb deadline [GSoC]
by Karsten Wade 08 Feb '14

08 Feb '14

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi: I'm in the mode of "perfect is enemy of good enough", so I'm going to send out a status right now before I keep waiting to get more done. :) A handful of people have offered some help, project ideas, and to be the co-/backup admin (an application requirement.) Thanks! Our main needs to complete our application are: * Ideas, ideas, ideas - SIGs take note! * A backup admin * Mentors (and teams) beginning to commit Please read on for current status on everything: ideas, mentors, office hours, backup admin, and students. == Ideas We need good ideas, and around one mentor for each idea. (It's OK if we have a few more ideas than mentors assigned right now, as long as the idea list is long enough. It's job is to give students ideas on what and how to write their proposals.) http://wiki.centos.org/GSoC/2014/Ideas If you have an idea, fill out the template, or email it to me. If you think it needs a bit of discussion first, you can start a thread for it on centos-devel. SIGs -- this is a great way to get work done toward your variant needs. Packaging, yum plugins, and so forth are all good approaches. It's fine (and encouraged) if the students' work ends up happening primarily in your upstream and we absorb the goodness in to CentOS Linux later. == Mentors You are needed, at least one for each student. You can represent a group, such as release engineering, QA, or a SIG. The rest of your group should be prepared to work with the students on proposals and the final project. == CentOS Office Hours We'll use the Monday CentOS Office Hours to talk about GSoC: http://wiki.centos.org/OfficeHours That's at 16:00 UTC on a Google Hangout and live on YouTube or via http://www.centos.org/media. At the moment it will be any of the Board members chatting about things, but we may have room for a few other voices if there is someone else we should include in the discussion. == Backup admin & administrivia I'm working the application details here: http://wiki.centos.org/GSoC/2014/Application We need a backup admin, it's mandatory for the application. I've heard from a few interested folks, please let me know if you are interested. I'd especially like to work with someone who hasn't administered GSoC before, so I can spread the knowledge. We can have more than one backup admin, but we definitely need one for the application. Since I'm so new to the community, I'm going to consult the rest of the Board members for who would make good co-/backup-admins. I'll try to get that figured out early next week, let's set Tuesday end-of-day in California for that. We also need some tags to associate with the project, such as: Linux, yum, RPM, packaging, OpenStack, Ceph, Python, etc. Suggestions welcome. == Students Your time to apply hasn't come yet. We need to be accepted as a mentoring org first. But it is a great thing when existing community members who are also students apply for the projects. I've seen quite a number of very good results from that - getting paid to spend the summer making CentOS Linux or the Project better! - - Karsten - -- Karsten 'quaid' Wade .^\ CentOS Doer of Stuff http://TheOpenSourceWay.org \ http://community.redhat.com @quaid (identi.ca/twitter/IRC) \v' gpg: AD0E0C41 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 Comment: Using GnuPG with Thunderbird - http://www.enigmail.net/ iEYEARECAAYFAlL1anYACgkQ2ZIOBq0ODEGgMgCglTM4oreC0DBOahsEc3iJ4jX9 o4AAoIw5ivDA8C99YRHnL4OH/ic7R/RX =/nEN -----END PGP SIGNATURE-----

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ClearCenter Marketplace for CentOS Variant
by David Loper 07 Feb '14

07 Feb '14

ClearCenter and ClearFoundation are interested in starting a CentOS variant called 'ClearCenter Marketplace for CentOS'. This will allow management of various CentOS services, EPEL packages, and third party applications to be easily managed and configured under CentOS. We are also interested in being part of a SIG centered around 'Server Management.' Please let us know the next steps. We'd like to get started right away and we are willing to participate in the process of helping to set up shop. Let us know how we can serve. -- David Loper President, ClearFoundation

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