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SCL devtoolset-3 or 4 without eclipse?
by Robert Arkiletian 05 Dec '16

05 Dec '16

Is there a way to install devtoolset packages without the bloat of eclipse? I just want the new compiler and toolchain, not a big IDE. BTW devtoolset-3 dependencies are broken in yum with C6 yum install devtoolset-3 ... ---> Package devtoolset-3-perftools.x86_64 0:3.1-12.el6 will be installed --> Processing Dependency: devtoolset-3-dyninst for package: devtoolset-3-perftools-3.1-12.el6.x86_64 --> Finished Dependency Resolution Error: Package: 1:devtoolset-3-eclipse-platform-4.4.2-4.bootstrap2.el6.x86_64 (centos-sclo-rh) Requires: devtoolset-3-eclipse-emf-core >= 1:2.10.2-2 Error: Package: devtoolset-3-ide-3.1-12.el6.x86_64 (centos-sclo-rh) Requires: devtoolset-3-eclipse-emf Error: Package: devtoolset-3-ide-3.1-12.el6.x86_64 (centos-sclo-rh) Requires: devtoolset-3-eclipse-emf-sdk Error: Package: devtoolset-3-perftools-3.1-12.el6.x86_64 (centos-sclo-rh) Requires: devtoolset-3-dyninst Error: Package: devtoolset-3-ide-3.1-12.el6.x86_64 (centos-sclo-rh) Requires: devtoolset-3-eclipse-emf-examples Error: Package: 1:devtoolset-3-eclipse-platform-4.4.2-4.bootstrap2.el6.x86_64 (centos-sclo-rh) Requires: devtoolset-3-eclipse-ecf-core >= 3.9.1-2.5 Error: Package: devtoolset-3-ide-3.1-12.el6.x86_64 (centos-sclo-rh) Requires: devtoolset-3-eclipse-emf-core Error: Package: devtoolset-3-eclipse-mylyn-builds-3.14.2-1.bootstrap1.el6.noarch (centos-sclo-rh) Requires: devtoolset-3-eclipse-emf You could try using --skip-broken to work around the problem You could try running: rpm -Va --nofiles --nodigest

3 3

CentOS ISO Build process
by Olivier BONHOMME 05 Dec '16

05 Dec '16

Hello the list, For a personal use, I would be intersted in creating my own custom CentOS ISO. For that, I would love to use the build process used for the the official ISOs generation. Is the documentation about this release process and the relative tools and configuration files are available and public for CentOS 7 ? If yes, where is it possible to find them ? I found data on seven.centos.org and livecd-tools but I'm not sure if it is the real used process. Thanks for your answers Regards, Olivier Bonhomme

2 1

Huge write amplification with thin provisioned logical volumes
by Radu Radutiu 05 Dec '16

05 Dec '16

Hi, I've noticed huge write amplification problem with thinly provisioned logical volumes and I wondered if anyone can explain why it happens and if and how can be fixed. The behavior is the same on Centos 6.8 and Centos 7.2. I have a NVME card (Intel DC P3600 -2 TB) on which I create a thinly provisioned logical volume: pvcreate /dev/nvme0n1 vgcreate vgg /dev/nvme0n1 lvcreate -l100%FREE -T vgg/thinpool lvcreate -V40000M -T vgg/thinpool -n brick1 mkfs.xfs /dev/vgg/brick1 If I run a write test ( dd if=/dev/zero of=./zero.img bs=4k count=100000 oflag=dsync ) I see in iotop that the actual disk write is 30 times the amount of data that I'm actually writing to disk). Total DISK READ: 0.00 B/s | Total DISK WRITE: 1001.23 M/s TIME TID PRIO USER DISK READ DISK WRITE SWAPIN IO COMMAND 10:59:53 34453 be/4 root 0.00 B/s 30.34 M/s 0.00 % 12.10 % dd if=/dev/zero of=./zero.img bs=4k count=100000 oflag=dsync Total DISK READ: 0.00 B/s | Total DISK WRITE: 991.92 M/s TIME TID PRIO USER DISK READ DISK WRITE SWAPIN IO COMMAND 10:59:54 34453 be/4 root 0.00 B/s 30.05 M/s 0.00 % 12.63 % dd if=/dev/zero of=./zero.img bs=4k count=100000 oflag=dsync Total DISK READ: 0.00 B/s | Total DISK WRITE: 1024.52 M/s TIME TID PRIO USER DISK READ DISK WRITE SWAPIN IO COMMAND 10:59:55 34453 be/4 root 0.00 B/s 31.05 M/s 0.00 % 12.49 % dd if=/dev/zero of=./zero.img bs=4k count=100000 oflag=dsync 10:59:55 1057 be/3 root 0.00 B/s 15.39 K/s 0.00 % 0.01 % [jbd2/sda1-8] Total DISK READ: 0.00 B/s | Total DISK WRITE: 967.60 M/s TIME TID PRIO USER DISK READ DISK WRITE SWAPIN IO COMMAND 10:59:56 34453 be/4 root 0.00 B/s 29.32 M/s 0.00 % 12.75 % dd if=/dev/zero of=./zero.img bs=4k count=100000 oflag=dsync Total DISK READ: 0.00 B/s | Total DISK WRITE: 943.66 M/s TIME TID PRIO USER DISK READ DISK WRITE SWAPIN IO COMMAND 10:59:58 34453 be/4 root 0.00 B/s 28.60 M/s 0.00 % 11.79 % dd if=/dev/zero of=./zero.img bs=4k count=100000 oflag=dsync 10:59:58 34448 be/4 root 0.00 B/s 3.84 K/s 0.00 % 0.00 % python /usr/sbin/iotop -o -b -t Total DISK READ: 0.00 B/s | Total DISK WRITE: 959.40 M/s TIME TID PRIO USER DISK READ DISK WRITE SWAPIN IO COMMAND 10:59:59 34453 be/4 root 0.00 B/s 29.07 M/s 0.00 % 11.81 % dd if=/dev/zero of=./zero.img bs=4k count=100000 oflag=dsync Total DISK READ: 0.00 B/s | Total DISK WRITE: 948.38 M/s TIME TID PRIO USER DISK READ DISK WRITE SWAPIN IO COMMAND 11:00:00 34453 be/4 root 0.00 B/s 28.73 M/s 0.00 % 11.57 % dd if=/dev/zero of=./zero.img bs=4k count=100000 oflag=dsync For a 30MB/s write at the application level I get around 1000MB/s write at the device level, i.e. a 33x amplification. On Centos 6 if I try to align the data using the values from https://gluster.readthedocs.io/en/latest/Administrator%20Guide/Setting%20Up… I get only a 7x amplification. On Cetos 7 I can see the same 7x amplification using the default lvcreate options. This is the Centos 7 iotop output: 12:48:29 Total DISK READ : 0.00 B/s | Total DISK WRITE : 32.24 M/s 12:48:29 Actual DISK READ: 0.00 B/s | Actual DISK WRITE: 226.63 M/s TIME TID PRIO USER DISK READ DISK WRITE SWAPIN IO COMMAND 12:48:29 15234 be/3 root 0.00 B/s 3.80 K/s 0.00 % 35.20 % [jbd2/dm-8-8] 12:48:29 15258 be/4 root 0.00 B/s 32.24 M/s 0.00 % 10.64 % dd if=/dev/zero of=./zero.img bs=4k count=100000 oflag=dsync 12:48:29 14870 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.05 % [kworker/u80:1] 12:48:29 15240 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.03 % [kworker/u80:2] 12:48:29 15255 be/4 root 0.00 B/s 3.80 K/s 0.00 % 0.00 % python /usr/sbin/iotop -o -b -t 12:48:30 Total DISK READ : 0.00 B/s | Total DISK WRITE : 31.97 M/s 12:48:30 Actual DISK READ: 0.00 B/s | Actual DISK WRITE: 224.85 M/s TIME TID PRIO USER DISK READ DISK WRITE SWAPIN IO COMMAND 12:48:30 15234 be/3 root 0.00 B/s 0.00 B/s 0.00 % 35.14 % [jbd2/dm-8-8] 12:48:30 15258 be/4 root 0.00 B/s 31.97 M/s 0.00 % 10.61 % dd if=/dev/zero of=./zero.img bs=4k count=100000 oflag=dsync 12:48:30 14870 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.05 % [kworker/u80:1] 12:48:30 15240 be/4 root 0.00 B/s 0.00 B/s 0.00 % 0.03 % [kworker/u80:2] 12:48:31 Total DISK READ : 0.00 B/s | Total DISK WRITE : 32.50 M/s 12:48:31 Actual DISK READ: 0.00 B/s | Actual DISK WRITE: 228.94 M/s TIME TID PRIO USER DISK READ DISK WRITE SWAPIN IO COMMAND 12:48:31 15234 be/3 root 0.00 B/s 0.00 B/s 0.00 % 35.28 % [jbd2/dm-8-8] 12:48:31 15258 be/4 root 0.00 B/s 32.48 M/s 0.00 % 10.72 % dd if=/dev/zero of=./zero.img bs=4k count=100000 oflag=dsync Still 7x write amplifications seems too much. Has anyone seen this or has any explanation for it? I am rewriting the same file with dd multiple times so the filesystem and thin lvm should use already provisioned space. Best regards, Radu

1 0

CentOS6: devhelp search misses most of GTK+ 2 API functions
by wwp 05 Dec '16

05 Dec '16

Hello there, a long-standing issue I have here and that I'm decided to get rid of now: in the devhelp, most of the GTK+ functions are not found by the search tab: it will find gtk_icon fonctions but no gtk_widget or gtk_color_button, gtk_label etc. Also, it will find GtkVbox item but no gtk_vbox_new, GtkWidget but no gtk_widget function, for instance. The docs are there (gtk-doc, gtk2-devel-docs), since I can find all those API elements by browsing the GTK+ 2 Reference Manual from the Contents tab. Is this really how it should be? Regards, -- wwp

1 0

CentOS-announce Digest, Vol 142, Issue 2
by centos-announce-request＠centos.org 04 Dec '16

04 Dec '16

1 0

CentOS 7, PS-2 moose
by m.roth＠5-cent.us 02 Dec '16

02 Dec '16

I just built a workstation, CentOS 7, fully updated. My user requires his three-button mouse, telling me that imaging software is written for three-button mice (so *please* don't tell me to tell him to get a new mouse). Anyway, no cursor. In both /var/log/messages and journalctl, I see "unable to enable mouse". What I read in messages and manpages is that PS-2 is default standard... anyone have any ideas? I need to resolve this asap... so I can get onto making sure his research imaging software running on CentOS 7. mark

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I'm still there ... test builds on private server (drivers, mesa, fixes)
by Andreas Benzler 02 Dec '16

02 Dec '16

Hello Guys, I'm still allive, but humbled by real lifetime. My personal test stuff moved out to a new server, with more harddrive space. http://www.centos.cms4all.org/ Repo http://centos.cms4all.org/repo/7/ My HP Notebook got some bios problem. I got a new machine with updated processor. That's why I upgrade my repo. Drivers: xorg-x11-drv-intel-2.99.917-20.20161118.el7.centos.src.rpm (More stable on intel p520 against the old HP with intel 5500 installation - got video glitches before). nouveau 1.0.13 ati 7.8 amdgpu 1.20 libva-intel-driver 1.73 libva 1.73 libdrm2.4.74 Mesa: mesa 13.0.2 + llvm 3.8 Kernel: Vanilla kernel-4.8.11 - feel very difficult with it, because of harddrives..hm I will see. Wine: wine-1.8.5 (still need to update requirements) wine-stage 1.9.23 (compiled with my drivers and mesa repo) - gallium 9 + staging + steam - update requirements - Tested: World of Warcraft, Gildwars 2, Tera - HD 6870 , HD 6970 with gallium. intel p520 performce slower, but works. winetricks Other: gimp 2.8.18 (table release) Media: Makemkv 1.10.2 That's it for no. PS: My packages are not signed as always - private work state.

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CentOS-announce Digest, Vol 142, Issue 1
by centos-announce-request＠centos.org 02 Dec '16

02 Dec '16

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit https://lists.centos.org/mailman/listinfo/centos-announce or, via email, send a message with subject or body 'help' to centos-announce-request(a)centos.org You can reach the person managing the list at centos-announce-owner(a)centos.org When replying, please edit your Subject line so it is more specific than "Re: Contents of CentOS-announce digest..." Today's Topics: 1. CESA-2016:2825 Important CentOS 5 thunderbird Security Update (Johnny Hughes) 2. CEEA-2016:2832 CentOS 5 tzdata Enhancement Update (Johnny Hughes) 3. CESA-2016:2825 Important CentOS 6 thunderbird Security Update (Johnny Hughes) 4. CEEA-2016:2832 CentOS 6 tzdata Enhancement Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Thu, 1 Dec 2016 15:29:44 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2016:2825 Important CentOS 5 thunderbird Security Update Message-ID: <20161201152944.GA4788(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2016:2825 Important Upstream details at : https://rhn.redhat.com/errata/RHSA-2016-2825.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 7251f6beb26fcb00598415eeaf517c73782cd93d61546cae8fee4d0f7a4071b6 thunderbird-45.5.0-1.el5.centos.i386.rpm x86_64: b37fd2b77f5597775d8ad56a518b5fb35ab1c09c03b731817edd56c4a65a6e6b thunderbird-45.5.0-1.el5.centos.x86_64.rpm Source: 89b0a355885d6a9c753eb36af7e2c58ff3fb1c05c72438af2be24f3b35f65065 thunderbird-45.5.0-1.el5.centos.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: JohnnyCentOS ------------------------------ Message: 2 Date: Thu, 1 Dec 2016 15:30:23 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CEEA-2016:2832 CentOS 5 tzdata Enhancement Update Message-ID: <20161201153023.GA4907(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Enhancement Advisory 2016:2832 Upstream details at : https://rhn.redhat.com/errata/RHEA-2016-2832.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: e11c441014d2a46d7e85ed4db026fbc2f9c0e008ad89c402696589db3f4893b0 tzdata-2016j-1.el5.i386.rpm 62b80a842298ca82ca815f649f3cb0a675d6544a77fa14756e6c15db2f7c9e50 tzdata-java-2016j-1.el5.i386.rpm x86_64: bcdcca7cbdc90b6d128d9f908e67159bff74b7bcd63c3245f00d6cd6593f56f1 tzdata-2016j-1.el5.x86_64.rpm d38f22fd31f06b46012a47af034aa6098af98e59f9da9665e5047b324025f2b9 tzdata-java-2016j-1.el5.x86_64.rpm Source: f6f785b3ba7f4d1b9d4799d417976f839ec553efaf7fdf5bd728f0fd40fb979a tzdata-2016j-1.el5.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: JohnnyCentOS ------------------------------ Message: 3 Date: Thu, 1 Dec 2016 15:43:25 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2016:2825 Important CentOS 6 thunderbird Security Update Message-ID: <20161201154325.GA20411(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2016:2825 Important Upstream details at : https://rhn.redhat.com/errata/RHSA-2016-2825.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: b21002cf325311197b191b5b530f685a6501df24390836e0f2b82a0bfdb11258 thunderbird-45.5.0-1.el6.centos.i686.rpm x86_64: 3e0df1347b13bbdbbe0e7563dd7a84bcd6c6818925b53393448e13128a359562 thunderbird-45.5.0-1.el6.centos.x86_64.rpm Source: dea7ceb00bc57fb4c1ff6e8d7f6d9e3acc6852d4d4b29355d2bb1de300452532 thunderbird-45.5.0-1.el6.centos.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Message: 4 Date: Thu, 1 Dec 2016 15:44:02 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CEEA-2016:2832 CentOS 6 tzdata Enhancement Update Message-ID: <20161201154402.GA20621(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Enhancement Advisory 2016:2832 Upstream details at : https://rhn.redhat.com/errata/RHEA-2016-2832.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 94711daa2f7540f86e4313316646551596431c259771937c3331430bfd5fb6c8 tzdata-2016j-1.el6.noarch.rpm c3592026ffc22a0209ed8c694f6d61c3e8ab9bf7b11c8c4f3e940890ab9f443a tzdata-java-2016j-1.el6.noarch.rpm x86_64: 94711daa2f7540f86e4313316646551596431c259771937c3331430bfd5fb6c8 tzdata-2016j-1.el6.noarch.rpm c3592026ffc22a0209ed8c694f6d61c3e8ab9bf7b11c8c4f3e940890ab9f443a tzdata-java-2016j-1.el6.noarch.rpm Source: 269fcb2024cf95221b18ddaface194532539927534eb88a872a0c08bb27a8ad9 tzdata-2016j-1.el6.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net Twitter: @JohnnyCentOS ------------------------------ Subject: Digest Footer _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org https://lists.centos.org/mailman/listinfo/centos-announce ------------------------------ End of CentOS-announce Digest, Vol 142, Issue 1 ***********************************************

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CentOS 6: environment variables and cronjobs ...
by Walter H. 02 Dec '16

02 Dec '16

Hello, in /etc/cron.d/test I've this: 50 15 * * * root ( date ; echo "---" ; env ; echo "---" ; set ) >>/tmp/test.txt and I thought I would be shown environment variables which are defined in e.g. /etc/profiles.d/proxy.sh or /etc/profiles.d/proxy.csh but this isn't like this ... where do I have to define e.g. export http_proxy="http://proxy.local:3128/" in order to have it in cron jobs? Thanks, Walter

3 2

CentOS 7 Update from DVD
by Jerry Geis 01 Dec '16

01 Dec '16

I am trying to find how to update CentOS 7 using the DVD. In the past, C6, just insert the DVD, select "install or update" from the boot menu, continue, and later select update and continue... done... reboot. I dont see that on the C7 boot disk. How is that accomplished? Thanks, Jerry

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