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34753 discussions

LVM overhead? Does it cripple I/O?
by Smithies, Russell 19 Aug '12

19 Aug '12

For a high-performance system (64-cores, 512GB RAM, 5TB local disk, 110TB NFS-mounted storage) is there any advantage of dropping lvm and mounting partitions directly? We're not planning on changing partition sizes, but if we did we'd probably do a full rebuild. Has anyone done performance testing to show that lvm isn't crippling I/O? Thanx, Russell ======================================================================= Attention: The information contained in this message and/or attachments from AgResearch Limited is intended only for the persons or entities to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of, or taking of any action in reliance upon, this information by persons or entities other than the intended recipients is prohibited by AgResearch Limited. If you have received this message in error, please notify the sender immediately. =======================================================================

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CentOS with sssd and samba4
by Steve Thompson 18 Aug '12

18 Aug '12

If you are authenticating your CentOS 6 systems using sssd from a samba4 DC using GSSAPI, I'd like to hear from you. I have been able to get it to work using only cleartext passwords in sssd.conf, and of course I'd prefer to use GSSAPI. Steve

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DNS DoS attack
by Jussi Hirvi 17 Aug '12

17 Aug '12

Looks like one of my name servers (CentOS 5) gets a lot of malicious queries. The cpu load is constantly about 3 %. I put on stricter limits on who is allowed recursive queries, but this does not affect the CPU load. I also updated bind. I temporarily turned on querylog (command: rndc querylog), and noticed that I get over 200 queries like this per second: > Aug 17 07:41:38 mx2 named[6873]: client 205.145.64.200#53: query (cache) 'ripe.net/ANY/IN' denied > Aug 17 07:41:38 mx2 named[6873]: client 204.10.45.5#53: query (cache) 'ripe.net/ANY/IN' denied > Aug 17 07:41:38 mx2 named[6873]: client 78.40.35.212#53: query (cache) 'ripe.net/ANY/IN' denied > Aug 17 07:41:38 mx2 named[6873]: client 207.207.3.126#53: query (cache) 'ripe.net/ANY/IN' denied Are there any ways to mitigate this, or do I just have to wait? - Jussi

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stupid bash question
by Craig White 17 Aug '12

17 Aug '12

the relevant snippet is... NAME="*.mov" cd $IN if test -n "$(find . -maxdepth 1 -name $NAME -print -quit)" and if there is one file in this directory - ie test.mov, this works fine but if there are two (or more) files in this directory - test.mov, test2.mov then I get an error... find: paths must precede expression So my code is evidently wrong. I just want a test for 1 or more files ending in .mov in the directory? Any one want to toss me a bone here? -- Craig White ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ craig.white(a)ttiltd.com 1.800.869.6908 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ www.ttiassessments.com Need help communicating between generations at work to achieve your desired success? Let us help!

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Software RAID woes due to GRUB
by SilverTip257 16 Aug '12

16 Aug '12

Hello, I recently cloned an old install from one server chassis to another via rsync. The old setup only had one disk and the new one is set up with two disks in a softraid. I managed to solve the problem and thought I'd present it here to benefit others. attempting to add sda3 to md2 says: mdadm: hot add failed for /dev/sda3: Invalid argument dmesg says: md: could not bd_claim sda3. md: error, md_import_device() returned -16 Drive is not mounted or in use by the OS. SMART error logs do not indicate any disk failures. I can boot up to a rescue CD and the array assembles just fine. Go figure the old install used partition labels to determine the boot device. So GRUB grabbed the first disk /dev/sda, on which root was label "/" or device /dev/sda3. So GRUB kept /dev/sda3 busy so that mdadm couldn't add it to the array. Changing the root= device kernel param in grub.conf to the raid device md2 and re-rolling the initial ramdisk cleared up the problem. It boots fine and assembles a healthy softraid now. Maybe it's a stupid item to overlook, but it certainly gave me a head scratcher for a bit. Have a laugh ... I certainly did when things were up and running properly again. ---~~.~~--- Mike // SilverTip257 //

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libfget ported to CentOS 6.2?
by drichards＠globalcerts.net 16 Aug '12

16 Aug '12

Hi, I have used the library calls of an open source library called libfget, which I had running on Fedora 8. I am now trying to build it and run it on CentOS 6.2, but there are some problems. The original maintainer of that package is not currently available and I tried to post to that list but no one answered. I wonder if anyone here has needed to use this and had success in building and running it. There are bugs in the socket programming (getsock* calls and select()). I replaced gethostbyname_r with getaddrinfo, but I can't figure out why a select() call is failing. I am using the lastest version: fget-1.3.3.tar.gz (libfget.so). Thanks, Dirce

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Re: [CentOS] slowness with new kernel+nouveau?
by Marko Vojinovic 16 Aug '12

16 Aug '12

On Thursday, 16. August 2012. 16.34.01 Sorin Srbu wrote: > > -----Original Message----- > > From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On > > Behalf Of m.roth(a)5-cent.us > > Sent: den 16 augusti 2012 16:13 > > To: CentOS mailing list > > Subject: Re: [CentOS] slowness with new kernel+nouveau? > > > > >> I hear rumors that kmod-nvidia will be coming in RHEL soon, and so here > > >> to CentOS. > > > > > > Any source for the rumors? > > > > > > It'd be great though! > > > > It's in fc17. No it isn't. As long as nVidia drivers are closed source and proprietary, they will never be in Fedora. I wouldn't know about RHEL, though, they might decide whatever they want to do. However, some main Nouveau developers are employed by RH, so I wouldn't bet on RHEL importing nVidia drivers. HTH, :-) Marko

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Re: [CentOS] slowness with new kernel+nouveau?
by m.roth＠5-cent.us 16 Aug '12

16 Aug '12

Sorin Srbu wrote: >> -----Original Message----- >> From: centos-bounces(a)centos.org [mailto:centos-bounces@centos.org] On >> Behalf Of m.roth(a)5-cent.us >> Sent: den 16 augusti 2012 15:46 >> To: CentOS mailing list >> Subject: Re: [CentOS] slowness with new kernel+nouveau? >> >> I hear rumors that kmod-nvidia will be coming in RHEL soon, and so here >> to CentOS. > > Any source for the rumors? > > It'd be great though! It's in fc17. mark

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CentOS-announce Digest, Vol 90, Issue 10
by centos-announce-request＠centos.org 16 Aug '12

16 Aug '12

Send CentOS-announce mailing list submissions to centos-announce(a)centos.org To subscribe or unsubscribe via the World Wide Web, visit http://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. CEBA-2012:1172 CentOS 6 logrotate FASTTRACK Update (Johnny Hughes) 2. CEBA-2012:1171 CentOS 6 irssi FASTTRACK Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Wed, 15 Aug 2012 19:18:08 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2012:1172 CentOS 6 logrotate FASTTRACK Update To: centos-announce(a)centos.org Message-ID: <20120815191808.GA30659(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2012:1172 Upstream details at : https://rhn.redhat.com/errata/RHBA-2012-1172.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 2e76343fa539486086fe99352e89dab02372305d35c609408803547c93e91bbd logrotate-3.7.8-16.el6.i686.rpm x86_64: eb3a0fa3eeb7ba2e0891380384062bf226669b7b6e3e9ac52d00d07e3f1c2168 logrotate-3.7.8-16.el6.x86_64.rpm Source: 45f248b1bb65b1f19b7c8a72fd8f373a3c1cfd722595c71e59b33ed0935ef994 logrotate-3.7.8-16.el6.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 2 Date: Wed, 15 Aug 2012 19:18:19 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2012:1171 CentOS 6 irssi FASTTRACK Update To: centos-announce(a)centos.org Message-ID: <20120815191819.GA30741(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2012:1171 Upstream details at : https://rhn.redhat.com/errata/RHBA-2012-1171.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 6b34a3f029d0ff58c1f70c0f1a12dec459571f9726582e513946d3872b983605 irssi-0.8.15-5.el6.i686.rpm 4836c0744e2c1276075e949d4b64ac102f4b4f56d3ef5262f4a43505ca35ef15 irssi-devel-0.8.15-5.el6.i686.rpm x86_64: 34c892733fc7203444895c752888c46a8124d265aebf5659029798d05dfc1519 irssi-0.8.15-5.el6.x86_64.rpm 4836c0744e2c1276075e949d4b64ac102f4b4f56d3ef5262f4a43505ca35ef15 irssi-devel-0.8.15-5.el6.i686.rpm 943909519cd9d7bb04accbf80af57f04878840954f36a9870ceb7e3281b2291a irssi-devel-0.8.15-5.el6.x86_64.rpm Source: 1593586f0d94f7f6d818a272540a2924eeb17b721fc71f51fcd512ae0eb86c74 irssi-0.8.15-5.el6.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ _______________________________________________ CentOS-announce mailing list CentOS-announce(a)centos.org http://lists.centos.org/mailman/listinfo/centos-announce End of CentOS-announce Digest, Vol 90, Issue 10 ***********************************************

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copy/paste centos 6
by Jerry Geis 16 Aug '12

16 Aug '12

I had to update all these packages on CentOS 6 for a project. Everything works great on CentOS 6 - except - Copy/Paste between applications. Anyone - know which application below might control that function? Example I cannot have firefox running and copy and paste text into thunderbird. Both applications - actually all applications work - I just cant copy/paste. I'm thinking I did not correctly compile one of the applications below - or did not satisfy a dependency. I am just trying to narrow it down. Any one have insight into this? Thanks - Jerry atk-1.32.0.tar.gz autoconf-2.68.tar.gz cairo-1.10.0.tar.gz dbus-glib-0.92.tar.gz flex-2.5.35.tar.gz fontconfig-2.8.0.tar.gz gdk-pixbuf-2.22.1.tar.gz gettext-0.18.1.1.tar.gz glib-2.27.5.tar.gz gmime-2.5.4.tar.gz gnome-desktop-2.32.1.tar.bz2 gnome-icon-theme-2.31.0.tar.bz2 gnome-vfs-2.24.4.tar.gz gnutls-2.10.4.tar.bz2 gst-plugins-bad-0.10.23.tar.gz gst-plugins-base-0.10.36.tar.gz gst-plugins-good-0.10.31.tar.gz gst-plugins-ugly-0.10.19.tar.gz gstreamer-0.10.36.tar.gz gst-rtsp-server-0.10.8.tar.bz2 gtk+-2.23.3.tar.gz gtk-doc-1.15.tar.gz gtk-engines-2.20.2.tar.gz intltool-0.40.6.tar.gz libogg-1.1.4.tar.gz liboil-0.3.17.tar.gz libpng-1.4.4.tar.gz libproxy-0.2.3.tar.bz2 libsoup-2.32.2.tar.gz libtheora-1.1.1.tar.bz2 libtool-2.4.tar.gz libunique-1.1.6.tar.gz libvorbis-1.2.3.tar.gz m4-1.4.15.tar.gz metacity-2.34.0.tar.gz orc-0.4.11.tar.gz pango-1.28.3.tar.gz pixman-0.21.2.tar.gz shared-mime-info-0.90.tar.bz2 totem-2.30.2.tar.gz totem-pl-parser-2.32.1.tar.gz xvidcore-1.2.2.tar.gz

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