Discuss November 2011

discuss@lists.centos.org

208 participants
157 discussions

SSD diagnostics / test suite?
by Alan McKay 24 Nov '11

24 Nov '11

Hey folks, I looked back through the list archives and there are surprisingly few threads with "SSD" in the subject. In my new job I've been handed over a number of things that were outstanding with the previous Sys Admin, and one of them was an SSD that was suspect. I just plugged it into a diagnostics laptop to use the Linux Smart software to check it - and it all seems fine even after running the disk test suite from the GUI. In digging for more info I discovered that the errors were actually coming from the RAID controller - and the SSD has obviously been removed from there for the time being. While I have it in my hands I'd like to do some kind of complete test / diagnostics suite on it. Preferably Linux based since that's what we have here. I found a few windows-based tools with my googling. I did stumble upon this page which looks like it has a few useful tips for using SSDs on Linux http://danweinreb.org/blog/using-solid-state-disks-on-linux Now, what about comprehensive suites? Should I just run some IO suites on it like bonnie++ or something like that, and see what SMART says in the process? I'm suspecting the RAID controller at this point ... but want to be as thorough as possible while I have it in my hands. cheers, -Alan -- “Don't eat anything you've ever seen advertised on TV” - Michael Pollan, author of "In Defense of Food"

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Problem with gdb or maybe gcc
by John J. Boyer 24 Nov '11

24 Nov '11

I have CentOS 5.7. Before the last updates, when I ran gdb with a program name gave a breakpoint and then typed run it would stop on that breakpoint. Now it prints the message "Warning: no loadable sections in added symbol file." It then just runs the program without stopping. What could have changed? Are there some flags that need to be set when invoking gcc? Thanks, John -- John J. Boyer; President, Chief Software Developer Abilitiessoft, Inc. http://www.abilitiessoft.com Madison, Wisconsin USA Developing software for people with disabilities

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Corosync init-script broken on CentOS6
by Hal Martin 23 Nov '11

23 Nov '11

Hello all, I am trying to create a corosync/pacemaker cluster using CentOS 6.0. However, I'm having a great deal of difficulty doing so. Corosync has a valid configuration file and an authkey has been generated. When I run /etc/init.d/corosync I see that only corosync is started. >From experience working with corosync/pacemaker before, I know that this is not enough to have a functioning cluster. For some reason the base install (with or without updates) is not starting corosync dependencies. I've even tried using corosync/pacemaker for the EPEL 6 repo, and still the init-script will not start corosync dependencies. Expected: corosync /usr/lib64/heartbeat/stonithd /usr/lib64/heartbeat/cib /usr/lib64/heartbeat/lrmd /usr/lib64/heartbeat/attrd /usr/lib64/heartbeat/pengine Observed: corosync My install options are: %packages @base @core @ha @nfs-file-server @network-file-system-client @resilient-storage @server-platform @server-policy @storage-client-multipath @system-admin-tools pax oddjob sgpio pacemaker dlm-pcmk screen lsscsi -rgmanager %end The logs from the server aren't terribly helpful either: Nov 23 12:13:45 cheapo4 corosync[2509]: [pcmk ] info: spawn_child: Forked child 2515 for process stonith-ng Nov 23 12:13:45 cheapo4 corosync[2509]: [pcmk ] info: spawn_child: Forked child 2516 for process cib Nov 23 12:13:45 cheapo4 corosync[2509]: [pcmk ] info: spawn_child: Forked child 2517 for process lrmd Nov 23 12:13:45 cheapo4 corosync[2509]: [pcmk ] info: spawn_child: Forked child 2518 for process attrd Nov 23 12:13:45 cheapo4 corosync[2509]: [pcmk ] info: spawn_child: Forked child 2519 for process pengine Nov 23 12:13:45 cheapo4 corosync[2509]: [pcmk ] info: spawn_child: Forked child 2520 for process crmd Nov 23 12:13:45 cheapo4 corosync[2509]: [SERV ] Service engine loaded: Pacemaker Cluster Manager 1.1.2 Nov 23 12:13:45 cheapo4 corosync[2509]: [SERV ] Service engine loaded: corosync extended virtual synchrony service Nov 23 12:13:45 cheapo4 corosync[2509]: [SERV ] Service engine loaded: corosync configuration service Nov 23 12:13:45 cheapo4 corosync[2509]: [SERV ] Service engine loaded: corosync cluster closed process group service v1.01 Nov 23 12:13:45 cheapo4 corosync[2509]: [SERV ] Service engine loaded: corosync cluster config database access v1.01 Nov 23 12:13:45 cheapo4 corosync[2509]: [SERV ] Service engine loaded: corosync profile loading service Nov 23 12:13:45 cheapo4 corosync[2509]: [SERV ] Service engine loaded: corosync cluster quorum service v0.1 Nov 23 12:13:45 cheapo4 corosync[2509]: [MAIN ] Compatibility mode set to whitetank. Using V1 and V2 of the synchronization engine. Nov 23 12:13:46 cheapo4 corosync[2509]: [pcmk ] ERROR: pcmk_wait_dispatch: Child process lrmd exited (pid=2517, rc=100) Nov 23 12:13:46 cheapo4 corosync[2509]: [pcmk ] notice: pcmk_wait_dispatch: Child process lrmd no longer wishes to be respawned Nov 23 12:13:46 cheapo4 corosync[2509]: [pcmk ] info: update_member: Node cheapo4.jrz.cbn now has process list: 00000000000000000000000000111302 (1118978) Nov 23 12:13:46 cheapo4 corosync[2509]: [pcmk ] ERROR: pcmk_wait_dispatch: Child process cib exited (pid=2516, rc=100) Nov 23 12:13:46 cheapo4 corosync[2509]: [pcmk ] notice: pcmk_wait_dispatch: Child process cib no longer wishes to be respawned Nov 23 12:13:46 cheapo4 corosync[2509]: [pcmk ] info: update_member: Node cheapo4.jrz.cbn now has process list: 00000000000000000000000000111202 (1118722) Nov 23 12:13:46 cheapo4 corosync[2509]: [pcmk ] ERROR: pcmk_wait_dispatch: Child process crmd exited (pid=2520, rc=100) Nov 23 12:13:46 cheapo4 corosync[2509]: [pcmk ] notice: pcmk_wait_dispatch: Child process crmd no longer wishes to be respawned Nov 23 12:13:46 cheapo4 corosync[2509]: [pcmk ] info: update_member: Node cheapo4.jrz.cbn now has process list: 00000000000000000000000000111002 (1118210) Nov 23 12:13:46 cheapo4 corosync[2509]: [pcmk ] ERROR: pcmk_wait_dispatch: Child process attrd exited (pid=2518, rc=100) Nov 23 12:13:46 cheapo4 corosync[2509]: [pcmk ] notice: pcmk_wait_dispatch: Child process attrd no longer wishes to be respawned Nov 23 12:13:46 cheapo4 corosync[2509]: [pcmk ] info: update_member: Node cheapo4.jrz.cbn now has process list: 00000000000000000000000000110002 (1114114) Nov 23 12:13:46 cheapo4 corosync[2509]: [pcmk ] ERROR: pcmk_wait_dispatch: Child process pengine exited (pid=2519, rc=100) Nov 23 12:13:46 cheapo4 corosync[2509]: [pcmk ] notice: pcmk_wait_dispatch: Child process pengine no longer wishes to be respawned Nov 23 12:13:46 cheapo4 corosync[2509]: [pcmk ] info: update_member: Node cheapo4.jrz.cbn now has process list: 00000000000000000000000000100002 (1048578) Nov 23 12:13:46 cheapo4 corosync[2509]: [pcmk ] ERROR: pcmk_wait_dispatch: Child process stonith-ng exited (pid=2515, rc=100) Nov 23 12:13:46 cheapo4 corosync[2509]: [pcmk ] notice: pcmk_wait_dispatch: Child process stonith-ng no longer wishes to be respawned Nov 23 12:13:46 cheapo4 corosync[2509]: [pcmk ] info: update_member: Node cheapo4.jrz.cbn now has process list: 00000000000000000000000000000002 (2) Googling suggests this is the result of mis-matched versions of pacemaker/corosync; but this is the base install and the problem persists even when I install it from EPEL6 repos. Is anyone else experiencing difficulties with corosync/pacemaker on CentOS6? Thanks, -Hal

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CentOS-announce Digest, Vol 81, Issue 11
by centos-announce-request＠centos.org 23 Nov '11

23 Nov '11

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CentOS-announce Digest, Vol 81, Issue 10
by centos-announce-request＠centos.org 22 Nov '11

22 Nov '11

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-2011:1468 CentOS 5 i386 less FASTTRACK Update (Johnny Hughes) 2. CEBA-2011:1468 CentOS 5 x86_64 less FASTTRACK Update (Johnny Hughes) 3. CEBA-2011:1467 CentOS 5 i386 openmotif22 FASTTRACK Update (Johnny Hughes) 4. CEBA-2011:1467 CentOS 5 x86_64 openmotif22 FASTTRACK Update (Johnny Hughes) 5. CEBA-2011:1472 CentOS 5 i386 libexif Update (Johnny Hughes) 6. CEBA-2011:1472 CentOS 5 x86_64 libexif Update (Johnny Hughes) 7. CEBA-2011:1473 CentOS 5 i386 ltrace Update (Johnny Hughes) 8. CEBA-2011:1473 CentOS 5 x86_64 ltrace Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Tue, 22 Nov 2011 12:18:35 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2011:1468 CentOS 5 i386 less FASTTRACK Update To: centos-announce(a)centos.org Message-ID: <20111122121835.GA21417(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2011:1468 Upstream details at : http://rhn.redhat.com/errata/RHBA-2011-1468.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) i386: bae7808d9b2a90d53e658d614187258a less-436-9.el5.i386.rpm Source: c7b39a69698ac8a65284222c7cdc8cf8 less-436-9.el5.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 2 Date: Tue, 22 Nov 2011 12:18:35 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2011:1468 CentOS 5 x86_64 less FASTTRACK Update To: centos-announce(a)centos.org Message-ID: <20111122121835.GA21431(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2011:1468 Upstream details at : http://rhn.redhat.com/errata/RHBA-2011-1468.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) x86_64: 077645fd9d1eb7f004275c45b65f22e2 less-436-9.el5.x86_64.rpm Source: c7b39a69698ac8a65284222c7cdc8cf8 less-436-9.el5.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 3 Date: Tue, 22 Nov 2011 12:54:05 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2011:1467 CentOS 5 i386 openmotif22 FASTTRACK Update To: centos-announce(a)centos.org Message-ID: <20111122125405.GA23514(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2011:1467 Upstream details at : http://rhn.redhat.com/errata/RHBA-2011-1467.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) i386: 7747b0c0acfac48218dc9d782a3f0a05 openmotif22-2.2.3-20.i386.rpm Source: e72a0b428c49a37535d1ac8b0e1e961b openmotif22-2.2.3-20.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 4 Date: Tue, 22 Nov 2011 12:54:05 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2011:1467 CentOS 5 x86_64 openmotif22 FASTTRACK Update To: centos-announce(a)centos.org Message-ID: <20111122125405.GA23530(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2011:1467 Upstream details at : http://rhn.redhat.com/errata/RHBA-2011-1467.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) x86_64: 7747b0c0acfac48218dc9d782a3f0a05 openmotif22-2.2.3-20.i386.rpm 02e205f0d612a57b123bfb2f91c31cbb openmotif22-2.2.3-20.x86_64.rpm Source: e72a0b428c49a37535d1ac8b0e1e961b openmotif22-2.2.3-20.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 5 Date: Tue, 22 Nov 2011 12:56:37 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2011:1472 CentOS 5 i386 libexif Update To: centos-announce(a)centos.org Message-ID: <20111122125637.GA23640(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2011:1472 Upstream details at : https://rhn.redhat.com/errata/RHBA-2011-1472.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) i386: d77b6a3643892456cc72a65fa913d8fa libexif-0.6.20-1.el5_7.1.i386.rpm 87befc55b3b59c80fdf084732e1b127d libexif-devel-0.6.20-1.el5_7.1.i386.rpm Source: d1b4ebae04123b41a37089d49309ee4c libexif-0.6.20-1.el5_7.1.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 6 Date: Tue, 22 Nov 2011 12:56:37 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2011:1472 CentOS 5 x86_64 libexif Update To: centos-announce(a)centos.org Message-ID: <20111122125637.GA23655(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2011:1472 Upstream details at : https://rhn.redhat.com/errata/RHBA-2011-1472.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) x86_64: d77b6a3643892456cc72a65fa913d8fa libexif-0.6.20-1.el5_7.1.i386.rpm a035440a320f39c332b4d438575ba6e6 libexif-0.6.20-1.el5_7.1.x86_64.rpm 87befc55b3b59c80fdf084732e1b127d libexif-devel-0.6.20-1.el5_7.1.i386.rpm 63387c7721766d48282235273cdc1aad libexif-devel-0.6.20-1.el5_7.1.x86_64.rpm Source: d1b4ebae04123b41a37089d49309ee4c libexif-0.6.20-1.el5_7.1.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 7 Date: Tue, 22 Nov 2011 12:58:47 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2011:1473 CentOS 5 i386 ltrace Update To: centos-announce(a)centos.org Message-ID: <20111122125847.GA23773(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2011:1473 Upstream details at : https://rhn.redhat.com/errata/RHBA-2011-1473.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) i386: 0be35fe0be137cc50e85ea7a7dd54c81 ltrace-0.5-13.45svn.el5_7.12.i386.rpm Source: 131670cc094d3b8baefcb93cdb99b418 ltrace-0.5-13.45svn.el5_7.12.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 8 Date: Tue, 22 Nov 2011 12:58:47 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2011:1473 CentOS 5 x86_64 ltrace Update To: centos-announce(a)centos.org Message-ID: <20111122125847.GA23786(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2011:1473 Upstream details at : https://rhn.redhat.com/errata/RHBA-2011-1473.html The following updated files have been uploaded and are currently syncing to the mirrors: ( md5sum Filename ) x86_64: 84cb434c37124ab3a45c003b0f2182f2 ltrace-0.5-13.45svn.el5_7.12.x86_64.rpm Source: 131670cc094d3b8baefcb93cdb99b418 ltrace-0.5-13.45svn.el5_7.12.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 81, Issue 10 ***********************************************

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bind slave sync takes long
by Götz Reinicke 22 Nov '11

22 Nov '11

Hi, I do have two DNS servers running bind 9.7.3. One master, one slave. If I add/update a record on the master, it takes up to more or less 20 hours until that change is transferred to the slave. That is a long time for me :-) May be I got some settings wrong which would sync much faster ... ? What could be wrong? What might I check? Thanks for any suggestion and hint! Regards . Götz -- Götz Reinicke IT-Koordinator Tel. +49 7141 969 420 Fax +49 7141 969 55 420 E-Mail goetz.reinicke(a)filmakademie.de Filmakademie Baden-Württemberg GmbH Akademiehof 10 71638 Ludwigsburg www.filmakademie.de Eintragung Amtsgericht Stuttgart HRB 205016 Vorsitzender des Aufsichtsrats: Jürgen Walter MdL Staatssekretär im Ministerium für Wissenschaft, Forschung und Kunst Baden-Württemberg Geschäftsführer: Prof. Thomas Schadt

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Re: [CentOS] bind slave sync takes long
by Tris Hoar 22 Nov '11

22 Nov '11

On 22/11/2011 12:58, Götz Reinicke wrote: > Hi, > > I do have two DNS servers running bind 9.7.3. One master, one slave. > > If I add/update a record on the master, it takes up to more or less 20 > hours until that change is transferred to the slave. > > That is a long time for me :-) May be I got some settings wrong which > would sync much faster ... ? > > What could be wrong? What might I check? > > Thanks for any suggestion and hint! > > Regards . Götz > It sounds like the the slave is not getting notifies when the master is updated. I'd check the NS records first to make sure both master and slave are listed. Is this server providing external DNS behind a NAT? It could be that you are trying to to zone transfers over the external IP to 2 servers on the same external firewall. in this case, you can add the also-notify { internal ip of slave}; stanza to the named.conf to force it to notify the slave on updates. Tris > > > _______________________________________________ > CentOS mailing list > CentOS(a)centos.org > http://lists.centos.org/mailman/listinfo/centos ************************************************************* This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify postmaster(a)bgfl.org The views expressed within this email are those of the individual, and not necessarily those of the organisation *************************************************************

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CentOS 6 x64 - Changing /var folder to raid 1 disk after install
by Adil BOYUN 22 Nov '11

22 Nov '11

Hello, I have fresh install CentOS 6 x64 running on my server. I have a raid 1 drive 3 tb ready to be mounted. I want to mount this as var folder, could achive this but after reboot, server didn't start, maybe i had problem with command cp -rf. Is this possible to do in a proper manner, with what commands? I used rsync and diff game me like 10+ output. Best regards

4 4

not using LVM for Linux VM guests?
by Smithies, Russell 21 Nov '11

21 Nov '11

I came across an old post comment yesterday (from http://echenh.blogspot.com/2010/04/how-to-extend-lvm-on-vmware-guest-os.html ) discussing the "hack" of LVM on Linux VM guests and whether it's better not to use it to simplify disk management. I've re-posted the comment below, does it sound reasonable? Is it better to not use LVM on Linux VM guests? --Russell ----------------------------------------------------------- At my job, after doing the same kind of procedure graph, we began to ask ourselves, why are using a LVM on a Linux VM guests? Since we're no longer living in the physical OS world, we didn't need to use the OS hacks(LVM) to overcome physical disk limitations anymore. We decided to Just let the hypervisor and virtual storage do that work for us. For example, in our production setup (3 tier commerce with VMs for database , webserver, and appserver), we're see a great improvement in managability and performance (>10%) by just dropping LVM, and most partitions. In your example, the resize process is 7 functional steps: 1. Increase size of VMDK 2. In VM OS, Create Partition (??) 3. REBOOT (!!) 4. PVCreate 5. VGExtend 6. LVExtend 7. Resize2fs Going to a LVM/partition-less setup reduces expansion to 3 steps and we don't need to take the VM OS offline! 1. Increase size of VMDK 2- Inside the VM, OS, rescan the scsi drive with:'echo 1 >/sys/class/scsi_device//rescan; dmesg' (dmesg will check that you drive isize has grown) 3- Resize2fs. Our current disk arrangement has 3 VM HD devices 0 - small device (100M) with a single BOOT partition 1 - entire device is / 2 - entire device is SWAP Doing this has simplified resizing so much, I now let the junior admins and my manager expand drive space as needed. It's also let's us really be spartan on space since expansion is so quick. Instead of increasing systems in 30-50GB chunks, we can do 10-15GB and let our rmonitoring system warn us when space gets tight. ------------------------------------------------------------- ======================================================================= 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. =======================================================================

9 19

Having less languages in Firefox (hunspell dictionaries provide too many locales)
by Mathieu Baudier 21 Nov '11

21 Nov '11

Hello, on CentOS 6, I am routinely writing mails in English, German and French and using the related hunspell dictionaries for the spelling in Firefox (I'm using Google Apps). This works fine but the problem is that languages are added for all the possible locales (English US, UK, Philippines, Bostwana, Trinidad and Tobago, Denmark (sic!), ... and German Germany, Austria... and French France, Canada, Belgium...). So each time I want to switch from one language to the other (which sometimes happens every few minutes), I need to choose in a very long list (with non-deterministic ordering). First I thought it was no big deal, but with time I realize this is a loss of time and concentration which while not big is recurrent. Does anybody knows how I could reduce the list to English UK, German Germany and French France? (no offence to the other locales) An option would be to uninstall the hunspell dictionaries and install the dictionaries manually as Firefox addons, but I find it nice to have them provided by the base OS, and anyhow, I don't think that it is possible for English. Thanks in advance, Mathieu

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Discuss November 2011