Discuss January 2015

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166 participants
146 discussions

Lvm snapshot problem
by Cristian Del Carlo 12 Jan '15

12 Jan '15

Hi list, i have an error when i do an lvm snapshot. The error is like this when i use the command "/sbin/lvcreate -L20G -s -n <snapshot> /dev/vgraid/vm" : *semid 5013504: semop failed for cookie 0xd4d23a8: incorrect semaphore state* * Failed to set a proper state for notification semaphore identified by cookie value 223159208 (0xd4d23a8) to initialize waiting for incoming notifications.* I use centos 7 with this packages: # rpm -aq | grep kernel kernel-3.10.0-123.9.3.el7.x86_64 # rpm -aq | grep lvm2 lvm2-libs-2.02.105-14.el7.x86_64 lvm2-2.02.105-14.el7.x86_64 I read that the problem is related to udev : # zgrep UEV /proc/config.gz CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" # grep UEV /boot/config-3.10.0-123.9.3.el7.x86_64 CONFIG_UEVENT_HELPER_PATH="" CONFIG_DM_UEVENT=y I can not understand the problem. The server is in a server farm with a lot of VM running I would like to solve the problem without restarting the server. Could you help me? Thanks. -- -------------------------------------------------------- Cristian Del Carlo Il testo e gli eventuali documenti trasmessi contengono informazioni riservate al destinatario indicato. La seguente e-mail è confidenziale e la sua riservatezza è tutelata legalmente dal Decreto Legislativo 196 del 30/06/2003 (Codice di tutela della privacy). La lettura, copia o altro uso non autorizzato o qualsiasi altra azione derivante dalla conoscenza di queste informazioni sono rigorosamente vietate. Qualora abbiate ricevuto questo documento per errore siete cortesemente pregati di darne immediata comunicazione al mittente e di provvedere, immediatamente, alla sua distruzione. --------------------------------------------------------

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Thunderbird randomly segfaults at startup
by Robert Nichols 12 Jan '15

12 Jan '15

Anyone else seeing this? This is happening on a straight "Desktop" install of CentOS 6.6 fully updated. I have made no changes other than installing Thunderbird. Thunderbird will occasionally (10 to 20% of the time) fail to start, and the abrt report indicates a signal 11 (SIGSEGV). I don't see any other reports of this. Is no one using Thunderbird these days? Do abrt reports submitted from CentOS go anywhere useful these days? I saw some discussion a while back, but don't recall the results. Should I submit one? -- Bob Nichols "NOSPAM" is really part of my email address. Do NOT delete it.

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logrotate script not working
by Tim Dunphy 11 Jan '15

11 Jan '15

Hey guys, Got a quick question and I hope this is an easy one! In my /etc/logrotate.conf file I have the following entry: # rotate all of the apache logs -- we'll rotate them here /var/log/mysqld.log { weekly size 50M create 0644 mysql mysql rotate 1 } And from that I would expect the log to rotate when it reaches 50M in size. However I just caught that log weighing in at 356MB!! So how can I get this log file to rotate when it hits 50MB? Any ideas, advice and help at all would be appreciated. Thanks Tim -- GPG me!! gpg --keyserver pool.sks-keyservers.net --recv-keys F186197B

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Intel NUC? Any experience
by david 11 Jan '15

11 Jan '15

Folks The price point of Intel's NUC unit makes it attractive to use as a server that doesn't have significant computational load. In my environment, a USB connected hard-drive could provide all the storage needed. I wonder if anyone has had experience with it, and can answer: 1) Does Centos6 and/or Centos7 install from a USB connected optical drive? or a USB flash drive? I'd prefer to do a NetInstall. If the answer is essentially no, there's no point in continuing. 2) Is the Ethernet connection supported by NetInstall and the subsequent OS? 3) Is it possible to add an additional NIC for possible use as a home router/gateway? If not internally, then via a USB connected NIC? Any thoughts on the subject would be appreciated. David San Francisco

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LVM - pvmove and multiple servers
by Daniel Hoffman 10 Jan '15

10 Jan '15

Hi All. Looking for some guidance/experience with LVM and pvmove. I have a LUN/PV being presented from a iscsi SAN. The LUN/PV is presented to 5 servers as a shared VG they all have LV's they use for data, they are all connected via iSCSI. As the SAN I am using is being replaced I need to move onto a new unit. My migration strategy at this time is to 1. Present a new LUN from the new SAN to all machines. 2. Make a PV with the new LUN. 3. Add it to the existing VG. 4. Use pvmove to move all the data from one PV to another. 5. Once the old LUN is empty, complete a pvresize to remove the old LUN. This all seems sound but looking for advice, specifically around the fact that the VG/PV data is being used by a number of machines/servers and the LV's are active on a number of different nodes. All the documentation/examples I can find assume a disk in a server, not a LUN on a SAN being shared by a number of servers. Any advice is appreciated. Thanks Daniel

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Re: [CentOS] Design changes are done in Fedora
by James B. Byrne 10 Jan '15

10 Jan '15

On Mon, December 29, 2014 04:22, Ned Slider wrote: > What business model do you have that you > can't build around a product guaranteed to be consistent/supported for > the next 10 years? Well, despite the hype from Wall St., Bay St. and The City, a large number of organisations in the world run on software that is decades old and cannot be economically replaced. In many instances in government and business seven years is a typical time-frame in which to get a major software system built and installed. And I have witnessed longer. So, seven, even ten, years of stability is really nothing at all. And as Linux seeks to enter into more and more profoundly valuable employment the type of changes that we witnessed from v6 to v7 are simply not going to be tolerated. In fact, it my considered belief that RH in Version EL7 has done themselves a serious injury with respect to corporate adoption for core systems. Perhaps they seek a different market? Think about it. What enterprise can afford to rewrite all of its software every ten years? What enterprise can afford to retrain all of its personnel to use different tools to accomplish the exact same tasks every seven years? The desktop software churn that the PC has inured in people simply does not scale to the enterprise. If you wish to see what change for change's sake produces in terms of market share consider what Mozilla has done with Firefox. There is absolutely no interface that is as easy to use as the one you have been working on for the past ten years. And that salient fact seems to be completely ignored by many people in the FOSS community. -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

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Re: [CentOS] Design changes are done in Fedora
by James B. Byrne 09 Jan '15

09 Jan '15

On Wed, January 7, 2015 09:48, Jonathan Billings wrote: > On Tue, Jan 06, 2015 at 08:45:29PM -0600, John R. Dennison wrote: >> It's not relevant in _any_ sense. CentOS is nothing more than (at >> it's core) a rebuild of RHEL. This type of nonsense should be >> directed to Red Hat in a Red Hat venue. It's nothing but >> off-topic noise here as CentOS will not deviate from its >> upstream in its core offerings. > > Agreed. > > If you want to participate in how the upstream OS is being shaped, I > suggest looking at the Fedora Project, which is driven by volunteers. > > If you notice the Subject: of this thread, it is "Design changes are > done in Fedora". Pretty clear message. > There is a common word disguised in the letter E that we find in both the initialism RHEL and the acronym CentOS. It is the the word Enterprise. It is my observation that the subscriber base to this list tends to those who have wider responsibilities than deciding what the corporate GUI desktop layout should look like next year. Most here also seem to be somewhat concerned with concepts of cost and benefit. It is evident in many posts that the increasing costs of supporting large numbers of people negatively impacted by changes introduced to CentOS from outside of their span of control is beginning to impinge more and more upon decision making. In some cases that consideration is evidently influencing the decision to deploy CentOS or not. Now, what does the subscriber base to Fedora developers list look like? Well, to begin with there are no fewer than 209 official 'Fedora' lists. Which should one join to 'influence' anything? Let us grant that a number, say half, are self-evidently not of great concern to operational deployment and employment of RHEL, CentOS or SL in the Enterprise environment. The oddly named 'UK-Ambassadors' or the narrowly focused language translation mailing lists for instance. That still leaves in excess of a hundred lists. Where should one apply pressure? What forum exists to discuss the economic costs to Enterprises of introducing a marginal, possibly questionable, improvement to an existing UI or common utility? The devel list? The users list? A perusal of the contents of both the Fedora devel list and users list does not give one much hope that such a point of view would be tolerated, much less welcomed. For example, one the the notable contributors to those forums is himself banned from this list. Further, discussions tend to be far, far down in the weeds, if not subterranean altogether, when viewed from the perspective of the question: what is this change, improvement, alteration or deprecation going to cost the installed base to implement? No, no-one presently on this list is likely to have very much of an impact on the folks that are the Fedora project. Their objectives are far removed from the concerns of those tasked to keep automated systems working and invisible to the Enterprises that employ them. The overarching concern of the Enterprise is to employ capital and labour to produce value; and not simply to prove technologies or advance personal or political agendas. Not that the later two situations are uncommon in the Enterprise either. One might, however, consider that the CentOS list is a concentration of people that evidently have some status within a number of Enterprises. And these influential people have chosen not to pay RH for their offering. It might be of some interest to RH in determining why this is so. It might also be the case that this forum, being concerned with issues such as deployment on a large scale and the costs of upgrading RH flagship product, provides valuable insight on how RH's paying customers might be viewing their product as well. After all, because we use CentOS rather than RHEL and forgo the provision of RH's expert advice, then we ourselves and our organisations are a self-identified technologically advanced user community. And we are concerned more with the entire package than with any particular component or detail. If we have concerns and reservations then perhaps RH should have concerns. If we express them here then there is a chance, a small chance but a chance nonetheless, that someone at RH with a view a little broader than that evidenced in most of the traffic on the Fedora devel list, might take notice. IMHO, FWIW. -- *** E-Mail is NOT a SECURE channel *** James B. Byrne mailto:ByrneJB@Harte-Lyne.ca Harte & Lyne Limited http://www.harte-lyne.ca 9 Brockley Drive vox: +1 905 561 1241 Hamilton, Ontario fax: +1 905 561 0757 Canada L8E 3C3

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Re: [CentOS] Camera doesn't works after "yum upgrade"
by Patrick Begou 09 Jan '15

09 Jan '15

Thanks Marc for your answer, I have a /dev/video0 but no /dev/video. Should I create a link ? Or a new rule in udev ? Patrick m.roth(a)5-cent.us wrote: > Patrick Begou wrote: >> Hi, >> >> I've launched a "yum upgrade" command on a CentOS6 laptop which has >> updated nearly 600 packages. Automatic updates were not working because > of a >> conflict on a package. >> >> So the laptop is now uptodate but the camera did not works after this. The >> message is: >> >> kernel: uvcvideo: Failed to query (GET_DEF) UVC control 6 on unit 2: -110 >> (exp. 2). >> >> The camera is detected as USB, lsusb shows: >> Bus 001 Device 003: ID 0c45:646b Microdia > <snip> > We use motion, so I' m not familiar with camera, but does it load an v4l2 > kernel module, and so create /dev/video0? If so, does the /dev/video > device exist? > > mark > -- =================================================================== | Equipe M.O.S.T. | | | Patrick BEGOU | mailto:Patrick.Begou@grenoble-inp.fr | | LEGI | | | BP 53 X | Tel 04 76 82 51 35 | | 38041 GRENOBLE CEDEX | Fax 04 76 82 52 71 | ===================================================================

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Camera doesn't works after "yum upgrade"
by Patrick Begou 09 Jan '15

09 Jan '15

Hi, I've launched a "yum upgrade" command on a CentOS6 laptop which has updated nearly 600 packages. Automatic updates were not working because of a conflict on a package. So the laptop is now uptodate but the camera did not works after this. The message is: kernel: uvcvideo: Failed to query (GET_DEF) UVC control 6 on unit 2: -110 (exp. 2). The camera is detected as USB, lsusb shows: Bus 001 Device 003: ID 0c45:646b Microdia I've tryed to boot on alternative kernels but no change: - vmlinuz-2.6.32-504.3.3.el6.centos.plus.x86_64 (which solve a camera problem on my laptop) - vmlinuz-2.6.32-431.29.2.el6.x86_64 - vmlinuz-3.10.63-1.el6.elrepo.x86_64 Any idea about a faulty package ? I've added the upgrade log in attachment but it's quite big. The first four erased item were because of conflicts. Some are re-installed after the upgrade (end of the log file) Thanks Patrick -- =================================================================== | Equipe M.O.S.T. | | | Patrick BEGOU | mailto:Patrick.Begou@grenoble-inp.fr | | LEGI | | | BP 53 X | Tel 04 76 82 51 35 | | 38041 GRENOBLE CEDEX | Fax 04 76 82 52 71 | ===================================================================

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CentOS-announce Digest, Vol 119, Issue 3
by centos-announce-request＠centos.org 09 Jan '15

09 Jan '15

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-2015:0017 CentOS 7 libibverbs BugFix Update (Johnny Hughes) 2. CEBA-2015:0017 CentOS 7 libmlx4 BugFix Update (Johnny Hughes) 3. CEBA-2015:0018 CentOS 6 sblim-sfcb BugFix Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Thu, 8 Jan 2015 15:01:08 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CEBA-2015:0017 CentOS 7 libibverbs BugFix Update Message-ID: <20150108150108.GA29838(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2015:0017 Upstream details at : https://rhn.redhat.com/errata/RHBA-2015-0017.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: eb24f744406f3e6ef455f01d0ffe0355ee4481981fd862e7548481bafc551fd0 libibverbs-1.1.8-1.el7_0.i686.rpm 0caede2c4f3a20abd7dba3a438d5f2276598bbbd19c718467100c9708362d8da libibverbs-1.1.8-1.el7_0.x86_64.rpm f6a84e17349204ed40454f77540ed95152a74e449c5a640fd94dbce58b038f71 libibverbs-devel-1.1.8-1.el7_0.i686.rpm 9c9b61f82b02b384349e3f08e20d7d31b8ea1391d7487a0eef7f7a9e171a8c36 libibverbs-devel-1.1.8-1.el7_0.x86_64.rpm 9860db42b53a85d98932a5e289816267a37c8b7407808b70b0d0031387cc050e libibverbs-devel-static-1.1.8-1.el7_0.i686.rpm c65788cf7296cd308cc9a8e779e58c31de00dbdff51eeb95fe7e4989a694a867 libibverbs-devel-static-1.1.8-1.el7_0.x86_64.rpm 83e9dbdabfa0cb9b3d399833a50f81b6b6f855ba3365f419dfe87ca441dc7e15 libibverbs-utils-1.1.8-1.el7_0.x86_64.rpm Source: 89d56585fb91fab8ac459cee5e1bb4ff5cda4be9746f6905b8548d41648ec81c libibverbs-1.1.8-1.el7_0.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 2 Date: Thu, 8 Jan 2015 15:01:20 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CEBA-2015:0017 CentOS 7 libmlx4 BugFix Update Message-ID: <20150108150120.GA29909(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2015:0017 Upstream details at : https://rhn.redhat.com/errata/RHBA-2015-0017.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: 1e796a0967c805e15027e8c819a7e6508b9220e4c1d93d186942c7f037234646 libmlx4-1.0.6-1.el7_0.i686.rpm 446415eeca2e3eb825b7e453458c1706bff5d250421eba2caefcc8b49ddc2ac8 libmlx4-1.0.6-1.el7_0.x86_64.rpm fb2366651f8f06a6978d0ff65c68c5d055ac85402048b03730ff43b066469c5c libmlx4-static-1.0.6-1.el7_0.i686.rpm 12be5b9f6d6ae735762f9c67725b72c7148045d10f7552b0ef6d9860597deedf libmlx4-static-1.0.6-1.el7_0.x86_64.rpm Source: 57ff98b608c9cfedc62643769f9d784d20780cfe12244dc7c9e0424c8d9388a4 libmlx4-1.0.6-1.el7_0.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 3 Date: Thu, 8 Jan 2015 15:02:17 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CEBA-2015:0018 CentOS 6 sblim-sfcb BugFix Update Message-ID: <20150108150217.GA30115(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2015:0018 Upstream details at : https://rhn.redhat.com/errata/RHBA-2015-0018.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: cdeb719e515149ee673dde3ddaa9bee21fc20ec06b5a9e54fb9b3b1b0c3c73f2 sblim-sfcb-1.3.11-3.el6_6.i686.rpm x86_64: f96e93a058a2a3b8903000aaf6b0a93f8c60d1c557726e78cf8ae6a78bb5b3ae sblim-sfcb-1.3.11-3.el6_6.x86_64.rpm Source: c12b395e917726280c75b8bee4ca85aa3118a44a8527bdaa690061c82ad5b40e sblim-sfcb-1.3.11-3.el6_6.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 119, Issue 3 ***********************************************

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Discuss January 2015