Discuss September 2014

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182 participants
169 discussions

Advice on CentOS 7, software raid 1, lvm, 3 TB disks
by Jeff Boyce 17 Sep '14

17 Sep '14

Greetings - I am preparing to order a new desktop system for work. In general the new system will be a Dell Precision T3610 with two 3 TB drives. I plan on installing CentOS 7 as a KVM host, with virtual machines for Win 7 Pro and Linux Mint. I am looking for some advice or a good how-to on configuring software raid on the two drives, then using LVM for the host and virtual machines. I have configured our company server (Dell T610) with hardware raid and LVM for a CentOS 6 KVM host and several virtual machines so I am not a complete novice, but have never setup a Linux software raid system, and have not played with a CentOS 7 install yet. I have been searching the web and forums for information and am not finding much for good guidance. Lots of gotcha's are popping up identifying issues related to CentOS 7, software raid 1, grub install, > 2 TB disks (or any combination of these factors). The CentOS Wiki has a good description of installing CentOS 5 with raid 1, but there is a big warning about being an unsupported (risky) approach. Can anyone point me to a good how-to, or provide some general guidance. Thanks. Jeff Boyce www.meridianenv.com

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Kickstart, inter repo dependencies errors for CentOS7 not for CentOS6
by Baptiste Agasse 16 Sep '14

16 Sep '14

Hi all, I'm testing new "minimal" kickstarts files for CentOS6 and CentOS7. The CentOS6 kickstart works fine, but i've a dependency problem with the CentOS7 equivalent. In my kickstarts, i use network install with following repos/packages (for the repo, the only change is version number 6 <-> 7): url --url="http://mirror.in2p3.fr/ftp/linux/CentOS/7/os/x86_64/" repo --name="Puppet dependencies" --baseurl=http://yum.puppetlabs.com/el/7/dependencies/x86_64/ repo --name="Puppet" --baseurl=http://yum.puppetlabs.com/el/7/products/x86_64/ [...] %package [...] # We use puppet from puppetlabs repo puppet %end [...] It works great for CentOS 6, the vm is installed with puppet, but on CentOS7 anaconda complains that there is a dependency problem: puppet-3.7.1-1.el7.noarch requires ruby-augeas puppet-3.7.1-1.el7.noarch requires ruby-shadow Puppet package is in "puppet" repo and "missing" dependencies packages are provided by the "puppet dependencies" repo. The inter-repo dependencies are correctly resolved in CentOS 6 anaconda but it seems that CentOS 7 anaconda fails to resolve inter-repo dependencies. I expected to have the same behavior as CentOS 6 anaconda installer. Someone else hit this problem ? Have a nice day. Regards. Baptiste.

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Re: [CentOS] ZFS
by Chuck Munro 16 Sep '14

16 Sep '14

On 2014-09-15 , kkeller(a)wombat.san-francisco.ca.us wrote: > > So the ZoL folks want one more feature before calling it 1.0; otherwise > they believe it's production ready. Only your own testing can convince > you that it's truly production ready. > > --keith > That's encouraging news, something I've been looking forward to. FWIW, I've been running ZoL Raid-z3 on two large file servers for quite some time (0.6.2-1 currently, on CentOS-6 x64) with zero problems other than a couple of disk drive failures which ZFS handled nicely. I've had no real reason to upgrade and will wait for a 1.x release before doing anything major. Performance has been very good (although the application is not all that demanding) and stability has been excellent. Over the past year or so the routine twice-weekly scrubs have found no issues, and we've detected no file corruption. The scrubbing operation doesn't seem to affect concurrent use all that much. The servers run for months without reboots (only done for security updates). I don't miss those hours-long ext4 fsck's at all :-) Chuck

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documentation for kernel
by kqt4at5v＠gmail.com 16 Sep '14

16 Sep '14

I am using CentOS 6.5. I am using kernel 2.6.32-431.11.2.el6.i686 and there is a newer version 2.6.32-431.29.2.el6.i686 available. Where can I find documentation that tells me the difference in the two version? Thanks Richard

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Re: [CentOS] ZFS
by James B. Byrne 16 Sep '14

16 Sep '14

On Mon, September 15, 2014 18:54, Paul Heinlein wrote: > On Mon, 15 Sep 2014, Valeri Galtsev wrote: > >> Am I the only one who is tempted to say: people, could you kindly >> start deciphering your abbreviations. I know, I know, computed >> science uses _that_ abbreviation for years. But we definitely have >> people without computer science degree (not me, I do have one ;-) on >> the list who will be happier to learn terms and abbreviations if it >> is mentioned what stands for what. > The general rule in English is that the first time any abbreviation, including a Three Letter Acronym (TLA), is introduced into a written document then the full term is used and the replacement shown in parentheses immediately thereafter. With all respect to those with Computer Science (CS) degrees, or Software engineering (SE) certifications, many of us are involved in multi-disciplinary professional activities and, as there are a limited number of letters, it is not uncommon for a single TLA to be heavily overloaded. As with programming, overloading is a practice fraught with possibilities for error. I would appreciate it very much if those who wish to use TLAs freely consider that what is the obvious meaning to them may not be so obvious to another whose fields of expertise are somewhat different. -- *** 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] quota doesn't appear to work - repquota only updates when quotacheck is run
by Alexander Rusa 16 Sep '14

16 Sep '14

Hi, I have exactly the same problem that you experienced in Nov, 2013. I am using ext4 with journaled quota and the quota usage is only updating when I run quotacheck manually. Have you found a solution? Regards, Alex > I have set up user quotas on an ext4 filesystem. It does not appear that > the quota system is being updated, except when I manually run quotacheck. > > More detail: I run "warnquota -s" from a script in /etc/cron.daily. I > noticed that no one had received an "over quota" message in a long time. > Using "repquota -as", it indeed looked as though everyone was under their > quotas. But "du" showed many people were over quota. So I did a "quotaoff > -a ; quotacheck -vam ; quotaon -a". That night, several > warnquota-generated messages went out. My users diligently cleaned up > their homes. Fast forward 24 hours, and the users received the same > warnquota emails. repquota showed them as being over, but "du" told a > different story. > > System is CentOS 6.3, kernel 2.6.32-279.2.1.el6.x86_64. > > # dmesg | grep -i quota > VFS: Disk quotas dquot_6.5.2 > > > The partition is type ext4 mounted at /share: > > # cat /proc/mounts | grep share > /dev/mapper/VolGroup_Share-LogVol_Share /share ext4 > rw,noatime,nodiratime,barrier=0,nobh,data=writeback,jqfmt=vfsv0,usrjquota=aquota.user > 0 0 > > The ext4 volume sits on top of an lvm logical partion. That logical volume > ultimately sits on top of an encrypted disk using cryptsetup luksFormat: > > # lvscan > ACTIVE '/dev/VolGroup_Share/LogVol_Share' [4.48 TiB] inherit > > # pvscan > PV /dev/mapper/luks-7f865362-ee9f-40de-bc07-73701b4662f3 VG > VolGroup_Share lvm2 [4.48 TiB / 0 free] > > Is there something in my ext4 mount options that is incompatible with > quota? Or maybe the encrypted layer is causing problems? Am I missing > something else? > > Thanks!

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CentOS-announce Digest, Vol 115, Issue 11
by centos-announce-request＠centos.org 16 Sep '14

16 Sep '14

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-2014:1191 CentOS 7 shadow-utils FASTTRACK BugFix Update (Johnny Hughes) 2. CEBA-2014:1192 CentOS 6 kexec-tools BugFix Update (Johnny Hughes) 3. CESA-2014:1193 Important CentOS 6 axis Security Update (Johnny Hughes) 4. CESA-2014:1193 Important CentOS 5 axis Security Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Mon, 15 Sep 2014 15:15:29 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CEBA-2014:1191 CentOS 7 shadow-utils FASTTRACK BugFix Update Message-ID: <20140915151529.GA60864(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2014:1191 Upstream details at : https://rhn.redhat.com/errata/RHBA-2014-1191.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) x86_64: 8a5accffef27e51392c7188797cb3e23836c0bc83c4f0e204adac58b0721d7e3 shadow-utils-4.1.5.1-15.el7.x86_64.rpm Source: a072cc7be1ad019c00b18c13cb20fe50669114569f6c9bb4f970cba8fff9dc20 shadow-utils-4.1.5.1-15.el7.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 2 Date: Mon, 15 Sep 2014 15:23:04 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CEBA-2014:1192 CentOS 6 kexec-tools BugFix Update Message-ID: <20140915152304.GA61227(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2014:1192 Upstream details at : https://rhn.redhat.com/errata/RHBA-2014-1192.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 41efae31889d1c64acb6b15c0a2e45cfd2a99aa3fafa540319383d1a831d9560 kexec-tools-2.0.0-273.el6_5.1.i686.rpm x86_64: 4011892919f29050633454c851237222b093d51ed6672e61beb9c76ee6ecea5c kexec-tools-2.0.0-273.el6_5.1.x86_64.rpm Source: f6f8107883335441fdfb67f741acf648c5964b209637497f0bac9cfbb1995f0b kexec-tools-2.0.0-273.el6_5.1.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 3 Date: Mon, 15 Sep 2014 16:46:18 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2014:1193 Important CentOS 6 axis Security Update Message-ID: <20140915164618.GA17558(a)n04.lon1.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2014:1193 Important Upstream details at : https://rhn.redhat.com/errata/RHSA-2014-1193.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 53ad73ff95e8d79bc7d970f1ef7e0086f9e3ae327cbb362201ef63b3842cc8a1 axis-1.2.1-7.5.el6_5.noarch.rpm dceac091c26978c54ed647604a8298b55735addeed8db17fa927f9908c05da2b axis-javadoc-1.2.1-7.5.el6_5.noarch.rpm dc5b689a3a7999d7a5fa4e1579ec3fcf93e73931d567d673dac70abab0ce1631 axis-manual-1.2.1-7.5.el6_5.noarch.rpm x86_64: 53ad73ff95e8d79bc7d970f1ef7e0086f9e3ae327cbb362201ef63b3842cc8a1 axis-1.2.1-7.5.el6_5.noarch.rpm dceac091c26978c54ed647604a8298b55735addeed8db17fa927f9908c05da2b axis-javadoc-1.2.1-7.5.el6_5.noarch.rpm dc5b689a3a7999d7a5fa4e1579ec3fcf93e73931d567d673dac70abab0ce1631 axis-manual-1.2.1-7.5.el6_5.noarch.rpm Source: 7be82c91f38b3bb69cf6b0f302f52d7c7de5bf31f7e042a87e66735a7afc0fda axis-1.2.1-7.5.el6_5.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 4 Date: Mon, 15 Sep 2014 16:53:13 +0000 From: Johnny Hughes <johnny(a)centos.org> To: centos-announce(a)centos.org Subject: [CentOS-announce] CESA-2014:1193 Important CentOS 5 axis Security Update Message-ID: <20140915165313.GA14711(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2014:1193 Important Upstream details at : https://rhn.redhat.com/errata/RHSA-2014-1193.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 2e346500c34aaf601a265f623f2723eeb9babad2d0300f50fdeda441b275efe3 axis-1.2.1-2jpp.8.el5_10.i386.rpm 28164c6748741d80bc7fd9d486a1c0597a8d513c55020ef50eb0c9ad4a1fe3e1 axis-javadoc-1.2.1-2jpp.8.el5_10.i386.rpm 338bac2f6a89ffe5bb56deb1cea645bea6dc4ed177787977c4b1373666d3ebc8 axis-manual-1.2.1-2jpp.8.el5_10.i386.rpm x86_64: 23a6215f6454d1612f3ad4c11e2d035644217358494917d704cdbef0c0ec56ac axis-1.2.1-2jpp.8.el5_10.x86_64.rpm 8420cc89cfadea3b88189d3b1419cc8b1618480322e8267406f9fb26a750d852 axis-javadoc-1.2.1-2jpp.8.el5_10.x86_64.rpm 85a3d2dc7efc057133d21fafb628e8922f2255ff6d35bcd250b0bbc221cdfa26 axis-manual-1.2.1-2jpp.8.el5_10.x86_64.rpm Source: 9750619e189b580bc485f2858f8036b5e7bf073c3ad3679b6b1becd0d3abde4c axis-1.2.1-2jpp.8.el5_10.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 115, Issue 11 ************************************************

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Re: [CentOS] ZFS
by Miguel Medalha 16 Sep '14

16 Sep '14

> Maybe you can tune ZFS further, but I tried it in userspace (with FUSE) and reading was a almost 5 times slower than MDADM. That alone is meaningless. MDADM with which filesystem? Zfsonlinux does not work in user space, it is a kernel module. Just try it.

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wml / centos7
by Michael Kress 16 Sep '14

16 Sep '14

Hi, anybody got wml running under centos7? Got problems either compiling it or finding an rpm. TIA for any hint! Regards Michael

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Re: [CentOS] unsubscribe
by SilverTip257 15 Sep '14

15 Sep '14

On Mon, Sep 15, 2014 at 4:22 AM, Web Master < webmaster(a)age-concern-cardiff.org.uk> wrote: > help > > Please visit the URL as pasted below (shows up in the footer of every mailing list message). Heck, instructions are also at the top of the message you apparently did not read closely. You sent your "help help help" message to the wrong email address if that's what you were trying to do. :-( CentOS mailing list CentOS(a)centos.org http://lists.centos.org/mailman/listinfo/centos > -----Original Message----- From: centos-request(a)centos.org > Sent: Saturday, September 13, 2014 1:00 PM > To: centos(a)centos.org > Subject: CentOS Digest, Vol 116, Issue 13 > > Send CentOS mailing list submissions to > centos(a)centos.org > > To subscribe or unsubscribe via the World Wide Web, visit > http://lists.centos.org/mailman/listinfo/centos > or, via email, send a message with subject or body 'help' to > centos-request(a)centos.org > > You can reach the person managing the list at > centos-owner(a)centos.org > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of CentOS digest..." > > <...snipped...> > > > End of CentOS Digest, Vol 116, Issue 13 > *************************************** > _______________________________________________ > CentOS mailing list > CentOS(a)centos.org > http://lists.centos.org/mailman/listinfo/centos > -- ---~~.~~--- Mike // SilverTip257 //

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Discuss September 2014