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Linux Software RAID 1 - Unequal Sized Hard Disks
by Manish Kathuria 18 Oct '12

18 Oct '12

Has anyone created or rebuilt a Linux Software RAID having mirrored partitions on unequal sized hard disks ? There is a CentOS 5 server having two 400 GB hard disks with five mirrored partitions (software RAID 1) and one of the hard disks is dying. Since new 400 GB HDDs are not available here, we are exploring the possibility of replacing the faulty hard disk with one of a higher capacity (500 GB or more). And once it is fully replicated, we plan to replace the other 400 GB HDD also with another hard disk of the same higher capacity. Just want to know if anyone has done something similar and what are the chances of success (or data loss) ? Thanks, -- Manish

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Re: [CentOS] Linux Software RAID 1 - Unequal Sized Hard Disks
by Manish Kathuria 18 Oct '12

18 Oct '12

On Thu, Oct 18, 2012 at 9:02 PM, Reindl Harald <h.reindl(a)thelounge.net> wrote: > > > Am 18.10.2012 17:29, schrieb Manish Kathuria: >> Has anyone created or rebuilt a Linux Software RAID having mirrored >> partitions on unequal sized hard disks ? There is a CentOS 5 server >> having two 400 GB hard disks with five mirrored partitions (software >> RAID 1) and one of the hard disks is dying. Since new 400 GB HDDs are >> not available here, we are exploring the possibility of replacing the >> faulty hard disk with one of a higher capacity (500 GB or more). And >> once it is fully replicated, we plan to replace the other 400 GB HDD >> also with another hard disk of the same higher capacity. >> >> Just want to know if anyone has done something similar and what are >> the chances of success (or data loss) ? > > no problem at all > > * remove the disk > * dd if=/dev/one-of-the-living/ of=/dev/new-disk/ bs=512 count=1 > * reboot or bring the kernel to re-read the partition table > * rebuild the raid > > the dd-trick is intented to clone the complete partition table and > MBR to the new disk and the additional space is untouched > > linux-software raid has no problem with different disk-sizes > only the used partitions must be equal > > Thanks Reindl, copying the first sector using is the simplest and foolproof way of ensuring that the exact partition table is cloned but would it also include the logical partitions ? In our case we have 5 partitions, two of which are logical ones. -- Manish

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CentOS-announce Digest, Vol 92, Issue 13
by centos-announce-request＠centos.org 18 Oct '12

18 Oct '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. CESA-2012:1384 Critical CentOS 6 java-1.6.0-openjdk Update (Johnny Hughes) 2. CESA-2012:1386 Important CentOS 6 java-1.7.0-openjdk Update (Johnny Hughes) 3. CESA-2012:1385 Important CentOS 5 java-1.6.0-openjdk Update (Johnny Hughes) 4. CEBA-2012:1387 CentOS 6 system-config-users FASTTRACK Update (Johnny Hughes) 5. CEBA-2012:1389 CentOS 6 mod_authz_ldap FASTTRACK Update (Johnny Hughes) 6. CEBA-2012:1388 CentOS 6 perl-SOAP-Lite FASTTRACK Update (Johnny Hughes) ---------------------------------------------------------------------- Message: 1 Date: Wed, 17 Oct 2012 21:15:32 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CESA-2012:1384 Critical CentOS 6 java-1.6.0-openjdk Update To: centos-announce(a)centos.org Message-ID: <20121017211532.GA9274(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2012:1384 Critical Upstream details at : https://rhn.redhat.com/errata/RHSA-2012-1384.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 50cb8ee6fd2b3aea00712e04123a09ed28564ef4afa56402cbdffa843bd25643 java-1.6.0-openjdk-1.6.0.0-1.50.1.11.5.el6_3.i686.rpm 92e23075dcf6b4404aaddf9b1b47f9b8497bb556afe0876563b274ddd336b7d6 java-1.6.0-openjdk-demo-1.6.0.0-1.50.1.11.5.el6_3.i686.rpm 4376382c52276c7c8eb3e75562c87e739313d1b94cdcbbf06fa44670cc2748b7 java-1.6.0-openjdk-devel-1.6.0.0-1.50.1.11.5.el6_3.i686.rpm 0319859e9c0e5d6a0d95667e890943990ffb988a95b2a9b8641fa72d44033208 java-1.6.0-openjdk-javadoc-1.6.0.0-1.50.1.11.5.el6_3.i686.rpm 05836ee26e3059993f0c1096ede3e60b2315a698bf29f6c6baa42353fc75449a java-1.6.0-openjdk-src-1.6.0.0-1.50.1.11.5.el6_3.i686.rpm x86_64: abf5a766fca3fcdb46ca8d1a2c4e0cc100a4320be6bd0ff5776fafe457b9ce36 java-1.6.0-openjdk-1.6.0.0-1.50.1.11.5.el6_3.x86_64.rpm 85cf1d2b79821d19fa10e133dd630d8c2306dab5937dd940938f7de6e8a0c111 java-1.6.0-openjdk-demo-1.6.0.0-1.50.1.11.5.el6_3.x86_64.rpm 3e6a8d4ab77415b5ab6cd3de3e236487eb24d75442e0836cd65ebfb097e869ee java-1.6.0-openjdk-devel-1.6.0.0-1.50.1.11.5.el6_3.x86_64.rpm fb28e492da55953e17123444edde8105e9a3236cacf89027bccaa330ba6908cc java-1.6.0-openjdk-javadoc-1.6.0.0-1.50.1.11.5.el6_3.x86_64.rpm c02819d5a8c96bbb0465072269bd72595f9a3357ae65a6616a941510a9ee25ba java-1.6.0-openjdk-src-1.6.0.0-1.50.1.11.5.el6_3.x86_64.rpm Source: 117863dabcf0480bbdd2b8e524dd47fc91ea25f3be7048b74fd6f653d256da42 java-1.6.0-openjdk-1.6.0.0-1.50.1.11.5.el6_3.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 2 Date: Wed, 17 Oct 2012 21:16:08 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CESA-2012:1386 Important CentOS 6 java-1.7.0-openjdk Update To: centos-announce(a)centos.org Message-ID: <20121017211608.GA9371(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2012:1386 Important Upstream details at : https://rhn.redhat.com/errata/RHSA-2012-1386.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 399c7a3029469bb0aa4e56191fd2915e0e3f57c48c01b7f81462e6fb1f955065 java-1.7.0-openjdk-1.7.0.9-2.3.3.el6_3.1.i686.rpm 3391b19128d053d2f92564be1735f3bf8450bc978b9557dba98862923e7b0b79 java-1.7.0-openjdk-demo-1.7.0.9-2.3.3.el6_3.1.i686.rpm 4690a2efe37b964d72814bebe689dac9ecd9c85ba288e61029425bb1ccab4d6e java-1.7.0-openjdk-devel-1.7.0.9-2.3.3.el6_3.1.i686.rpm fc1f4d8d08392be3ccaf05313d3e837e3bd26198b59de1178be9a9c9d8c83149 java-1.7.0-openjdk-javadoc-1.7.0.9-2.3.3.el6_3.1.noarch.rpm 9a9a0cb0ed8a99a1cfe429f7e76bebe89ee4e7091d01954053ed3ff140b92e25 java-1.7.0-openjdk-src-1.7.0.9-2.3.3.el6_3.1.i686.rpm x86_64: 2a3f08b2e52d57e71a6960d61b463f6c3e7fdc7c0e8379810c7ca01f6af990d0 java-1.7.0-openjdk-1.7.0.9-2.3.3.el6_3.1.x86_64.rpm c51b5858a6b740ec396bf912d61a8552697f250127d44322059851c95c3e3c27 java-1.7.0-openjdk-demo-1.7.0.9-2.3.3.el6_3.1.x86_64.rpm c4fc2e72a3a166cbc49b50a745b68200bb21bbecc1bd77274a16b24366e0a377 java-1.7.0-openjdk-devel-1.7.0.9-2.3.3.el6_3.1.x86_64.rpm 433864187d962c70844d195170317ed2fa649ee10f873290b0f39fa257c9f84e java-1.7.0-openjdk-javadoc-1.7.0.9-2.3.3.el6_3.1.noarch.rpm ad17183e590b32b1c984469df75474f5e061686fa14949610dcd734e0d76401f java-1.7.0-openjdk-src-1.7.0.9-2.3.3.el6_3.1.x86_64.rpm Source: a97940f0f634c9dca7d795aa60becad5ec5c71f8194c961515fd3b740e96b04e java-1.7.0-openjdk-1.7.0.9-2.3.3.el6_3.1.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 3 Date: Wed, 17 Oct 2012 21:21:03 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CESA-2012:1385 Important CentOS 5 java-1.6.0-openjdk Update To: centos-announce(a)centos.org Message-ID: <20121017212103.GA9533(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Security Advisory 2012:1385 Important Upstream details at : https://rhn.redhat.com/errata/RHSA-2012-1385.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 79f110ffe20135bca3e1c9df3ac6fd8697018b9886d2b071cfef8415f87197a9 java-1.6.0-openjdk-1.6.0.0-1.28.1.10.10.el5_8.i386.rpm c1b12963e8d6337a6c6e66108ddbe94de0f6752bc3cd5882d5389eda2933ebae java-1.6.0-openjdk-demo-1.6.0.0-1.28.1.10.10.el5_8.i386.rpm cba4a4b2b120943e8c4164b6995e6f55259afbcd37c257f2ce2f7d9bbdd043b1 java-1.6.0-openjdk-devel-1.6.0.0-1.28.1.10.10.el5_8.i386.rpm c9cde9a0c515b82f6bf779a115df55fdfaadc528dbb5919a1ffc83b31d430833 java-1.6.0-openjdk-javadoc-1.6.0.0-1.28.1.10.10.el5_8.i386.rpm 0bb4603186128e5afca7288d918bd86283de024d9a0eb977e5d8d3952d7b500a java-1.6.0-openjdk-src-1.6.0.0-1.28.1.10.10.el5_8.i386.rpm x86_64: 1f1163199fe459cb15b93942239bd45d581030d29ebb3064499d23d53b44fda0 java-1.6.0-openjdk-1.6.0.0-1.28.1.10.10.el5_8.x86_64.rpm d7cf93f3e143c080a3d269f0457ea04cc134af6f734cacf5f8d4f01a13c6b183 java-1.6.0-openjdk-demo-1.6.0.0-1.28.1.10.10.el5_8.x86_64.rpm b0127151122ebe5de458ec45c91ceb589e8f6cbfade699e1f7dd1ad3df6e8546 java-1.6.0-openjdk-devel-1.6.0.0-1.28.1.10.10.el5_8.x86_64.rpm f213e850b04490e4d705a37fedb861e98c41dec590aed56516f5794f05b155aa java-1.6.0-openjdk-javadoc-1.6.0.0-1.28.1.10.10.el5_8.x86_64.rpm be341c32a4ba9527487fa19c052a736a9da54ab04bb9077017cfdf20d2365c7b java-1.6.0-openjdk-src-1.6.0.0-1.28.1.10.10.el5_8.x86_64.rpm Source: 9eca5737e96257acf13ebd6d83db8b19e82bed9856808b84c8ac0ffaeb476acb java-1.6.0-openjdk-1.6.0.0-1.28.1.10.10.el5_8.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 4 Date: Thu, 18 Oct 2012 14:48:26 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2012:1387 CentOS 6 system-config-users FASTTRACK Update To: centos-announce(a)centos.org Message-ID: <20121018144826.GA28232(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2012:1387 Upstream details at : https://rhn.redhat.com/errata/RHBA-2012-1387.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 712c4b68fd8d7552e0b77562995f1edcad8e5be78b965563aa14179cc962dc12 system-config-users-1.2.106-7.el6.noarch.rpm x86_64: 712c4b68fd8d7552e0b77562995f1edcad8e5be78b965563aa14179cc962dc12 system-config-users-1.2.106-7.el6.noarch.rpm Source: 1866b655fb6f1ed516b72d8bdd59cadd93f5314d007e57e57c20d08877811988 system-config-users-1.2.106-7.el6.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 5 Date: Thu, 18 Oct 2012 14:48:40 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2012:1389 CentOS 6 mod_authz_ldap FASTTRACK Update To: centos-announce(a)centos.org Message-ID: <20121018144840.GA28308(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2012:1389 Upstream details at : https://rhn.redhat.com/errata/RHBA-2012-1389.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: e8ea60470d2672aa5a791157b464b3c3437adff9a0a4eb89dd264b547907cade mod_authz_ldap-0.26-16.el6.i686.rpm x86_64: f3886214f3d4cab521c913645ddfcd90d683a970ad376d18c47d8f43209ab3d3 mod_authz_ldap-0.26-16.el6.x86_64.rpm Source: 88bdb7c57a444314a619da15213e90f463ba640d706ea017edb11c156a93d219 mod_authz_ldap-0.26-16.el6.src.rpm -- Johnny Hughes CentOS Project { http://www.centos.org/ } irc: hughesjr, #centos(a)irc.freenode.net ------------------------------ Message: 6 Date: Thu, 18 Oct 2012 14:49:26 +0000 From: Johnny Hughes <johnny(a)centos.org> Subject: [CentOS-announce] CEBA-2012:1388 CentOS 6 perl-SOAP-Lite FASTTRACK Update To: centos-announce(a)centos.org Message-ID: <20121018144926.GA28359(a)chakra.karan.org> Content-Type: text/plain; charset=us-ascii CentOS Errata and Bugfix Advisory 2012:1388 Upstream details at : https://rhn.redhat.com/errata/RHBA-2012-1388.html The following updated files have been uploaded and are currently syncing to the mirrors: ( sha256sum Filename ) i386: 868964f0467b4d452b2afe91e97af5ce4576abb53c9341d9b3b7f1891bfc1df1 perl-SOAP-Lite-0.710.10-3.el6.noarch.rpm x86_64: 868964f0467b4d452b2afe91e97af5ce4576abb53c9341d9b3b7f1891bfc1df1 perl-SOAP-Lite-0.710.10-3.el6.noarch.rpm Source: 62ceabfad43543233e1cbdba381ecf07cd9084f4b9797ab7dbb74599c7070d8f perl-SOAP-Lite-0.710.10-3.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 92, Issue 13 ***********************************************

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Debugging I/O Errors that abort the journal
by james 18 Oct '12

18 Oct '12

I got a I/O error on one of my disks that caused the journal to abort (error below) and be mounted in read only mode. I rebooted and the file system check ran automatically and resolved the error. I did some searching around and couldn't find a likely cause (the disk is a virtual disk, shared from a SAN for VMWare ESXi5.0). An hour after bringing the system back up, we got another one. Same sort of error, different inode. Went to run level 1, and ran fsck manually (running now). I don't see any obvious errors in the vmware-log file for the VM. Or on the SAN. All the other VMs are running fine and I don't see any issues there. Is there a good process to follow when trying to debug an I/O error like this? There are so many variables in this case. Wasn't sure if there were any ext3 utilities that I don't know about but should be using Error: Oct 18 02:52:38 shiva clamd[3978]: SelfCheck: Database status OK. Oct 18 03:00:03 shiva kernel: end_request: I/O error, dev sdb, sector 51083840 Oct 18 03:00:03 shiva kernel: Aborting journal on device sdb10. Oct 18 03:00:03 shiva kernel: ext3_abort called. Oct 18 03:00:03 shiva kernel: EXT3-fs error (device sdb10): ext3_journal_start_sb: Detected aborted journal Oct 18 03:00:03 shiva kernel: Remounting filesystem read-only Oct 18 03:00:03 shiva kernel: EXT3-fs error (device sdb10) in ext3_reserve_inode_write: Journal has aborted Oct 18 03:00:03 shiva kernel: EXT3-fs error (device sdb10) in ext3_reserve_inode_write: Journal has aborted Oct 18 03:02:38 shiva clamd[3978]: SelfCheck: Database status OK.

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Re: [CentOS] Linux Software RAID 1 - Unequal Sized Hard Disks
by Antonio da Silva Martins Junior 18 Oct '12

18 Oct '12

----- "Manish Kathuria" <mkathuria(a)tuxtechnologies.co.in> escreveu: > De: "Manish Kathuria" <mkathuria(a)tuxtechnologies.co.in> > Para: centos(a)centos.org > Enviadas: Quinta-feira, 18 de Outubro de 2012 12:29:02 (GMT-0300) Auto-Detected > Assunto: [CentOS] Linux Software RAID 1 - Unequal Sized Hard Disks > > Has anyone created or rebuilt a Linux Software RAID having mirrored > partitions on unequal sized hard disks ? There is a CentOS 5 server > having two 400 GB hard disks with five mirrored partitions (software > RAID 1) and one of the hard disks is dying. Since new 400 GB HDDs are > not available here, we are exploring the possibility of replacing the > faulty hard disk with one of a higher capacity (500 GB or more). And > once it is fully replicated, we plan to replace the other 400 GB HDD > also with another hard disk of the same higher capacity. > > Just want to know if anyone has done something similar and what are > the chances of success (or data loss) ? > Hi Manish, Well this did work. Remember Linux Soft RAID is for partitions not disks, then, you need to create the new partitions on the bigger drive at the same size of the old ones. Then replicate. When you had changed the two drives you can create a new soft RAID partition on the space leaved. But, if you are already planning on change the two disks. You can mount a new RAID1 schema using the new drives and then copy the data to the new disks. As for guarentee the safest of the data, first backup :D Antonio. -- +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ | Antonio S. Martins Jr. - Support Analyst | "Only The Shadow Knows | | Universidade Estadual de Maringá - Brasil| what evil lurks in the | | NPD - Núcleo de Processamento de Dados | Heart of Men!" | | E-Mail: asmartins(a)uem.br / shadow(a)uem.br | !!! Linux User: 52392 !!! | +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ "Real Programmers don’t need comments — the code is obvious." -- Esta mensagem foi verificada pelo sistema de antivirus e acredita-se estar livre de perigo.

1 0

list of websites visited through centos
by Chaitanya Yanamadala 18 Oct '12

18 Oct '12

Hai i have installed a new centos server and i am planning to use this machine as my gateway and restrict the usage of the certain websites. So i guess basically i am trying to use this machine as my firewall. So could any one guide me on this. How to achieve this. * Chaitanya *

5 4

Re: [CentOS] CentOS 6.3 on Dell Poweredge R815
by Ryan Kohler 18 Oct '12

18 Oct '12

I've had two 64 core R815's for two months and have had no problems with them running CentOS 6.3. Just remember that these are bulldozer's and that for each processor of "16" cores, there are 16 integer cores and 8 shared floating point cores. I would love to get my hands on the sandy bridge r620s with idrac7. Ryan Thank you for the feedback. I also have 6.3 running smoothly on a 2850 > (up till now). I don't expect any major issues with R815's but just > checking in case somebody found otherwise. > > -Surya > > -- > Surya Saha > Department of Plant Pathology > and Plant-Microbe Biology > Cornell University, NY, USA > http://www.linkedin.com/in/suryasaha

1 0

centos 5 and php53
by John R Pierce 17 Oct '12

17 Oct '12

so whats the scoop on PHP53 for CentOS 5? I have a long running webserver, runs a bunch of mostly php+postgresql stuff, mostly hobby sites (clubs and local scout troops and such). has latest updates to php 5.2.10-xx but I want to install something thats insisting on php53. If I try and yum install php53, it says it conflicts with php-5.2.10 ... ok, do I remove the old PHP and install the one one? does that stand a reasonable chance of not blowing up in my face? -- john r pierce N 37, W 122 santa cruz ca mid-left coast

3 8

Rsync - include only files containing matching string
by Sean Carolan 17 Oct '12

17 Oct '12

I have a string, "2012_10_16"; let's call this $YESTERDAY How can I rsync a file tree from a remote machine to the local one, including *only* filenames that contain the matching string? I've read the man page and googled around but can't seem to get the syntax right. I either end up syncing all the files, or none of them. Here's how the code looks now (I will remove the dry run once it is working): rsync -avz --dry-run --include=*$YESTERDAY* remotehost:remotedir/ localdir/transfer/

3 2

Sending Email Via Telnet
by John Reddy 17 Oct '12

17 Oct '12

Hi; I tried this: [root@mydomain ccc]# telnet 127.0.0.1 25 Trying 127.0.0.1... Connected to 127.0.0.1. Escape character is '^]'. EHLO MAIL FROM: me(a)gmail.com RCPT TO: me(a)gmail.com DATA testing from server . ^] but I never get back to a command prompt. Please advise. TIA, John

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