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RAIDs and JBOD?
by James Bensley 17 Nov '09

17 Nov '09

Hey Guys, I have some questions regarding a new home server I am going to build in the hopefully very near future (ASAP, I just need to finish planning everything and this is the penultimate hurdle), I will be creating a software RAID... Lets say I have three drives "knocking" around which are all 1TB SATA II drives but each made by a different manufacturer. I am going to guess that these couldn't be used in a RAID 5? Or could they? However could a similar result of 2TBs of data with redundancy be achieved with JBOD? Also regarding RAID 5, three drives of data to one for parity is the max ratio I believe? I.e. to expand this by adding another data drive, the original parity drive would no longer cover this and another would be required, is this correct? One more question about hot swappable drives, I understand that you can create RAID arrays with and without hot swappable drives but I am confused by this concept. I'm my experience with RAIDs I have only every delt with a RAID 1 that has degraded. I simply set the drive as offline, replaced it, set it to online and the RAID rebuilt itself all without restart the server and operation was never interrupted. So we can presume the server had hot swappable drives enabled yes? (It was a hardware RAID). With a software RAID is this still achievable? Thank you for reading. Regards, James ;) Charles de Gaulle - "The better I get to know men, the more I find myself loving dogs."

11 20

Virtualization option at first install CentOS-5.4 x86_64
by James B. Byrne 17 Nov '09

17 Nov '09

When I choose the virtualization option during the first install of CentOS-5.4 do I get KVM or XEN? Regards, -- *** 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

6 15

errors on multimedia guidance for x86_64
by David McGuffey 17 Nov '09

17 Nov '09

I have a fresh install of 5.4 x86_64 from a dvd .iso. All has worked well for several days, including kvm and WinXP running in a vm. Decided it was time to get the multimedia stuff up and running so I could listen to music CDs and watch DVD movies while working. I followed the guidance on the "Tips and Tricks" page for multimedia. Had no problem with the "priorities" or the rpmforge installs. Here is where it went south: [root@desk Desktop]# yum install libdvdcss libdvdread libdvdplay libdvdnav lsdvd mplayerplug-in mplayer mplayer-gui compat-libstdc++-33 flash-plugin gstreamer-plugins-bad gstreamer-plugins-ugly gstreamer-ffmpeg libquicktime Loaded plugins: fastestmirror, priorities Loading mirror speeds from cached hostfile * addons: yum.singlehop.com * base: mirror.fdcservers.net * extras: mirrors.liquidweb.com * rpmforge: fr2.rpmfind.net * updates: centos.mirror.nac.net 440 packages excluded due to repository priority protections Setting up Install Process ... --> Finished Dependency Resolution gstreamer-plugins-bad-0.10.8-3.el5.rf.x86_64 from rpmforge has depsolving problems --> Missing Dependency: libfaad.so.0()(64bit) is needed by package gstreamer-plugins-bad-0.10.8-3.el5.rf.x86_64 (rpmforge) libquicktime-1.1.3-1.el5.rf.x86_64 from rpmforge has depsolving problems --> Missing Dependency: libfaad.so.0()(64bit) is needed by package libquicktime-1.1.3-1.el5.rf.x86_64 (rpmforge) Error: Missing Dependency: libfaad.so.0()(64bit) is needed by package libquicktime-1.1.3-1.el5.rf.x86_64 (rpmforge) Error: Missing Dependency: libfaad.so.0()(64bit) is needed by package gstreamer-plugins-bad-0.10.8-3.el5.rf.x86_64 (rpmforge) You could try using --skip-broken to work around the problem You could try running: package-cleanup --problems package-cleanup --dupes rpm -Va --nofiles --nodigest The program package-cleanup is found in the yum-utils package. [root@desk Desktop]# First question: Is the guidance for multimedia accurate for an 5.4 x86_64 load? Second question: is rpmforge fully ready for 5.4? Dave

3 5

pan news reader
by MIKE - EMAIL IGNORED 17 Nov '09

17 Nov '09

Does anyone know if the pan news reader works on CentOS 5.4? I am considering installing version 0.132 that I downloaded from pan.rebelbase.com . Thanks for your advice. Mike.

5 6

2 TB limit on USB drive
by Gareth Tupper 17 Nov '09

17 Nov '09

Hallo I submitted this as a bug several weeks ago, but I wanted to ask around & see if anyone else has come across this.... I have a USB Buffalo Drivestation Quattro, with 4 1TB disks configured in raid5 as one 2.8TB (or so) disk, attached to a Cent 5.4 64 bit server (completely yum'd up to date) The disk is labeled as GPT, and formatted as a 2.8 TB ext3 partition (this issue also happens with xfs). I used a gparted boot disk to create the partition. When I attach the drive I see this in messages: Nov 2 14:26:55 kernel: usb 1-5.2: new high speed USB device using ehci_hcd and address 7 Nov 2 14:26:56 kernel: usb 1-5.2: configuration 0000001 <http://bugs.centos.org/view.php?id=1> chosen from 1 choice Nov 2 14:26:56 kernel: scsi5 : SCSI emulation for USB Mass Storage devices Nov 2 14:26:56 kernel: usb-storage: device found at 7 Nov 2 14:26:56 kernel: usb-storage: waiting for device to settle before scanning Nov 2 14:27:01 kernel: Vendor: BUFFALO Model: HD-QSSU2/R5 1 Rev: 2.02 Nov 2 14:27:01 kernel: Type: Direct-Access ANSI SCSI revision: 05 Nov 2 14:27:01 kernel: sdc : very big device. try to use READ CAPACITY(16). Nov 2 14:27:01 kernel: sdc : READ CAPACITY(16) failed. Nov 2 14:27:01 kernel: sdc : status=0, message=00, host=5, driver=00 Nov 2 14:27:01 kernel: sdc : use 0xffffffff as device size Nov 2 14:27:01 kernel: SCSI device sdc: 4294967296 512-byte hdwr sectors (2199023 MB) Nov 2 14:27:01 kernel: sdc: Write Protect is off After this failure, the disk is either a) inaccessible, or b) reports only a 2 TB partition. The latest Ubuntu can read the disk, presenting the full 2.8 TB just peachy. This server is up to date: uname -a: Linux myserver.mydomain.com 2.6.18-164.6.1.el5 #1 SMP Tue Nov 3 16:18:27 EST 2009 i686 i686 i386 GNU/Linux cat /etc/redhat-release: CentOS release 5.4 (Final) [root@myserver ~]# cat /proc/partitions major minor #blocks name ... 8 32 2147483648 sdc << the disk showing incorrectly with only 2TB of storage This bug seems very similar to a previous bug: https://bugzilla.redhat.com/show_bug.cgi?id=502944 which was reported fixed in 5.4 Anyone seen this before, or have any ideas how I can get CentOS to see the disk? Cheers, Gareth

3 2

There isn't package for httpd-2.0.52-41.ent.6.centos4 [centos announce list from 12.11.2009]
by Jancio Wodnik 16 Nov '09

16 Nov '09

Hi. There isn't a package httpd-2.0.52-41.ent.6.centos4 for centos4 in UPDATES repo. There is only a httpd-2.0.52-41.ent.6.centos4.src.rpm in SRC [http://mirror.centos.org/centos/4/updates/SRPMS/?C=M;O=D] This is probably a bug. Package httpd doesn't build ? Jancio Wodnik

4 4

openvpn for CentOS 5.4
by Mike - email ignored 16 Nov '09

16 Nov '09

Where can I get openvpn for Centos 5.4? "yum list openvpn" doesn't find it. Thanks, Mike.

2 1

Question about the ahci kernel module: missing in the CentOS (4) Plus kernel
by Robert Heller 16 Nov '09

16 Nov '09

Is there some reason the ahci kernel module is *missing* from the 2.6.9-89.0.16.plus.c4 kernel? It is in the standard 2.6.9-89.0.16.EL kernel. Is this due to an oversight or is there some sort of conflict? I wanted to add IEEE1394 support to my system running CentOS 4.8. I *looks* like what I need to do is download the kernel SRPM and patch the config to include the IEEE1394 modules and re-build the kernel from source. Arg... -- Robert Heller -- 978-544-6933 Deepwoods Software -- Download the Model Railroad System http://www.deepsoft.com/ -- Binaries for Linux and MS-Windows heller(a)deepsoft.com -- http://www.deepsoft.com/ModelRailroadSystem/

2 3

vsftpd question
by Victor Subervi 16 Nov '09

16 Nov '09

Hi; I've learned how to add a user and change the root dir of vsftpd (which of course is undocumented). Now I need to learn how to make it so that a given user can only access his/her folder (within the root dir). Please advise. TIA, Victor

11 20

Problem with Yum on CentOS 5.4
by Niki Kovacs 16 Nov '09

16 Nov '09

Hi, I recently downloaded and burned the 5.4 DVD ISO. All my machines are now running 5.4, but these are installs I performed with 5.0, 5.1, 5.2 etc. and then progressively upgraded. Now I had to use 5.4 because a friend's laptop, a brandnew Fujitsu Esprimo Mobile, refuses to boot anything under 5.4. After a fresh install of the base system, first thing I do is 'yum update' with the default setup... only this time, nothing happens. I stays about a minute or two on 'Determining fastest mirror'... and then tells me : "Could not retrieve mirrorlist..." On the other hand, 'yum update' on all the other installs (from older CentOS disks) works correctly. What's wrong? Niki

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