CentOS 5 :: Is Ext4 Available In CentOS 5.3?

Apr 1, 2009

Is ext4 available in CentOS 5.3 ?

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CentOS 5 :: Any Possibility To Install Centos 5.5 On Ext4 By Anaconda?

Jul 14, 2010

It is any possibility to install centos 5.5 on ext4 by anaconda ? Is ext4 filesystem is secure for files server (samba) ?? In anaconda installer there is only ext2, ext3 choice.

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CentOS 5 Server :: Can't Mount Ext4 Filesystem In Centos 5.6?

Sep 7, 2011

Summary of issue: EXT4 filesystem won't mount--with error = mount: unknown filesystem type 'ext4'. Is no ext4 in kernel the issue? Or is something corrupted?Really perplexed by this. I updated Centos 5.5 to 5.6 to get ext4 (5.6 is supposed to have full support of ext4). I built several arrays and put the ext4 filesystem on them. All went well until I tried to mount them. BTW, this array (below) is set up as a RAID6 using partition 1 of #8 2TB drives.Bear with me here; just trying to be complete and not waste your time.

Attempting to mount give this:[root]# mount -v /dev/md1 /asc/array1mount: unknown filesystem type 'ext4'Note: it does "fake" mount with ption (which apparently does everything except the system call):[root]# mount -f -v /dev/md1/dev/md1 on /asc/array1 type ext4 (rw,grpquota,usrquote)e2fsprogs:Package e2fsprogs-1.39-23.el5_5.1.x86_64 already installed and latest version (for Centos 5.6; CentOS 6x uses the 1.41...)

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CentOS 5 :: 5.5 Ext4 Conversion - Ext4 Partition Is Recognized As Ext3?

May 19, 2010

I had 5.4 machine. Upgraded to 5.5 today via yum upgrade. All went fine. Rebooted. Wanted to convert root partition to ext4 (I have three partitions: /boot, / and swap). All of them on software RAID 1 (root is /dev/md2). I did the following for converting

yum install e4fsprogs
tune2fs -O extents,uninit_bg,dir_index /dev/md2
nano /etc/fstab # I indicated here that my /dev/md2 is of ext4

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CentOS 5 :: Reverting From Ext4 To Ext3

Oct 5, 2010

I'm using CentOs 5.4 (2.6.18-164.15.1.el5 #1 SMP Wed Mar 17 11:30:06 EDT 2010 x86_64). I tested out ext4 on a partition for the last few months and it seems to work fine. The issue is that quotas dont seem to work correctly on it. Is there a way to revert back to ext3? Mainly the quota tools do not work on it.

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CentOS 5 :: Install 5.5 On SSD Using Ext4 And TRIM

Dec 18, 2010

I am trying to set up an atom D525 low power PC 64-bit with a 40 GB solid state disk drive. Is it possible to specify ext4 during the install for proper SSD suupport? I read somewhere that after install I can place a -discard line in fstab to enable trim.

Edit: should I have asked this in the x86_64 forum, as I was planning on installing 64 bit?

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CentOS 5 :: Ext4 For 5.4 - Non-bootable Addon Or GRUB Boot Off It?

Jul 6, 2009

I am noticing RHEL 5.4 is in beta. Does anyone know what 5.4's plans are for ext4? Is it still going to be a non-bootable addon? Or, will GRUB now boot off it?

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CentOS 5 :: 5.5: Migrating Root (and Any Other) Partition From Ext3 To Ext4?

May 20, 2010

With the release of CentOS 5.5 ext4 is considered stable in this distribution so I decided to migrate to it. Luckily I started from migrating fresh server with CentOS 5.5 using some instruction I found on the internet. I think I shouldn�t say, that I screwed the whole thing up ;) After about 6 hours cursing, kicking, and crying I solved the task and figured the correct sequence of actions. The small problem with migrating root partition is that you can�t unmount it BTW.

During migration task, I found, that CentOS 5.5 rescue mode is somewhat broken a little in terms of ext4 support. It can mount ext4 partitions successfully. But its e2fsprogs package (tune2fs, e2fsck etc.) doesnt see ext4 partitions and say, that superblock is corrupted on a partition once is converted to ext4 (at least it did it for me. May be I should force filesystem type with -t ext4 switch?). Keep in mind, that if you screw your system up too badly, you will not be able to run tune2fs and e2fsck on it from rescue modeBut you will still able to mount it if it is not corrupted badly. In all below examples,Boot your system normally and login as root. Upgrade kernel if you wish (I usually use yum upgrade to upgrade all on new machines). Then upgrade/install some other packages

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CentOS 5 Hardware :: 5.5 Ext4 Related Server Crash?

Aug 13, 2010

I have installed 2 extra 1.5TB drives on a stable Centos 5.5 system. They are set up with 2 unequal partitions on each - with 2 raid 1 arrays. The largest of the raid arrays is used as a new volgeoup with 2 unequal LVMs. The larger of the LVMs is around 1.3TB. I installed an ext4 filesystem (default parameters) on the larger LVM.I went to mount the LVM - the system hung. No keyboard or network response and no response to the soft shutdown button.It was the deadest I have ever seen it - and this system has been incredibly stable.

In the absence of any other suspects - I am tempted to blame ext4 - since I have never used it before - and since wikapeadia tells me ext4 isn't supposed to be in the 2.6.8 kernels...:

[URL]

I will do some more testing on this tomorrow to try to confirm my suspicions. I will try to repeat the crash - then try mounting it as ext3 to see if it behaves differently. Any other tests I should do?What is the status of ext4 in RHEL5.5. Has it been added to the 2.6.18 kernel by RH? Is this what is meant by a "back port"?

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CentOS 5 :: Which File System Use 5.6 By Default Ext3 Or Ext4

Aug 29, 2011

Which file system uses Centos 5.6 by default, Ext3 or Ext4? I have installed on Ext3, it's upgrade from 5.5, but howto convert into Ext4 without damage or lost data?

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CentOS 5 :: Ext4 And Moving Items To The Trashcan In Gnome Results In Nothing Showing In The Desktop Trashcan

May 21, 2010

On my home test 5.5 VM, after converting to ext4, moving items to the trashcan in Gnome results in nothing showing in the desktop Trashcan. Looks like a bug in gnome-vfs' support (or lack of it) for ext4, or have I got some other more subtle corruption going on? It's of little importance to me as I'm rarely in the GUI, but it would be nice to see confirmation or otherwise.

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CentOS 5 :: Installation Of Guest CentOS 5.5 DomU On Centos 5.5 Xen Dom0?

Aug 4, 2010

Problems with xen 3.1.2 creating and installing domU CentOS 5.5 I am trying to do a virt-install --prompt --paravirt, and the install error out while trying to download install RPMs. I have googled for xen centos virt-install and various permutations. I have found similar howtos for 5.4 and 5.3, but they resulted in the same outcome. I did find several posts with similar issues, but no solution was posted.[URL]..

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CentOS 5 :: Centos 5.5 X86_64 Or Centos 5.5 I386 - Difference Between The Two Versions?

Feb 9, 2011

I am in the process of building a new server on an Asus P5QPL-AM motherboard and an Intel E8600 processor.explain to me the difference between the two versions and what would you recommend.Also, is there any advantage of SATA over IDE hard drives?

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Server :: Unifying Permissions Between Two Servers - CentOS - Webmin/CentOs - Cpanel - And Rsync

Jan 1, 2010

I have two servers, both running CentOS, but one running Cpanel as the control panel and the other running Webmin.

I would like to sync the web folders using rsync. However, when I sync the files from the Cpanel host the permissions look as follows:

Code:

But that doesn't work on the Webmin server which needs the following:

Code:

It seems the Cpanel install has the group as 'nobody' whilst webmin has it the same as the file owner. I can fix this by running:

Code:

But as the file transfers will be frequent, I don't want the files to be inaccessible until chown is run.

So, what I really want to know is - how can I change things on the 'webmin' server so that files with ownership owner:nobody will run?

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CentOS 5 Hardware :: Error Installing CentOS 5.2 On ICH7R With 4 SATA HDDs RAID 5?

Feb 15, 2009

The installer can't see my raid controller (I assume) as I'm getting the following error:"Error opening /dev/mapper/isw_jbhgjgjj_Vol0: No such device or address"It just sees them as 4 individual drives: sda, sdb, sdc and sdd.Please note that I have set up the RAID 5 in the controller bios interface and the image name is Vol0, which it seems that it tries to load but for some particular reason it can't.I have also tried different bios settings and nothing worked.

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CentOS 5 Networking :: Fails At Determining IP Information For Eth0 (onboard NIC Asus P6T On Centos 5.3)?

Apr 28, 2009

I'm running a fresh install on an intel i7 system on an asus p6t deluxe v2 motherboard with the onboard NIC (Marvell Technology pci-e). I know the NIC is working as when I boot into the onboard OS that Asus provides (Asus Express Gate SSD)I have a working net connection.Booting up CentOS hangs at determining IP information for eth0 and eventually fails with the following error:PING xxx.170.30.1 from xxx.170.31.231 eth0: 56(84) bytes of data---xxx.170.30.1 ping statistics ---4 packets transmitted, o received, +3 errors, 100% packet loss, time 2999ms, pipe 3 failed.

RTNETLINK answers: file exists.
RTNETLINK answers: file exists.
RTNETLINK answers: file exists.

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CentOS 5 :: Booting CentOS V5.2 Fails With GRUB Error 13: Invalid Executable Format?

May 5, 2009

I'm trying to install a dual booting machine with OpenSUSE v11.1 32bit and CentOS v5.2 64bit. I installed OpenSUSE first and allowed it to install and configure grub in the MBR and after that I wanted to proceed with CentOS v5.2. The installation went fine with two notable exceptions:- when I had to configure grub installation parameters, CentOS offered me only 2 solutions: either install it on the MBR of the first hard disk or not installing it at all. Other distributions are more flexible allowing you to install it in the boot sector of the root partition for example. Because I didn't want to ruin the existent grub onfiguration, I reluctantly accepted not to install it for CentOS assuming that I could manually configure the entry later in grub's menu.lst file.

- when I was presented with the options for software components installation, I've clicked on virtualization category/function because I intend to use the machine as a VMware host. There was no guidance on screen at that point and I blindly assumed that by choosing the virtualization function I would get necessary tools and drivers that will help me further on. It seems that this was a wrong move as you can see it below.

After completing the installation, I tried to search for a template or guiding on how the menu entry in menu.lst should look like but the grub directory was empty, not surprisingly because I've told CentOS earlier not to install it. Using the files in the /boot directory from the CentOS installation I tried to improvise a menu entry but it's not working. The boot stops with famous Error 13: Invalid or unsupported executable format. Using the file command to check what kind of files I'm trying to load as kernels I'm getting :

marte:~ # file /mnt/vmlinuz-2.6.18-92.el5xen
/mnt/vmlinuz-2.6.18-92.el5xen: gzip compressed data, from Unix, last modified: Tue Jun 10 19:20:51 2008, max compression

[code]....

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CentOS 5 :: Kernel Panic Not Syncing No Init After Fresh Install Centos 5.3 Iscsi?

Jul 9, 2009

The first server I installed installed fine. The second server, installed with the same config, went to "kernel panic not syncing no init found try passing init= option in kernel" error. I tried reinstalling but it keeps going to that error after install reboot. The storage is ISCSI connected via Intel Server Adapter, which allows it to boot from ISCSI. Not sure if that's the cause for the problem, but the first server is connected to the same ISCSI and installed just fine.

Is there a way that I can make sure ISCSI module installs during installation? Although I think it is installed since it's able to copy the files and setup /dev/sda. I just wana make sure that it installs during setup.

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CentOS 5 :: Create A CentOS Based LiveCD That Mounts A NFS Share And Executes One Script?

Aug 14, 2009

I'm trying to create a CentOS based liveCD that mounts a NFS share and executes one script there. The NFS never mounts altough while logged I can mount it with the very same command that I use in the KS.

In the %post I have :

%post --log=/tmp/post.log --erroronfail
mkdir /mnt/nfs
mount -o nolock 10.23.1.1:/csc/RemoteHome /mnt/nfs

I added the --log in order to debug, but nothing is written in /tmp/post.log. I tried redirection on the mount command with >> /tmp/debug.log but this is not written. Maybe during the post sequence /tmp is RO ? Anyway, I tried with ifup lo, service portmap start in the %post, but doesnt change (I even have a service : command not found in the live cd creator output).

Here is the remainder of the KS :
lang en_US.UTF-8
keyboard us
timezone US/Eastern

[Code]...

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CentOS 5 Hardware :: Z-Star Microelectronics Corp. USB 1.1 Webcam - Get Running With CentOS 5.4 X86_64?

Oct 30, 2009

I've got two USB webcams I'm trying to get running with CentOS 5.4 x86_64. I've downloaded and installed the gspca driver from http://mxhaard.free.fr/spca5xx.html. Running lsusb yields:

Bus 002 Device 003: ID 0ac8:307b Z-Star Microelectronics Corp. USB 1.1 Webcam
Bus 002 Device 002: ID 0ac8:307b Z-Star Microelectronics Corp. USB 1.1 Webcam

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CentOS 5 Hardware :: Where To Get Atheros AR8121/8113/8114 Ethernet Drivers For CentOS 5.3?

Dec 21, 2009

I have installed CentOS 5.3 on my PC which has an Atheros AR8121/8113/8114 Gigabit Ethernet. Unfortunately 5.3 has no drivers for this LAN Card. I searched the Google for drivers but was unable to find any. Does the 5.4 has them? If yes then how can i upgrade it to 5.4 without Network connectivity?

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CentOS 5 :: CentOS 5 Home Server Power Consumtion? (features, Kernel Versions Etc.)?

Feb 28, 2010

I built a home server (NAS/WWW/SSH/media server etc) and chose CentOS 5 as the OS (stability, easy of configuration).I was just about to start tuning the power consumption when I realised that the kernel CentOS uses is so "old" that it does not support the latest reduced power consumption enhancements that Linux has achieved in big strides in the recent past (we are probably still talking 6-12+ months ago e.g. tickless kernel)..

So my questions; 1) I know CentOS was maybe not meant for home servers (certainly its not its primary purpose), but if it is, any ideas of what kind of power consumption it takes (I know its relative) and if there are particular power consumptions that are worthwhile?

2) Do you recommend me compiling my own 2.6.21+ kernel from kernel.org or am I just likely to have compatibility issues (I really did not want to do that) or when is CentOS 5.4 supposed to have a newer 2.6.21+ version kernel?

Was it wrong of me in principle to choose CentOS for a home server when I am power conscious? (I don't have a low-power VIA processor either but a P4 so I am really just hoping to make do with software changes).

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CentOS 5 Server :: Building VMWare Virtual Machines From CentOS Mail Servers?

Oct 12, 2010

I have a few mail servers, a mail log server and a web server running on Centos 5. Now I have a task: to avoid accidental crashes on the production servers while installing updates, my boss asked me to do clones (these clones will all be VMware virtual machines) of the servers (EXCLUDING the actual e-mails and log contents) and then to run those clones on VMWare Server. This way, first I will install and test updates on the clones and - if they will be running without crashes - I will apply the updates on the real production servers themselves.

I have already installed VMWare Server 2.0 I have a few questions: How do I build the virtual machines to exclude the actual mail files and mail logs? Can I use VMware Converter for this purpose, or do I have to use another program? How do I actually do this cloning? Is there a tutorial on how to do this?

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CentOS 5 Networking :: Centos 5.2 / Hyper-V/ Bridge With Synthetic Adapters Does Not Work?

Jan 27, 2009

I have a Centos 5.2 VM running under Windows 2008 Hyper-V. If I add two "legacy Nic's" and bridge them, everything appears to work fine. However, if I remove the legacy nics and replace them with two synthetic nics (linux integration components), the nics seems to function fine UNTIL I add them to a bridge.This VM will eventually be used as a DansGuardian/Squid transparent proxy for a local library. The logical layout is represented by the attached jpg image. I have also included the ifcfg- scripts for the adapters and bridge for both scenarios.It would also be useful if someone else has Hyper-V with the integration components and dual physical nics to see if they can reproduce my symptoms on their box.Legacy Adapters:

ifcfg-br0:
DEVICE=br0
BOOTPROTO=dhcp

[code]....

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CentOS 5 Server :: Sshd Ldap Auth Works On Fedora 10, But Not In Centos 5.2?

Mar 17, 2009

If I ssh from my laptop (running F10) to the server (centos 5.2) it asks for the password, but everytime I enter the correct password it says incorrect password. when I do the same from the server to my laptop I can get in just fine. I think my passwords are stored as ssha in the LDAP (I tried clear passwords and that dosen't work either).

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CentOS 5 Hardware :: Cannot Get CentOS 5 And Agere Et131x Network Card To Work?

May 1, 2009

I just have CentOS installed and cannot get the Agere et131x network card to work.I have tried the following:Reboot the computer and still did not see the network hardware.

Fai
lspci
Quote:

[code]....

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CentOS 5 Server :: Can't Install Debian Xen Guest With Virt-installer [Centos 5.3]?

May 3, 2009

I have tried to install debian 5.0 and 4.0 without any luck. I have both tried virt-manager and virt-install with both debian-501-i386-netinst.iso, and full dvd. I't always gives me the same error:Starting install.Could not find an installable distribution at '/xen/debian-501-i386-netinst.iso'

[Code]...

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CentOS 5 Hardware :: Attansic L2 Fast Ethernet On ASUS P5GC MX - CentOS 5.3?

May 4, 2009

I was try to compile the drirver from cd asus, but my lan card still not detected in centos 5.3. when i bringing up eth0 its show like : "the atl2 device eth0 does not to be present, delaying initialization."iwas suft on google some driver but all driver just to centos 5.3 when i install the rpm it does not work. i love centos i dont want to change my lovely centos.

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CentOS 5 Hardware :: Fresh Install Of Centos Doesnt Display On Whole Screen?

Jun 8, 2009

i didnt find a solution to a display problem im having. my server mobo is an asus k8n-dre with built in video. after the install(using built in video) the screen dosnt display fully as in black sections on the left and top of the screen. from the searching i did i found something about an "xrandr" command that would let me change the video settings but it didnt do anything with the black areas when i tried it. i also have a nvidia geforce 9500gt video card so i changed the jumper to boot from it and tried again. the black sections are still there but the centos display covers much more of the screen now. theres still about a third of an inch gap on the left hand side and about 1/4 of an inch on the top. ive also tried updating the software to see if it may be a driver issue but no luck. anyone know how or if it can fit to full sceen? the screen displays up to 1440x900 if im not mistaken but with the built in video it gave me lots of display options including the 1440x900. after changing to the nvidia card it only shows 800x600 and 640x480.

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CentOS 5 :: Conga Errors With Enabled Shared Storage Support In CentOS 5.3?

Jun 24, 2009

I try to set up a 5 nodes cluster and a shared Coraid Storage with conga but it fails with "Shared Storage Support" checked.The message is:'A problem occurred when installing packages: Packages of set "Clustered Storage" are not present in available repository' and it is shown under every node on the next sceen after I submit.The pc where conga runs is on the same subnet (192.168.xxx.xxx) and it has the same /etc/hosts of the other nodes.In that pc runs a proxy too and the nodes go out through it (that pc has 2 NICs)Every node (2.6.18-128.1.14.el5-xen-x86_64) is patched whith the last yum update (this morning) the same is for the pc (2.6.18-128.1.14.el5).Every node has 4 NICs , 2 NICc towards the storage the others in bonding towards the WAN.Every node is exactly alike, they have been installed with the ks.cfg generated from the first node and they all have the support for Clustering, Virtualization, and Clustered Storage.

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