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34753 discussions

hotplug in centos 5
by aurfalien＠gmail.com 16 Feb '11

16 Feb '11

Hi, I've a specific need for hotplug but found Centos doesn't ship it with the kernal and that such tasks are handled by HAL. Any one have ideas on how to get hotplug functioning in Centos 5.5? Thanks in advance, - aurf

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what is the best RPM finder?
by Larry Vaden 16 Feb '11

16 Feb '11

thanks/ldv

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Insert the second CD of an install
by Mike VanHorn 15 Feb '11

15 Feb '11

Using CentOS 5.5 x86_64. I am trying to install software that comes on two discs. I can start the install just fine, but when it comes to taking out the first disc and putting in the second, the system won't let me eject it. I remember reading something on the internet once about something needing to be enabled to allow this to work, but I can't find it now. Does anybody have a clue as to what I might be looking for? (Yes, the work around is to just mount both ISOs and not use real discs at all, but as administrator I understand that process and my users won't. However, they are familiar with the process of inserting disks.) Thanks! --- Mike VanHorn Senior Computer Systems Administrator College of Engineering and Computer Science Wright State University 265 Russ Engineering Center 937-775-5157 michael.vanhorn(a)wright.edu RSS: http://www.engineering.wright.edu/~mvanhorn/MikeVanHorn'sNewsFeed.xml http://www.engineering.wright.edu/~mvanhorn/

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install 5.5 x86-64 on DL320 G6
by Jerry Geis 15 Feb '11

15 Feb '11

I am trying to install on a DL320 proliant. The disk is not being recognized. It fails when setting up disk with "no devices" found. I dont get an sda or cciss either one. I tried to disable the on board smart array controller? That didnt seem to make a difference. Is there something special I need to do? Thanks, jerry

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User Details
by James Bensley 15 Feb '11

15 Feb '11

I have some questions on how I can perform the following actions from the terminal in CentOS 5.5 final. My Google searches aren't helping and I keep seeing references to the command 'useradd' but this isn't present on my box; -How to add a new user? $ useradd -bash: useradd: command not found (This is the same for my normal user and when logged in as root) -How to set/change an existing users home folder path -How to list all users -How to list all groups Sorry if this seems trivial but I am actually stuck on this :) -- Regards, James. http://www.jamesbensley.co.cc/ There are 10 kinds of people in the world; Those who understand Vigesimal, and J others...?

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Most efficient/fastest way to see disk usage
by Fajar Priyanto 15 Feb '11

15 Feb '11

Hi all, I use this command to see disk usage: du -cks * | sort -rn | while read size fname; do for unit in k M G T P E Z Y; do if [ $size -lt 1024 ]; then echo -e "${size}${unit}\t${fname}"; break; fi; size=$((size/1024)); done; done The data itself is around 200GB with lots of subdir and small files. The command takes for about 1 hour to finish. Is there a faster way to see the disk usage of some directories? Secondary objective is: To see which directories have changes (added/remove subdir/files) comparing to the previous data. I'm thinking of using "ls -laR" and "diff". But not sure. Thank you.

2 1

how do export a block device via eSATA?
by Rudi Ahlers 15 Feb '11

15 Feb '11

Does any one know how to, if at all possible currently, to export a block device via eSATA? i.e. how do I do something like iSCSI, but over eSATA? I have a cheat ($15 probably?) media player at home (Egreat EG-M31B Network Media Tank - awesome little machine) that runs some flavor of Debian and can be connected to any PC via eSATA as an external HDD's. i.e. it exports the built-in HDD as a block device to the host (My laptop or PC). Now, the question is, how can I do this on Linux? Would I need a different eSATA card than the on-board eSATA port on most motherboards? Or would the on-board one work? The question is, how do I tell Linux to export a file system, or block device via the eSATA port? If any one has attempted this before, then please share some knowledge or pointers on the subject. I couldn't find anything using google, but I may not necessarily have searched for the correct terms? -- Kind Regards Rudi Ahlers SoftDux Website: http://www.SoftDux.com Technical Blog: http://Blog.SoftDux.com Office: 087 805 9573 Cell: 082 554 7532

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server specifications
by Michel Donais 14 Feb '11

14 Feb '11

Did somebody can give me some advises on hardware for building a Centos linux server? --- Michel Donais

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Journal Aborts in VMware ESX (Filesystem Corruption)
by Adam Tauno Williams 14 Feb '11

14 Feb '11

I have several CentOS5 hosts in a VMware ESX 3.5.0 226117 environment using iSCSI storage. Recently we've begun to experience journal aborts resulting in remounted-read-only filesystems as well as other filesystem issues - I can unmount a filesystem and force a check with "fsck -f" and occasionally find errors. I've found - <https://bugzilla.redhat.com/show_bug.cgi?id=228108> <http://kb.vmware.com/selfservice/microsites/search.do?language=en_US&cmd=di…> - which seem related but I believe I am running a kernel that contains these fixes. My kernel is 2.6.18-194.32.1.el5 on one of the most effected hosts. Does anyone else have experience with similar issues or know of the status of this Bug/KB? I can install, boot, run, and then at some seemingly random moment - init_special_inode: bogus i_mode (50632) init_special_inode: bogus i_mode (137147) init_special_inode: bogus i_mode (172036) init_special_inode: bogus i_mode (175720) init_special_inode: bogus i_mode (72350) init_special_inode: bogus i_mode (174751) EXT3-fs error (device sdb2): ext3_lookup: unlinked inode 19698169 in dir #19696695 Aborting journal on device sdb2. init_special_inode: bogus i_mode (165661) EXT3-fs error (device sdb2): ext3_lookup: unlinked inode 19698131 in dir #19696695 init_special_inode: bogus i_mode (76763) init_special_inode: bogus i_mode (3116) init_special_inode: bogus i_mode (75363) init_special_inode: bogus i_mode (77034) init_special_inode: bogus i_mode (132237) EXT3-fs error (device sdb2): ext3_lookup: unlinked inode 19698139 in dir #19696695 init_special_inode: bogus i_mode (53031) init_special_inode: bogus i_mode (33361) init_special_inode: bogus i_mode (77546) init_special_inode: bogus i_mode (6516) EXT3-fs error (device sdb2): ext3_lookup: unlinked inode 19698143 in dir #19696695 init_special_inode: bogus i_mode (6442) init_special_inode: bogus i_mode (72554) EXT3-fs error (device sdb2): ext3_lookup: unlinked inode 19698142 in dir #19696695 EXT3-fs error (device sdb2): ext3_lookup: unlinked inode 19698164 in dir #19696695 init_special_inode: bogus i_mode (73171) init_special_inode: bogus i_mode (154432) init_special_inode: bogus i_mode (34302) init_special_inode: bogus i_mode (131733) init_special_inode: bogus i_mode (30773) ext3_abort called. EXT3-fs error (device sdb2): ext3_journal_start_sb: Detected aborted journal Remounting filesystem read-only

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CentOS 64 bit php 5.2 huge problem
by Peter Ivanov 14 Feb '11

14 Feb '11

Hello, i am getting the following error in CentOS 64 bit with php 5.2 I cant get mysql functionality running and the ioncube loader Please help, i am very desperate Here is my output: [root@host ~]# php -v Failed loading /usr/local/ioncube/ioncube_loader_lin_5.1.so: /usr/local/ioncube/ioncube_loader_lin_5.1.so: undefined symbol: zend_unmangle_property_name_ex PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/mysql.so' - libmysqlclient.so.15: cannot open shared object file: No such file or directory in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/mysqli.so' - libmysqlclient.so.15: cannot open shared object file: No such file or directory in Unknown on line 0 PHP Warning: PHP Startup: Unable to load dynamic library '/usr/lib64/php/modules/pdo_mysql.so' - libmysqlclient.so.15: cannot open shared object file: No such file or directory in Unknown on line 0 PHP 5.2.10 (cli) (built: Nov 13 2009 11:44:05) Copyright (c) 1997-2009 The PHP Group Zend Engine v2.2.0, Copyright (c) 1998-2009 Zend Technologies with the ionCube PHP Loader v4.0.1, Copyright (c) 2002-2010, by ionCube Ltd. [root@host ~]#

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