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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

17 28

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 ~]#

7 28

rescheduling sector linux raid ?
by Eero Volotinen 14 Feb '11

14 Feb '11

Hi List, What this means? md: syncing RAID array md0 md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc. md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction. md: using 128k window, over a total of 2096384 blocks. md: md0: sync done. RAID1 conf printout: --- wd:2 rd:2 disk 0, wo:0, o:1, dev:sda2 disk 1, wo:0, o:1, dev:sdb2 sd 0:0:0:0: SCSI error: return code = 0x06000000 end_request: I/O error, dev sda, sector 451792231 raid1: sda1: rescheduling sector 451792168 sd 0:0:0:0: SCSI error: return code = 0x06000000 end_request: I/O error, dev sda, sector 451792263 raid1: sda1: rescheduling sector 451792200 raid1: sdb1: redirecting sector 451792168 to another mirror raid1: sdb1: redirecting sector 451792200 to another mirror md: syncing RAID array md0 md: minimum _guaranteed_ reconstruction speed: 1000 KB/sec/disc. md: using maximum available idle IO bandwidth (but not more than 200000 KB/sec) for reconstruction. md: using 128k window, over a total of 2096384 blocks. md: md0: sync done. RAID1 conf printout: --- wd:2 rd:2 disk 0, wo:0, o:1, dev:sda2 disk 1, wo:0, o:1, dev:sdb2 note lines: sd 0:0:0:0: SCSI error: return code = 0x06000000 end_request: I/O error, dev sda, sector 451792263 raid1: sda1: rescheduling sector 451792200 raid1: sdb1: redirecting sector 451792168 to another mirror raid1: sdb1: redirecting sector 451792200 to another mirror Is one disk going down? cat /proc/mdstat still shows software raid array as working one. -- Eero

4 8

ifcfg-rh: error: Missing or invalid IP4 prefix '0
by aurfalien＠gmail.com 14 Feb '11

14 Feb '11

Hi all, I get the following in my logs, seems like its benign but wanted to get any thoughts. nm-system-settings: ifcfg-rh: parsing /etc/sysconfig/network- scripts/ifcfg-bond0 ... nm-system-settings: ifcfg-rh: error: Missing or invalid IP4 prefix '0' I get this for all 4 nics in my bond as well as my loopback. No network issues, all is well. - aurf

1 0

Are some CentOS package out of date compared to RH?
by James Chase 14 Feb '11

14 Feb '11

According to the RH5 Errata, the most recent package for scsi-target-utils is scsi-target-utils-1.0.8-0.el5.x86_64.rpm However the latest update via yum on CentOS is labeled scsi-target-utils-0.0-6.20091205snap.el5_5.3 Additionally, the package info says it is not compatible with iSCSI yet, which is false! There were some critical updates for this package according to RedHat, so how can I be sure that I am at the correct version? In looking at some other packages on my CentOS system, like httpd, I am noticing they are also out of date in regards to Red Hat updates. Is this common? Name : scsi-target-utils Arch : x86_64 Version : 0.0 Release : 6.20091205snap.el5_5.3 Size : 143 k Repo : updates Summary : The SCSI target daemon and utility programs URL : http://stgt.berlios.de License : GPLv2 Description: The SCSI target package contains the daemon and tools to setup a : SCSI targets. Currently, software iSCSI targets are supported.

2 2

sandboxie like application for CentOS?
by erikmccaskey64 14 Feb '11

14 Feb '11

http://www.filehippo.com/download_sandboxie/ It's a great application [ for windows... :\ ] Are there any programs under CentOS, that has the ~same features? To be specific: The user could launch a program [e.g.: Google Chrome] inside this sandbox, and when he/she exits Google Chrome, all the changes that Google Chrome did is "undoed". + Google Chrome is in a sandbox, so it can't "see"/read the files of the user! Thanks for any tips, link, opinions!

3 2

java please help
by ann kok 14 Feb '11

14 Feb '11

Hi I use yum to install openjdk 1.6.0 in centos5.5 but the firefox browser still says that JRE not installation / Java is disabled Can you help

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