Blogs

Linus Torvalds explains how the word should be pronounced.

I was only using a part of my external usb hard drive to keep backups and needed to extend the partition to accomodate the ever-growing backup files.

There are quite some ways to do this which can be referenced at FedoraNews.org and TLDP.org .

Below is a quick command line reference if you are familiar with the process already.

1. I added an additional 10GB of space:
   

   # lvextend -L+10G /dev/vg00/lvol0
   

2. Unmount the drive:

   # umount /mnt/usbdisk
   

3. Check the logical volume:

   # e2fsck -f /dev/vg00/lvol0
   

4. Increase the file system size to match.

   # resize2fs -pf /dev/vg00/lvol0
   

5. Remount:

   # mount /mnt/usbdisk
   

转载请

from:http://geekblog.oneandoneis2.org/index.php/2006/08/17/why_doesn_t_linux_need_defragmenting
It's a question that crops up with depressing regularity: Why don't Linux filesystems need to be defragmented?. Here's my attempt at giving a simple, non-technical answer as to why some filesystems suffer more from fragmenting than others.

Rather than simply stumble through lots of dry technical explanations, I'm opting to consider that an ASCII picture is worth a thousand words. Here, therefore, is the picture I shall be using to explain the whole thing:

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This is very good tutorials for bandwidth monitoring,network monitoring and servers monitoring tools with clear step by step installation guides this includes Nagios,MRTG,RTG,Netmrg,Darkstat,monit,munin,mon,oreon,Saidar ,Cacti,Bigsister,ibmonitor,zabbix.This resouce is Very useful for Users and Administrators to monitor their networks,bandwidth and servers.

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Oreon© is an Open Source monitoring solution based on Nagios. It offers to this monitoring standard a new front end and brings it a panel of new functionalities.

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ZABBIX is a 24×7 monitoring solution without high cost.

ZABBIX is software that monitors numerous parameters of a network and the health and integrity of servers. ZABBIX uses a flexible notification mechanism that allows users to configure e-mail based alerts for virtually any event. This allows a fast reaction to server problems. ZABBIX offers excellent reporting and data visualisation features based on the stored data. This makes ZABBIX ideal for capacity planning.

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This is a rather long (approx 1 hour) but very informative video lecture by Richard Stallman at the Australian National University in Canberra, October 2004 -- on the free software movement and the GNU/Linux Operating System.

Topics covered include free software development, privacy, copyright, the history of GNU, Linux, and the GNU/Linux operating system.

Recently, I've been involved in developing the website for ext2read. It is a windows explorer like application from where you can read ext2/ext3 partitions. Simply download the exe and run it. It will automatically scan your file system for any ext2/ext3 partitions and list it.

Simple Network Management Protocol (SNMP) is a widely used protocol for monitoring the health and welfare of network equipment (eg. routers), computer equipment and even devices like UPSs. Net-SNMP is a suite of applications used to implement SNMP v1, SNMP v2c and SNMP v3 using both IPv4 and IPv6.

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