最近爱上RedHat Linux，因为他的GUN精神，于是在努力学习，是用虚拟机装的，怕木有办法直接驾驭这个性格有点怪但是很有魅力的系统，开机时总是显示smartd进程失败，于是找到相关技术文章，分享下。
其实还有个问题，我的Linux没有声音，声卡是正常的，但测试声音就是没有，下一个目标就是解决这个，呵呵~~
smartd是一个守护进程（一个帮助程序），它能监视拥有自我监视，分析和汇报技术(Self-Monitoring,Analysis, and Reporting Technology – SMART)的硬盘。SMART系统使得硬盘能监视并汇报自己的运行状况。它的一个重要特性是能够预测失败，使得系统管理员能避免数据丢失。smartd由kernel-utils包缺省安装。用命令 rpm -ql kernel-utils 可以列出kernel-utils包中的文件。smartd守护进程通常在系统启动的时候被开启，它的配置文件是/etc/smartd.conf。比如，假设有两个硬盘被安装，/dev/hda和/dev/hdb。一个是CD_ROM设备，另一个是硬盘。为了检测它们是否支持SMART，使用命令 smartctl -i /dev/hda 和 smartctl -i /dev/hdb：# /usr/sbin/smartctl -i /dev/hdasmartctl version 5.1-11 Copyright (C) 2002-3 Bruce AllenHome page ishttp://smartmontools.sourceforge.net/
=== START OF INFORMATION SECTION ===Device Model: ST380011ASerial Number: 3JVB672NFirmware Version: 8.01Device is: Not in smartctl database [for details use: -P showall]ATA Version is: 6ATA Standard is: ATA/ATAPI-6 T13 1410D revision 2Local Time is: Fri Aug 20 14:09:16 2004 ESTSMART support is: Available – device has SMART capability.SMART support is: Enabled”SMART support is: Available – device has SMART capability.“这行说明支持SMART。”SMARTsupport is: Enabled”这行说明SMART已经被打开。CD-ROM设备和旧式的硬盘不支持SMART，这可以从smartctl -i /dev/hdb的输出看出：# /usr/sbin/smartctl -i /dev/hdbsmartctl version 5.1-11 Copyright (C) 2002-3 Bruce AllenHome page ishttp://smartmontools.sourceforge.net/
=== START OF INFORMATION SECTION ===Device Model: LTN526DSerial Number: [No Information Found]Firmware Version: 9S03Device is: Not in smartctl database [for details use: -P showall]ATA Version is: 1ATA Standard is: Exact ATA specification draft version not indicatedLocal Time is: Fri Aug 20 14:24:43 2004 ESTSMART is only available in ATA Version 3 Revision 3 or greater.We will try to proceed in spite of this.SMART support is: Unavailable – device lacks SMART capability.A mandatory SMART command has failed: exiting. To continue, use the -Toption to set the tolerance level to ‘permissive’注意有些硬盘控制器不支持SMART。比如有些硬件RAID控制器不支持，或者不会传递SMART信息，即使加入的硬盘支持SMART。可以修改/etc/smartctl.conf文件，使得smartd只监视你想监视的设备。假设只有/dev/hda需要被监视，在该设备上如果有警告信息发生，需要把它发给根用户，那么/etc/smartd.conf需要这样修改：
# /etc/smartd.conf# Sample configuration file for smartd. See man 5 smartd.conf.# Home page is:http://smartmontools.sourceforge.net…# A very silent check. Only report SMART health status if it fails# But send an email in this case/dev/hda -a -mroot@localhost.localdomain…编辑完/etc/smartd.conf，重启该守护进程：
# /sbin/service smartd restartShutting down smartd: [FAILED]Starting smartd: [ OK ]要设置smartd在系统启动时候被激活，在根用户下用 chkconfig smartd on 命令。
关闭smartd服务自动启动root LINUX smartd is a daemon that monitors the Self-Monitoring, Analysis and ReportingTechnology (SMART) system built into many ATA-3 and later ATA, IDE and SCSI-3 hard drives. The purpose of SMART is tomonitor the reliability of the hard drive and predict drive failures, and to carry out different types ofdrive self-tests. This version of smartd is compatible with ATA/ATAPI-7 and earlier standards简单地说，smartd是监控硬盘的可靠性并预测其失败、进行测试的守护进程！仔细看看smartd的说明即可！（man smartd）＃chkconfig smartd off这是关闭smartd服务自动启动，机器重新启动时smartd不再运行！
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松树亭亭玉立的耸立在周围小草小花的中间，
