简介
MegaCli是一款管理维护硬件RAID软件,可以通过它来了解当前raid卡的所有信息,包括 raid卡的型号,raid的阵列类型,raid 上各磁盘状态,等等。通常,我们对硬盘当前的状态不太好确定,一般通过机房人员巡检来完成,有没有通过软件的方式来检查确定这个问题呢。MegaCli就可以做到,一般通过 MegaCli 的Media Error Count: 0 Other Error Count: 0 这两个数值来确定阵列中磁盘是否有问题;Medai Error Count 表示磁盘可能错误,可能是磁盘有坏道,这个值不为0值得注意,数值越大,危险系数越高,Other Error Count 表示磁盘可能存在松动,可能需要重新再插入。MegaCli 可以对阵列中所有的磁盘进行检测,我们可以通过脚本的方式来检测相关参数,从而通知管理人员。
一、 下载MegCli,目前针对公司DB数据库是IBM的服务器,直接从IBM官方下载,如果
其它服务器的,使用各官方下载或者 LSI网站上进行相关下载。一般来说,是通用的。这个包适用32 /64位操作系统平台
下载地址:ftp://download2.boulder.ibm.com/ecc/sar/CMA/XSA/ibm_utl_sraidmr_megacli-8.00.48_linux_32-64.zip
二、 安装
#unzip ibm_utl_sraidmr_megacli-8.00.48_linux_32-64.zip
#cd linux
# rpm -ivh Lib_Utils-1.00-09.noarch.rpm MegaCli-8.00.48-1.i386.rpm
三 使用命令及参数
点击(此处)折叠或打开
-
命令使用:
-
#/opt/MegaRAID/MegaCli/MegaCli64 –LDInfo –Lall –aALL 查raid级别
-
#/opt/MegaRAID/MegaCli/MegaCli64 –AdpAllInfo –aALL 查raid卡信息
-
#/opt/MegaRAID/MegaCli/MegaCli64 –PDList –aALL 查看硬盘信息
-
#/opt/MegaRAID/MegaCli/MegaCli64 –AdpBbuCmd –aAll 查看电池信息
-
#/opt/MegaRAID/MegaCli/MegaCli64 –FwTermLog –Dsply –aALL 查看raid卡日志
-
#/opt/MegaRAID/MegaCli/MegaCli64 –adpCount 【显示适配器个数】
-
#/opt/MegaRAID/MegaCli/MegaCli64 –AdpGetTime –aALL 【显示适配器时间】
-
#/opt/MegaRAID/MegaCli/MegaCli64 –AdpAllInfo –aAll 【显示所有适配器信息】
-
#/opt/MegaRAID/MegaCli/MegaCli64 –LDInfo –LALL –aAll 【显示所有逻辑磁盘组信息】
-
#/opt/MegaRAID/MegaCli/MegaCli64 –PDList –aAll 【显示所有的物理信息】
-
#/opt/MegaRAID/MegaCli/MegaCli64 –AdpBbuCmd –GetBbuStatus –aALL |grep ‘Charger Status’ 【查看充电状态】
-
#/opt/MegaRAID/MegaCli/MegaCli64 –AdpBbuCmd –GetBbuStatus –aALL【显示BBU状态信息】
-
#/opt/MegaRAID/MegaCli/MegaCli64 –AdpBbuCmd –GetBbuCapacityInfo –aALL【显示BBU容量信息】
-
#/opt/MegaRAID/MegaCli/MegaCli64 –AdpBbuCmd –GetBbuDesignInfo –aALL 【显示BBU设计参数】
-
#/opt/MegaRAID/MegaCli/MegaCli64 –AdpBbuCmd –GetBbuProperties –aALL 【显示当前BBU属性】
-
#/opt/MegaRAID/MegaCli/MegaCli64 –cfgdsply –aALL 【显示Raid卡型号,Raid设置,Disk相关信息】
-
3.磁带状态的变化,从拔盘,到插盘的过程中。
-
Device |Normal|Damage|Rebuild|Normal
-
Virtual Drive |Optimal|Degraded|Degraded|Optimal
-
Physical Drive |Online|Failed –> Unconfigured|Rebuild|Online
-
4.查看磁盘缓存策略
-
#/opt/MegaRAID/MegaCli/MegaCli64 –LDGetProp –Cache –L0 –a0
-
or
-
#/opt/MegaRAID/MegaCli/MegaCli64 –LDGetProp –Cache –L1 –a0
-
or
-
#/opt/MegaRAID/MegaCli/MegaCli64 –LDGetProp –Cache –LALL –a0
-
ro
-
#/opt/MegaRAID/MegaCli/MegaCli64 –LDGetProp –Cache –LALL –aALL
-
ro
-
#/opt/MegaRAID/MegaCli/MegaCli64 –LDGetProp –DskCache –LALL –aALL
-
5.设置磁盘缓存策略
-
缓存策略解释:
-
WT (Write through
-
WB (Write back)
-
NORA (No read ahead)
-
RA (Read ahead)
-
ADRA (Adaptive read ahead)
-
Cached
-
Direct
-
例子:
-
#/opt/MegaRAID/MegaCli/MegaCli64 –LDSetProp WT|WB|NORA|RA|ADRA –L0 –a0
-
or
-
#/opt/MegaRAID/MegaCli/MegaCli64 –LDSetProp –Cached|–Direct –L0 –a0
-
or
-
enable / disable disk cache
-
#/opt/MegaRAID/MegaCli/MegaCli64 –LDSetProp –EnDskCache|–DisDskCache –L0 –a0
-
6.创建一个 raid5 阵列,由物理盘 2,3,4 构成,该阵列的热备盘是物理盘 5
-
#/opt/MegaRAID/MegaCli/MegaCli64 –CfgLdAdd –r5 [1:2,1:3,1:4] WB Direct –Hsp[1:5] –a0
-
7.创建阵列,不指定热备
-
#/opt/MegaRAID/MegaCli/MegaCli64 –CfgLdAdd –r5 [1:2,1:3,1:4] WB Direct –a0
-
8.删除阵列
-
#/opt/MegaRAID/MegaCli/MegaCli64 –CfgLdDel –L1 –a0
-
9.在线添加磁盘
-
#/opt/MegaRAID/MegaCli/MegaCli64 –LDRecon –Start –r5 –Add –PhysDrv[1:4] –L1 –a0
-
10.阵列创建完后,会有一个初始化同步块的过程,可以看看其进度。
-
#/opt/MegaRAID/MegaCli/MegaCli64 –LDInit –ShowProg –LALL –aALL
-
或者以动态可视化文字界面显示
-
#/opt/MegaRAID/MegaCli/MegaCli64 –LDInit –ProgDsply –LALL –aALL
-
11.查看阵列后台初始化进度
-
#/opt/MegaRAID/MegaCli/MegaCli64 –LDBI –ShowProg –LALL –aALL
-
或者以动态可视化文字界面显示
-
#/opt/MegaRAID/MegaCli/MegaCli64 –LDBI –ProgDsply –LALL –aALL
-
12.指定第 5 块盘作为全局热备
-
#/opt/MegaRAID/MegaCli/MegaCli64 –PDHSP –Set [–EnclAffinity] [–nonRevertible] –PhysDrv[1:5] –a0
-
13.指定为某个阵列的专用热备
-
#/opt/MegaRAID/MegaCli/MegaCli64 –PDHSP –Set [–Dedicated [–Array1]] [–EnclAffinity] [–nonRevertible] –PhysDrv[1:5] –a0
-
14.删除全局热备
-
#/opt/MegaRAID/MegaCli/MegaCli64 –PDHSP –Rmv –PhysDrv[1:5] –a0
-
15.将某块物理盘下线/上线
-
#/opt/MegaRAID/MegaCli/MegaCli64 –PDOffline –PhysDrv [1:4] –a0
-
#/opt/MegaRAID/MegaCli/MegaCli64 –PDOnline –PhysDrv [1:4] –a0
-
16.查看物理磁盘重建进度
-
#/opt/MegaRAID/MegaCli/MegaCli64 –PDRbld –ShowProg –PhysDrv [1:5] –a0
-
或者以动态可视化文字界面显示
-
#/opt/MegaRAID/MegaCli/MegaCli64 –PDRbld –ProgDsply –PhysDrv [1:5] –a0
-
磁带状态的变化,从拔盘,到插盘的过程中:
-
Device |Normal|Damage|Rebuild|Normal
-
Virtual Drive |Optimal|Degraded|Degraded|Optimal
-
Physical Drive |Online|Failed –> Unconfigured|Rebuild|Online
1、 查看RAID级别
2、 查看RAID卡信息,主要输出RAID卡的一些配置信息
RAID Level : Primary-1, Secondary-0, RAID Level Qualifier-0
Size : 1.086 TB
State : Optimal
Strip Size : 128 KB
Number Of Drives per span:4 //表示每4个物理盘做成一个RAID1盘组
Span Depth : 2 //表示共2个RAID1盘组做成了RAID10
3、 查看所有硬盘的信息
/opt/MegaCli64 -pdlist –aALL
4、 查看当前raid缓存状态,raid缓存状态设置为wb的话要注意电池放电事宜,设置电池放电模式为自动学习模式
/opt/MegaRAID/MegaCli/MegaCli64 -ldgetprop -dskcache -lall -aall
5、 raid 电池设置相关
查看电池状态信息(Display BBU Status Information)
MegaCli -AdpBbuCmd -GetBbuStatus -aN|-a0,1,2|-aALL
MegaCli -AdpBbuCmd -GetBbuStatus -aALL
查看电池容量(Display BBU Capacity Information)
MegaCli -AdpBbuCmd -GetBbuCapacityInfo -aN|-a0,1,2|-aALL
MegaCli -AdpBbuCmd -GetBbuCapacityInfo –aALL
查看电池设计参数(Display BBU Design Parameters)
MegaCli -AdpBbuCmd -GetBbuDesignInfo -aN|-a0,1,2|-aALL
MegaCli -AdpBbuCmd -GetBbuDesignInfo –aALL
查看电池属性(Display Current BBU Properties)
MegaCli -AdpBbuCmd -GetBbuProperties -aN|-a0,1,2|-aALL
MegaCli -AdpBbuCmd -GetBbuProperties –aALL
设置电池为学习模式为循环模式(Start BBU Learning Cycle)
Description Starts the learning cycle on the BBU.
No parameter is needed for this option.
MegaCli -AdpBbuCmd -BbuLearn -aN|-a0,1,2|-aALL
设置磁盘的缓存模式和访问方式 (Change Virtual Disk Cache and Access Parameters)
Description Allows you to change the following virtual disk parameters:
-WT (Write through), WB (Write back): Selects write policy.
-NORA (No read ahead), RA (Read ahead), ADRA (Adaptive read ahead): Selects read policy.
-Cached, -Direct: Selects cache policy.
-RW, -RO, Blocked: Selects access policy.
-EnDskCache: Enables disk cache.
-DisDskCache: Disables disk cache.
MegaCli -LDSetProp { WT | WB|NORA |RA | ADRA|-Cached|Direct} |
{-RW|RO|Blocked} |
{-Name[string]} |
{-EnDskCache|DisDskCache} –Lx |
-L0,1,2|-Lall -aN|-a0,1,2|-aALL
MegaCli -LDSetProp WT -L0 -a0
显示磁盘缓存和访问方式(Display Virtual Disk Cache and Access Parameters)
MegaCli -LDGetProp -Cache | -Access | -Name | -DskCache -Lx|-L0,1,2|
-Lall -aN|-a0,1,2|-aALL
Displays the cache and access policies of the virtual disk(s):
-WT (Write through), WB (Write back): Selects write policy.
-NORA (No read ahead), RA (Read ahead), ADRA (Adaptive read ahead): Selects read policy.
-Cache, -Cached, Direct: Displays cache policy.
-Access, -RW, -RO, Blocked: Displays access policy.
-DskCache: Displays physical disk cache policy.
Megaraid 必知必会 使用LSI的megaraid可以对raid进行有效监控。别的厂商比如HP,IBM也有自己的raid API
MegaCli -ldinfo -lall -aall
查询raid级别,磁盘数量,容量,条带大小。
MegaCli -cfgdsply -aALL |grep Policy
查询控制器cache策略
MegaCli -LDSetProp WB -L0 -a0
设置write back功能
MegaCli -LDSetProp CachedBadBBU -L0 -a0
设置即使电池坏了还是保持WB功能
MegaCli -AdpBbuCmd -BbuLearn a0
手动充电
MegaCli -FwTermLog -Dsply -aALL
查询日志
显示适配器个数: MegaCli -adpCount
显示所有适配器信息: MegaCli -AdpAllInfo -aAll
Critical Disks : 0
Failed Disks : 0
显示所有逻辑磁盘组信息: MegaCli -LDInfo -LALL -aAll
显示所有的物理信息: MegaCli -PDList -aAll
Media Error Count: 0
Other Error Count: 0
查看充电状态: MegaCli -AdpBbuCmd -GetBbuStatus -aALL
Learn Cycle Requested : No
Fully Charged : Yes
显示BBU(后备电池)状态信息: MegaCli -AdpBbuCmd -GetBbuStatus -aALL
显示BBU容量信息: MegaCli -AdpBbuCmd -GetBbuCapacityInfo -aALL
显示BBU设计参数: MegaCli -AdpBbuCmd -GetBbuDesignInfo -aALL
显示当前BBU属性: MegaCli -AdpBbuCmd -GetBbuProperties -aALL
显示Raid卡型号,Raid设置,Disk相关信息: MegaCli -cfgdsply -aALL
查看Cache 策略设置: MegaCli -cfgdsply -aALL |grep -i Policy
Current Cache Policy: WriteBack, ReadAheadNone, Direct, Write Cache OK if Bad BBU
查看充电进度百分比: MegaCli -AdpBbuCmd -GetBbuStatus -aALL
各种设备和磁盘的不同状态:
Device |Normal|Damage|Rebuild|Normal
Virtual Drive |Optimal|Degraded|Degraded|Optimal
Physical Drive |Online|Failed –> Unconfigured|Rebuild|Online
6、 通过脚本检测RAID 磁盘状态
Linux下脚本
#!/bin/bash
#check raid disk status
MEGACLI=”/opt/MegaRAID/MegaCli/MegaCli64 “
$MEGACLI -pdlist -aALL | grep “Firmware state” | awk -F : ‘{print $2}’ | awk -F , ‘{print $1}’ >/tmp/fireware.log
$MEGACLI -pdlist -aALL | grep -E “Media Error|Other Error” | awk -F : ‘{print $2}’ >/tmp/disk.log
for i in `cat < /tmp/disk.log`
do
if [ $i -ne 0 ]
then
免责声明:本站发布的内容(图片、视频和文字)以原创、转载和分享为主,文章观点不代表本网站立场,如果涉及侵权请联系站长邮箱:is@yisu.com进行举报,并提供相关证据,一经查实,将立刻删除涉嫌侵权内容。
原创文章,作者:奋斗,如若转载,请注明出处:https://blog.ytso.com/183414.html