RAID管理工具 -- MegaCli常用命令
#查raid卡信息（生产商、电池信息及所支持的raid级别）
/opt/MegaRAID/MegaCli/MegaCli64 -AdpAllInfo -aALL |grep -E "Product Name|BBU|Memory Size|RAID Level Supported"
#查看虚拟化（vd）和物理盘（pd）的信息，比如查看物理硬盘数，是否有硬盘offline或者degraded
/opt/MegaRAID/MegaCli/MegaCli64 -AdpAllInfo -aALL |grep -E "Device Present" -A9
#查看硬盘是否online
/opt/MegaRAID/MegaCli/MegaCli64 -PDList -aALL |grep "Firmware state"
#查看硬盘是否存在物理错误（error不为0，可能会有硬盘故障即将发生）
/opt/MegaRAID/MegaCli/MegaCli64 -PDList -aALL |grep -i error
#查看电池信息(电池类型、电池状态、充电状态、温度等)
/opt/MegaRAID/MegaCli/MegaCli64 -AdpBbuCmd -aAll
#raid卡个数
/opt/MegaRAID/MegaCli/MegaCli64 -adpCount
#显示所有逻辑磁盘组信息（做了几组raid，raid cache的默认和当前策略，做好raid后的虚拟盘容量）
/opt/MegaRAID/MegaCli/MegaCli64 -LDInfo -LALL -aAll
#显示所有物理盘（物理磁盘个数、大小、是否存在error）
/opt/MegaRAID/MegaCli/MegaCli64 -PDList -aAll
#显示所有物理盘物理错误
/opt/MegaRAID/MegaCli/MegaCli64 -PDList -aAll |grep -i error
#查看充电状态
/opt/MegaRAID/MegaCli/MegaCli64 -AdpBbuCmd -GetBbuStatus -aALL |grep 'Charger Status'
#显示BBU状态信息，比如电池是否,如果issohgood为Yes为正常，No为异常
/opt/MegaRAID/MegaCli/MegaCli64 -AdpBbuCmd -GetBbuStatus -aALL|grep -i issohgood
#显示Raid卡型号，cache大小、Raid设置，cache策略、Disk相关信息
opt/MegaRAID/MegaCli/MegaCli64 -cfgdsply -aALL |egrep "PDs|VDs|Product Name|Memory|BBU:"
#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
#查看磁盘缓存策略（查看vd的）
/opt/MegaRAID/MegaCli/MegaCli64 -LDGetProp -Cache -LALL -aALL
#或者（查看pd的）
#/opt/MegaRAID/MegaCli/MegaCli64 -LDGetProp -DskCache -LALL -aALL
#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：
#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
#RAID Level对应关系：
RAID Level : Primary-1, Secondary-0, RAID Level Qualifier-0 RAID 1
RAID Level : Primary-0, Secondary-0, RAID Level Qualifier-0 RAID 0
RAID Level : Primary-5, Secondary-0, RAID Level Qualifier-3 RAID 5
RAID Level : Primary-1, Secondary-3, RAID Level Qualifier-0 RAID 10