Megacli Cheat
做Raid，用到了megacli，又学了一套命令.
- 显示Rebuid进度
1 | /opt/MegaRAID/MegaCli/MegaCli64 -PDRbld -ShowProg -physdrv[20:2] -aALL |
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- 查看ES
1 | /opt/MegaRAID/MegaCli/MegaCli64 -PDList -aAll -NoLog | grep -Ei "(enclosure|slot)" |
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- 查看所有硬盘的状态
1 2 | /opt/MegaRAID/MegaCli/MegaCli64 -LDInfo -LALL -aAll /opt/MegaRAID/MegaCli/MegaCli64 -PDList -aAll -NoLog |
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如果RAID卡被设置成了writethrough。这个是完全不利用卡上内存的一种做法，操作系统需要确认磁盘全部写入后再返回，io latency很大，而且性能差。
可以强制让他一定使用writeback模式，命令：
1 | /opt/MegaCli64 -LDSetProp -ForcedWB -Immediate -Lall –aAll |
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RAID卡上电池没电，单个盘损坏，都会造成RAID策略的变化，所以需要及时检测。
- 查看所有Virtual Disk的状态
1 | /opt/MegaRAID/MegaCli/MegaCli64 -LdPdInfo -aAll -NoLog |
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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- 在线做Raid
1 2 | /opt/MegaRAID/MegaCli/MegaCli64 -CfgLdAdd -r0[0:11] WB NORA Direct CachedBadBBU -strpsz64 -a0 -NoLog /opt/MegaRAID/MegaCli/MegaCli64 -CfgLdAdd -r5 [12:2,12:3,12:4,12:5,12:6,12:7] WB Direct -a0 |
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- 点亮指定硬盘（定位）
1 | /opt/MegaRAID/MegaCli/MegaCli64 -PdLocate -start -physdrv[252:2] -a0 |
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- 清除Foreign状态
1 | /opt/MegaRAID/MegaCli/MegaCli64 -CfgForeign -Clear -a0 |
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- 查看RAID阵列中掉线的盘
1 | /opt/MegaRAID/MegaCli/MegaCli64 -pdgetmissing -a0 |
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- 替换坏掉的模块
1 | /opt/MegaRAID/MegaCli/MegaCli64 -pdreplacemissing -physdrv[12:10] -Array5 -row0 -a0 |
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- 手动开启rebuid
1 | /opt/MegaRAID/MegaCli/MegaCli64 -pdrbld -start -physdrv[12:10] -a0 |
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- 查看Megacli的log
1 | /opt/MegaRAID/MegaCli/MegaCli64 -FwTermLog dsply -a0 > adp2.log |
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- 设置HotSpare
1 2 | /opt/MegaRAID/MegaCli/MegaCli64 -pdhsp -set [-Dedicated [-Array2]] [-EnclAffinity] [-nonRevertible] -PhysDrv[4:11] -a0 /opt/MegaRAID/MegaCli/MegaCli64 -pdhsp -set [-EnclAffinity] [-nonRevertible] -PhysDrv[32：1}] -a0 |
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- 关闭Rebuild
1 | /opt/MegaRAID/MegaCli/MegaCli64 -AdpAutoRbld -Dsbl -a0 |
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- 设置rebuild的速率
1 | /opt/MegaRAID/MegaCli/MegaCli64 -AdpSetProp RebuildRate -30 -a0 |
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