MegaCli 簡(jiǎn)單介紹
MegaCli是LSI公司官方提供的SCSI卡管理工具。由于被收購(gòu)變成了現(xiàn)在的Broadcom，所以現(xiàn)在想下載MegaCli，需要去Broadcom官網(wǎng)查找Legacy產(chǎn)品支持，搜索MegaRAID。
它一款用于管理維護(hù)硬件RAID軟件，可以查看當(dāng)前raid卡的所有信息：raid卡的型號(hào)，raid的陣列類型，raid 的磁盤狀態(tài)；
可以對(duì)raid進(jìn)行管理：在線添加磁盤，創(chuàng)建磁盤陣列、刪除陣列等。
磁盤狀態(tài)
Unconfigured Good ：未配置好。 RAID控制器可訪問(wèn)的驅(qū)動(dòng)器，但未配置為虛擬驅(qū)動(dòng)器或熱備分
Online：在線
Rebuild ：重建。寫入數(shù)據(jù)的驅(qū)動(dòng)器，以恢復(fù)虛擬驅(qū)動(dòng)器的完全冗余
Failed ：失敗
Unconfigured Bad：未配置的壞-驅(qū)動(dòng)器上的固件檢測(cè)不可恢復(fù)的錯(cuò)誤；驅(qū)動(dòng)器無(wú)法初始化Unconfigured Good或驅(qū)動(dòng)器
Missing：失蹤。在線驅(qū)動(dòng)，但已從其位置移除
Offline：脫機(jī)-驅(qū)動(dòng)器是虛擬驅(qū)動(dòng)器的一部分，但在RAID中具有無(wú)效數(shù)據(jù)或未配置。
Hot Spare：熱備份
None：具有不支持標(biāo)志集的驅(qū)動(dòng)器。具有未配置的良好或離線驅(qū)動(dòng)器，完成了搬遷作業(yè)的準(zhǔn)備工作。
RAID 級(jí)別對(duì)應(yīng)關(guān)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
安裝 MegaRAID
【1】下載安裝包
wget ftp://download2.boulder.ibm.com/ecc/sar/CMA/XSA/ibm_utl_sraidmr_megacli-8.00.48_linux_32-64.zip
【2】 安裝
unzip ibm_utl_sraidmr_megacli-8.00.48_linux_32-64.zip
cd linux
yum localinstall Lib_Utils-1.00-09.noarch.rpm MegaCli-8.00.48-1.i386.rpm
常見(jiàn)參數(shù)
一般通過(guò) MegaCli 的Media Error Count 、Other Error Count、Predictive Failure Count來(lái)確定陣列中磁盤是否有問(wèn)題
Slot Number：slot號(hào)，應(yīng)該跟機(jī)器外觀上的標(biāo)識(shí)一致。（磁盤位置）
Inquiry Data: 磁盤的序列號(hào)，跟磁盤標(biāo)簽上一致。（磁盤標(biāo)簽需要拔盤才能看到）
Firmware state: 這磁盤的狀態(tài)，Online是最好的狀態(tài)，除此之外還有 Unconfigured Offline Failed
Medai Error Count 不為0，表示磁盤可能錯(cuò)誤，可能是磁盤有壞道，數(shù)值越大，危險(xiǎn)系數(shù)越高
Other Error Count 不為0，表示磁盤可能存在松動(dòng)，可能需要重新再插入
Predictive Failure Count：表示監(jiān)控硬盤的預(yù)報(bào)錯(cuò)誤數(shù)量，不為0要更換
Last Predictive Failure Event Seq Number：最后一條預(yù)警的時(shí)間序列號(hào)
Raw Size：磁盤大小
Firmware state：磁盤目前的狀態(tài)。
MegaCli常用命令
【1】查raid級(jí)別
/opt/MegaRAID/MegaCli/MegaCli64 -LDInfo -Lall -aALL
Adapter 0 -- Virtual Drive Information:
Virtual Drive: 0 (Target Id: 0)
Name :Virtual Disk 00
RAID Level : Primary-5, Secondary-0, RAID Level Qualifier-3
Size : 1.818 TB
State : Optimal
Strip Size : 64 KB
Number Of Drives : 3
Span Depth : 1
Default Cache Policy: WriteBack, ReadAheadNone, Direct, No Write Cache if Bad BBU
Current Cache Policy: WriteThrough, ReadAheadNone, Direct, No Write Cache if Bad BBU
Access Policy : Read/Write
Disk Cache Policy : Enabled
Encryption Type : None
Number of Dedicated Hot Spares: 1
0 : EnclId - 32 SlotId - 3
Exit Code: 0x00
MegaCli64 -LdPdInfo -aALL 級(jí)別和磁盤
MegaCli64 -PDList -aALL
Adapter #0
Number of Virtual Disks: 1
Virtual Drive: 0 (Target Id: 0)
Name :Virtual Disk 00
RAID Level : Primary-5, Secondary-0, RAID Level Qualifier-3
Size : 1.818 TB
State : Optimal
Strip Size : 64 KB
Number Of Drives : 3
Span Depth : 1
Default Cache Policy: WriteBack, ReadAheadNone, Direct, No Write Cache if Bad BBU
Current Cache Policy: WriteThrough, ReadAheadNone, Direct, No Write Cache if Bad BBU
Access Policy : Read/Write
Disk Cache Policy : Enabled
Encryption Type : None
Number of Spans: 1
Span: 0 - Number of PDs: 3
PD: 0 Information
Enclosure Device ID: 32
Slot Number: 0
Enclosure position: 0
Device Id: 0
Sequence Number: 2
Media Error Count: 0
Other Error Count: 13
Predictive Failure Count: 0
Last Predictive Failure Event Seq Number: 0
PD Type: SATA
Raw Size: 931.512 GB [0x74706db0 Sectors]
Non Coerced Size: 931.012 GB [0x74606db0 Sectors]
Coerced Size: 931.0 GB [0x74600000 Sectors]
Firmware state: Online, Spun Up
SAS Address(0): 0x1221000000000000
Connected Port Number: 0(path0)
Inquiry Data: Z9AE3WLXST1000DM010-2EP102 CC43
FDE Capable: Not Capable
FDE Enable: Disable
Secured: Unsecured
Locked: Unlocked
Needs EKM Attention: No
Foreign State: None
Device Speed: Unknown
Link Speed: Unknown
Media Type: Hard Disk Device
Drive Temperature : N/A
PD: 1 Information
Enclosure Device ID: 32
Slot Number: 1
Enclosure position: 0
Device Id: 1
Sequence Number: 2
Media Error Count: 0
Other Error Count: 13
Predictive Failure Count: 0
Last Predictive Failure Event Seq Number: 0
PD Type: SATA
Raw Size: 931.512 GB [0x74706db0 Sectors]
Non Coerced Size: 931.012 GB [0x74606db0 Sectors]
Coerced Size: 931.0 GB [0x74600000 Sectors]
Firmware state: Online, Spun Up
SAS Address(0): 0x1221000001000000
Connected Port Number: 1(path0)
Inquiry Data: Z9AE3WRXST1000DM010-2EP102 CC43
FDE Capable: Not Capable
FDE Enable: Disable
Secured: Unsecured
Locked: Unlocked
Needs EKM Attention: No
Foreign State: None
Device Speed: Unknown
Link Speed: Unknown
Media Type: Hard Disk Device
Drive Temperature : N/A
PD: 2 Information
Enclosure Device ID: 32
Slot Number: 2
Enclosure position: 0
Device Id: 2
Sequence Number: 2
Media Error Count: 0
Other Error Count: 13
Predictive Failure Count: 0
Last Predictive Failure Event Seq Number: 0
PD Type: SATA
Raw Size: 931.512 GB [0x74706db0 Sectors]
Non Coerced Size: 931.012 GB [0x74606db0 Sectors]
Coerced Size: 931.0 GB [0x74600000 Sectors]
Firmware state: Online, Spun Up
SAS Address(0): 0x1221000002000000
Connected Port Number: 2(path0)
Inquiry Data: Z9AE1RN0ST1000DM010-2EP102 CC43
FDE Capable: Not Capable
FDE Enable: Disable
Secured: Unsecured
Locked: Unlocked
Needs EKM Attention: No
Foreign State: None
Device Speed: Unknown
Link Speed: Unknown
Media Type: Hard Disk Device
Drive Temperature : N/A
Exit Code: 0x00
相關(guān)參數(shù)
Enclosure Device過(guò)濾出raid卡的ID；
Slot Number過(guò)濾出磁盤的槽號(hào)；
Raw Size過(guò)濾出磁盤的大??；
Inquiry Data 過(guò)濾出磁盤的序列號(hào)、型號(hào)固件版本；
Firmware state過(guò)濾出磁盤的狀態(tài)
Adapter 0-- Virtual Drive Information:
VirtualDrive: 0 (Target Id: 0) ----設(shè)備VD號(hào)
Name :
RAIDLevel : Primary-5, Secondary-0,RAID Level Qualifier-3 ----raid級(jí)別
Size : 7.276 TB -----邏輯磁盤大小
State : Optimal -----狀態(tài)：最佳
StripSize : 256 KB -----簇的大小
Number OfDrives : 3
SpanDepth : 1
DefaultCache Policy: WriteThrough, ReadAhead, Direct, No Write Cache if Bad BBU ----默認(rèn)緩存策略
CurrentCache Policy: WriteThrough, ReadAhead, Direct, No Write Cache if Bad BBU -----當(dāng)前緩存策略
AccessPolicy : Read/Write -----存取策略
DiskCache Policy : Disk's Default -----磁盤緩存策略
EncryptionType : None
BadBlocks Exist: No
RAID Level對(duì)應(yīng)關(guān)系：RAID級(jí)別一般通過(guò) Primary 字段值來(lái)判斷
還需要結(jié)合Span Depth的值來(lái)判斷值為1表示為 RAID-1，不為1表示 RAID-10; 還有一種情況：Primary-1， Secondary-3， RAID LevelQualifier-0 也是表示 RAID-10;
RAIDLevel : Primary-0, Secondary-0, RAID Level Qualifier-0 對(duì)應(yīng)RAID 0
RAIDLevel : Primary-1, Secondary-0, RAID Level Qualifier-0 對(duì)應(yīng)RAID 1
RAIDLevel : Primary-5, Secondary-0, RAID Level Qualifier-3 對(duì)應(yīng)RAID 5
RAIDLevel : Primary-1, Secondary-3, RAID Level Qualifier-0 對(duì)應(yīng)RAID 10
【2】查raid卡信息
/opt/MegaRAID/MegaCli/MegaCli64 -AdpAllInfo -aALL
【3】查看硬盤信息
/opt/MegaRAID/MegaCli/MegaCli64 -PDList -aALL
MegaCli64 -PDList -aALL
【4】查看raid卡日志
/opt/MegaRAID/MegaCli/MegaCli64 -FwTermLog -Dsply -aALL
【5】顯示Raid卡型號(hào)，Raid設(shè)置，Disk相關(guān)信息
/opt/MegaRAID/MegaCli/MegaCli64 -cfgdsply -aALL
【6】顯示所有邏輯磁盤組信息
/opt/MegaRAID/MegaCli/MegaCli64 -LDInfo -LALL -aAll
1.查看RAID控制器的數(shù)量：-----raid卡管理要用到
MegaCli64 -adpCount
圖中看出RAID控制器的數(shù)量為1
