MegaCli修復單盤RAID0

背景：某臺機器作個幾塊單盤RAID0，能夠理解成單盤單用，由於有RAID卡必需要作RAID才能識別到硬盤，因此單塊盤也要作成RAID0。如今有塊盤壞了，廠家換了新盤沒重作，怎麼恢復呢？

一、查看全部磁盤的狀態，這沒啥好說的

./MegaCli64 -PDList -a0

二、有塊盤Firmware state是Unconfigured(bad)，這是今天要拯救的目標

Enclosure Device ID: 0
Slot Number: 3
Device Id: 8
Sequence Number: 2
Media Error Count: 0
Other Error Count: 0
Predictive Failure Count: 0
Last Predictive Failure Event Seq Number: 0
PD Type: SATA
Raw Size: 3.638 TB [0x1d1c0beb0 Sectors]
Non Coerced Size: 3.637 TB [0x1d1b0beb0 Sectors]
Coerced Size: 3.637 TB [0x1d1b00000 Sectors]
Firmware state: Unconfigured(bad)
SAS Address(0): 0x5001c45000785ca3
Connected Port Number: 0(path0) 
Inquiry Data:             手動馬賽克
FDE Capable: Not Capable
FDE Enable: Disable
Secured: Unsecured
Locked: Unlocked
Foreign State: None 
Device Speed: Unknown 
Link Speed: Unknown 
Media Type: Hard Disk Device

三、可選：查看磁盤的緩存策略，每塊盤一行，如今的結果應該少一行，由於少塊盤

./MegaCli64 -LDGetProp -Cache -Lall -a0

四、先讓這塊磁盤變成good

./MegaCli64 -PDMakeGood -PhysDrv[0:3] -a0

Adapter: 0: EnclId-0 SlotId-3 state changed to Unconfigured-Good.

Exit Code: 0x00

這裏-PhysDrv[0:3]對應上面的Enclosure Device ID和Slot Number，-a確定是Adapter #0，不太懂爲啥盤要有Good/bad之分。再看磁盤的狀態

Enclosure Device ID: 0
Slot Number: 3
Device Id: 8
Sequence Number: 3
Media Error Count: 0
Other Error Count: 0
Predictive Failure Count: 0
Last Predictive Failure Event Seq Number: 0
PD Type: SATA
Raw Size: 3.638 TB [0x1d1c0beb0 Sectors]
Non Coerced Size: 3.637 TB [0x1d1b0beb0 Sectors]
Coerced Size: 3.637 TB [0x1d1b00000 Sectors]
Firmware state: Unconfigured(good), Spun Up
SAS Address(0): 0x5001c45000785ca3
Connected Port Number: 0(path0) 
Inquiry Data:             手動馬賽克
FDE Capable: Not Capable
FDE Enable: Disable
Secured: Unsecured
Locked: Unlocked
Foreign State: Foreign 
Foreign Secure: Drive is not secured by a foreign lock key
Device Speed: Unknown 
Link Speed: Unknown 
Media Type: Hard Disk Device

五、磁盤確實Good了，可是Foreign State變成了Foreign，須要清除Foreign

./MegaCli64 -cfgforeign -clear -a0

Foreign configuration 0 is cleared on controller 0.

Exit Code: 0x00

再看磁盤的狀態

Enclosure Device ID: 0
Slot Number: 3
Device Id: 8
Sequence Number: 3
Media Error Count: 0
Other Error Count: 0
Predictive Failure Count: 0
Last Predictive Failure Event Seq Number: 0
PD Type: SATA
Raw Size: 3.638 TB [0x1d1c0beb0 Sectors]
Non Coerced Size: 3.637 TB [0x1d1b0beb0 Sectors]
Coerced Size: 3.637 TB [0x1d1b00000 Sectors]
Firmware state: Unconfigured(good), Spun Up
SAS Address(0): 0x5001c45000785ca3
Connected Port Number: 0(path0) 
Inquiry Data:             手動馬賽克
FDE Capable: Not Capable
FDE Enable: Disable
Secured: Unsecured
Locked: Unlocked
Foreign State: None 
Device Speed: Unknown 
Link Speed: Unknown 
Media Type: Hard Disk Device

六、如今再作RAID0

./MegaCli64 -cfgldadd -r0 [0:3] WB RA Direct -a0

Adapter 0: Created VD 馬賽克
 
Adapter 0: Configured the Adapter!!
 
Exit Code: 0x00

這時候再看./MegaCli64 -LDGetProp -Cache -Lall -a0，應該會多一行，對應上面的新VD