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如何使用 MegaCli64 恢复 RAID0？

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如何使用 MegaCli64 恢复 RAID0？

我有一个由两个 SSD 组成的 RAID0 驱动器。我不小心移除了一个 SSD，然后立即将其重新插入。我怎样才能恢复数据？

我将重新插入的磁盘标记为良好并清除了外部状态。但我不知道如何将其添加回 RAID 组。重新插入的磁盘信息：

Enclosure Device ID: 12
Slot Number: 23
Enclosure position: 1
Device Id: 30
WWN: 5002538e4062d3d4
Sequence Number: 7
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]
Sector Size:  512
Logical Sector Size:  512
Physical Sector Size:  512
Firmware state: Unconfigured(good), Spun Up
Device Firmware Level: 1B6Q
Shield Counter: 0
Successful diagnostics completion on :  N/A
SAS Address(0): 0x5003048018219027
Connected Port Number: 0(path0)
Inquiry Data: S3YSNB0K800520R     Samsung SSD 860 EVO 4TB                 RVT01B6Q
FDE Capable: Not Capable
FDE Enable: Disable
Secured: Unsecured
Locked: Unlocked
Needs EKM Attention: No
Foreign State: None
Device Speed: 6.0Gb/s
Link Speed: 12.0Gb/s
Media Type: Solid State Device
Drive:  Not Certified
Drive Temperature :28C (82.40 F)
PI Eligibility:  No
Drive is formatted for PI information:  No
PI: No PI
Drive's NCQ setting : Enabled
Port-0 :
Port status: Active
Port's Linkspeed: 12.0Gb/s
Drive has flagged a S.M.A.R.T alert : No

以下是 RAID0 的信息：

DISK GROUP: 3
Number of Spans: 1
SPAN: 0
Span Reference: 0x04
Number of PDs: 2
Number of VDs: 1
Number of dedicated Hotspares: 0
Virtual Drive Information:
Virtual Drive: 4 (Target Id: 4)
Name                :
RAID Level          : Primary-0, Secondary-0, RAID Level Qualifier-0
Size                : 7.276 TB
Sector Size         : 512
Is VD emulated      : No
Parity Size         : 0
State               : Offline
Strip Size          : 256 KB
Number Of Drives    : 2
Span Depth          : 1
Default Cache Policy: WriteBack, ReadAhead, Direct, No Write Cache if Bad BBU
Current Cache Policy: WriteBack, ReadAhead, Direct, No Write Cache if Bad BBU
Default Access Policy: Read/Write
Current Access Policy: Read/Write
Disk Cache Policy   : Disk's Default
Encryption Type     : None
Bad Blocks Exist: No
PI type: No PI

答案1

我使用以下技巧解决了这个问题https://serverfault.com/a/779381。作者说：

有一个技巧可以恢复您的数据 - 只需使用与之前相同的参数重新创建 RAID 0，当它要求您初始化阵列时，只需说“否”即可。

将重新插入的物理驱动器标记为良好

MegaCli64 -PDMakeGood -PhysDrv [12:23] -aALL

清除国外标记：

MegaCli64 -CfgForeign -Clear -aALL

删除原来的RAID 0虚拟驱动器（在我的例子中是虚拟驱动器4）：

MegaCli64 -CfgLdDel -L4 -a0

使用相同的配置重新创建 RAID 0 驱动器：

MegaCli64 -CfgLdAdd -r0 [12:12,12:23] WB Direct -a0

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