https://www.cnblogs.com/xth0331/p/9655593.html
JBOD
一天小明做了个系统，要装ceph，也许是Raid卡不支持JBOD,就只能做Raid0咯，表面看着好像没区别，大佬还会跟你讲做Raid0有毛线用，我在想也许他还不知道Ceph是替代什么的吧,像我这种小白，连JBOD是什么都不知道，（之前Cisco UCS 做Raid的时候看到过这个选项）。
JBOD是存储领域中一类重要的存储设备，Low点的说法叫Raid卡直通，Just a Bunch Of Disks是JBOD的全名，奥，JBOD真的是只是一堆盘的缩写，23333。
如果已经安装完系统，并且没有配置JBOD 而是做了RAID 插入新磁盘， 系统是看不到的，但是有些业务是不能重启的 ，但是你还想加盘，这就需要Megacli来搞事情了。
安装MegaCli
下载并安装
wegt https://docs.broadcom.com/docs-and-downloads/raid-controllers/raid-controllers-common-files/8-07-10_MegaCLI_Linux.zip unzip 8-07-10_MegaCLI_Linux.zip yum localinstall 8.07.10_MegaCLI_Linux/Linux\ MegaCLI\ 8.07.10/MegaCli-8.07.10-1.noarch.rpm
目录根据情况修改
我们看下都生成了什么！！
rpm -ql rpm -ql MegaCli /opt/MegaRAID/MegaCli/MegaCli /opt/MegaRAID/MegaCli/MegaCli64 /opt/MegaRAID/MegaCli/libstorelibir-2.so.14.07-0
/opt/MegaRAID/MegaCli/MegaCli64这个文件就是我们要用到的，
Megacli概念
适配器，物理驱动器和虚拟驱动器
在我们通过megacli命令之前，我们需要遵循megacli概念。
适配器 - 我们要使用的物理控制器，由id（通常为0）表示。
机柜 - 物理机箱所附的物理驱动器，以id为代表，例如254,252等。
物理驱动器 - 附加到控制器的物理硬盘，由id，0,1,2,3等代表
虚拟驱动器 - 这些驱动器包含物理驱动器，并等同于由id，0,1,2,3等代表的RAID设备。
例如，如果我们的RAID 0超过3个物理驱动器，我们得到：
物理驱动器ID：0,1,2
虚拟驱动器ID：0
虚拟驱动器包含物理驱动器0,1和2，并包括突袭设备的设置，如RAID级别，条带大小等。
我们可以通过一个物理驱动器看到具有RAID 0的虚拟驱动器中的配置，我们有这种设置，因为物理驱动器连接到RAID控制器，并且为了将设备表示给系统，我们必须将其设置为兆位。
默认情况下，我们将在RAID 0中看到虚拟驱动器的所有物理设备。
获取RAID控制器信息
使用lspci确保您的服务器已连接到RAID控制器。
lspci | grep -i raid
我的输出
03:00.0 RAID bus controller: LSI Logic / Symbios Logic MegaRAID SAS 2208 [Thunderbolt] (rev 05)
这表明我这存在MegaRaid controller ；我可以愉快的使用MegaCli搞事！
获取RAID适配器的信息
/opt/MegaRAID/MegaCli/MegaCli64 -AdpGetPciInfo -aAll
带上路径执行
我的输出
PCI information for Controller 0 -------------------------------- Bus Number : 23c0 Device Number : 0 Function Number : a0 Exit Code: 0x00
这里看到适配器信息，适配器id为0。
获取硬盘背板信息
/opt/MegaRAID/MegaCli/MegaCli64 -EncInfo -a0
我的输出
Number of enclosures on adapter 0 -- 1 Enclosure 0: Device ID : 252 Number of Slots : 8 Number of Power Supplies : 0 Number of Fans : 0 Number of Temperature Sensors : 0 Number of Alarms : 0 Number of SIM Modules : 1 Number of Physical Drives : 8 Status : Normal Position : 1 Connector Name : Unavailable Enclosure type : SGPIO FRU Part Number : N/A Enclosure Serial Number : N/A ESM Serial Number : N/A Enclosure Zoning Mode : N/A Partner Device Id : Unavailable Inquiry data : Vendor Identification : LSI Product Identification : SGPIO Product Revision Level : N/A Vendor Specific : Exit Code: 0x00
记录下
| Device ID | 252 |
|---|---|
| Number of Slots( 可以连接到这个背板的最大物理驱动器 | 8 |
获取物理驱动器的信息
/opt/MegaRAID/MegaCli/MegaCli64 -LdPdInfo -a0
因为我的盘比较多。这里输出就列出一个
PD: 0 Information Enclosure Device ID: 252 Slot Number: 1 Drive's position: DiskGroup: 1, Span: 0, Arm: 0 Enclosure position: N/A Device Id: 3 WWN: 500003963820BFE1 Sequence Number: 2 Media Error Count: 0 Other Error Count: 0 Predictive Failure Count: 0 Last Predictive Failure Event Seq Number: 0 PD Type: SAS Raw Size: 279.396 GB [0x22ecb25c Sectors] Non Coerced Size: 278.896 GB [0x22dcb25c Sectors] Coerced Size: 278.875 GB [0x22dc0000 Sectors] Sector Size: 512 Logical Sector Size: 512 Physical Sector Size: 512 Firmware state: Online, Spun Up Commissioned Spare : No Emergency Spare : No Device Firmware Level: 1004 Shield Counter: 0 Successful diagnostics completion on : N/A SAS Address(0): 0x500003963820bfe2 SAS Address(1): 0x0 Connected Port Number: 1(path0) Inquiry Data: TOSHIBA AL13SEB300 100445O0A05KFWC9 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: 6.0Gb/s Media Type: Hard Disk Device Drive: Not Certified Drive Temperature :24C (75.20 F) PI Eligibility: No Drive is formatted for PI information: No PI: No PI Port-0 : Port status: Active Port's Linkspeed: 6.0Gb/s Port-1 : Port status: Active Port's Linkspeed: 6.0Gb/s Drive has flagged a S.M.A.R.T alert : No Virtual Drive: 2 (Target Id: 2) Name : RAID Level : Primary-0, Secondary-0, RAID Level Qualifier-0 Size : 278.875 GB Sector Size : 512 Is VD emulated : No Parity Size : 0 State : Optimal Strip Size : 256 KB Number Of Drives : 1 Span Depth : 1 Default Cache Policy: WriteThrough, ReadAhead, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteThrough, 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 PI type: No PI Is VD Cached: No Number of Spans: 1 Span: 0 - Number of PDs: 1 PD: 0 Information Enclosure Device ID: 252 Slot Number: 3 Drive's position: DiskGroup: 2, Span: 0, Arm: 0 Enclosure position: N/A Device Id: 14 WWN: 500003963820C81D Sequence Number: 2 Media Error Count: 0 Other Error Count: 0 Predictive Failure Count: 0 Last Predictive Failure Event Seq Number: 0 PD Type: SAS Raw Size: 279.396 GB [0x22ecb25c Sectors] Non Coerced Size: 278.896 GB [0x22dcb25c Sectors] Coerced Size: 278.875 GB [0x22dc0000 Sectors] Sector Size: 512 Logical Sector Size: 512 Physical Sector Size: 512 Firmware state: Online, Spun Up Commissioned Spare : No Emergency Spare : No Device Firmware Level: 1004 Shield Counter: 0 Successful diagnostics completion on : N/A SAS Address(0): 0x500003963820c81e SAS Address(1): 0x0 Connected Port Number: 3(path0) Inquiry Data: TOSHIBA AL13SEB300 100445O0A08RFWC9 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: 6.0Gb/s Media Type: Hard Disk Device Drive: Not Certified Drive Temperature :26C (78.80 F) PI Eligibility: No Drive is formatted for PI information: No PI: No PI Port-0 : Port status: Active Port's Linkspeed: 6.0Gb/s Port-1 : Port status: Active Port's Linkspeed: 6.0Gb/s Drive has flagged a S.M.A.R.T alert : No Virtual Drive: 3 (Target Id: 3) Name : RAID Level : Primary-0, Secondary-0, RAID Level Qualifier-0 Size : 278.875 GB Sector Size : 512 Is VD emulated : No Parity Size : 0 State : Optimal Strip Size : 256 KB Number Of Drives : 1 Span Depth : 1 Default Cache Policy: WriteThrough, ReadAhead, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteThrough, 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 PI type: No PI Is VD Cached: No Number of Spans: 1 Span: 0 - Number of PDs: 1 PD: 0 Information Enclosure Device ID: 252 Slot Number: 2 Drive's position: DiskGroup: 3, Span: 0, Arm: 0 Enclosure position: N/A Device Id: 16 WWN: 500003963820C225 Sequence Number: 2 Media Error Count: 0 Other Error Count: 0 Predictive Failure Count: 0 Last Predictive Failure Event Seq Number: 0 PD Type: SAS Raw Size: 279.396 GB [0x22ecb25c Sectors] Non Coerced Size: 278.896 GB [0x22dcb25c Sectors] Coerced Size: 278.875 GB [0x22dc0000 Sectors] Sector Size: 512 Logical Sector Size: 512 Physical Sector Size: 512 Firmware state: Online, Spun Up Commissioned Spare : No Emergency Spare : No Device Firmware Level: 1004 Shield Counter: 0 Successful diagnostics completion on : N/A SAS Address(0): 0x500003963820c226 SAS Address(1): 0x0 Connected Port Number: 2(path0) Inquiry Data: TOSHIBA AL13SEB300 100445O0A06AFWC9 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: 6.0Gb/s Media Type: Hard Disk Device Drive: Not Certified Drive Temperature :26C (78.80 F) PI Eligibility: No Drive is formatted for PI information: No PI: No PI Port-0 : Port status: Active Port's Linkspeed: 6.0Gb/s Port-1 : Port status: Active Port's Linkspeed: 6.0Gb/s Drive has flagged a S.M.A.R.T alert : No Virtual Drive: 4 (Target Id: 4) Name : RAID Level : Primary-0, Secondary-0, RAID Level Qualifier-0 Size : 837.843 GB Sector Size : 512 Is VD emulated : No Parity Size : 0 State : Optimal Strip Size : 256 KB Number Of Drives : 1 Span Depth : 1 Default Cache Policy: WriteThrough, ReadAhead, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteThrough, 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 PI type: No PI Is VD Cached: No Number of Spans: 1 Span: 0 - Number of PDs: 1 PD: 0 Information Enclosure Device ID: 252 Slot Number: 4 Drive's position: DiskGroup: 4, Span: 0, Arm: 0 Enclosure position: N/A Device Id: 15 WWN: 5000C500958D1EB8 Sequence Number: 2 Media Error Count: 0 Other Error Count: 0 Predictive Failure Count: 0 Last Predictive Failure Event Seq Number: 0 PD Type: SAS Raw Size: 838.362 GB [0x68cb9e30 Sectors] Non Coerced Size: 837.862 GB [0x68bb9e30 Sectors] Coerced Size: 837.843 GB [0x68bb0000 Sectors] Sector Size: 512 Logical Sector Size: 512 Physical Sector Size: 512 Firmware state: Online, Spun Up Commissioned Spare : No Emergency Spare : No Device Firmware Level: L56Q Shield Counter: 0 Successful diagnostics completion on : N/A SAS Address(0): 0x5000c500958d1eb9 SAS Address(1): 0x0 Connected Port Number: 4(path0) Inquiry Data: LENOVO-XST900MM0006 L56QS0N5129S0521B5C9 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: 6.0Gb/s Media Type: Hard Disk Device Drive: Not Certified Drive Temperature :28C (82.40 F) PI Eligibility: Yes Number of bytes of user data in LBA: 512 Drive is formatted for PI information: Yes PI: PI with type 2 Port-0 : Port status: Active Port's Linkspeed: 6.0Gb/s Port-1 : Port status: Active Port's Linkspeed: 6.0Gb/s Drive has flagged a S.M.A.R.T alert : No Virtual Drive: 5 (Target Id: 5) Name : RAID Level : Primary-0, Secondary-0, RAID Level Qualifier-0 Size : 278.875 GB Sector Size : 512 Is VD emulated : No Parity Size : 0 State : Optimal Strip Size : 256 KB Number Of Drives : 1 Span Depth : 1 Default Cache Policy: WriteBack, ReadAdaptive, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteThrough, ReadAdaptive, 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 PI type: No PI Is VD Cached: No Number of Spans: 1 Span: 0 - Number of PDs: 1 PD: 0 Information Enclosure Device ID: 252 Slot Number: 5 Drive's position: DiskGroup: 5, Span: 0, Arm: 0 Enclosure position: N/A Device Id: 18 WWN: 500003963820C429 Sequence Number: 2 Media Error Count: 0 Other Error Count: 0 Predictive Failure Count: 0 Last Predictive Failure Event Seq Number: 0 PD Type: SAS Raw Size: 279.396 GB [0x22ecb25c Sectors] Non Coerced Size: 278.896 GB [0x22dcb25c Sectors] Coerced Size: 278.875 GB [0x22dc0000 Sectors] Sector Size: 512 Logical Sector Size: 512 Physical Sector Size: 512 Firmware state: Online, Spun Up Commissioned Spare : No Emergency Spare : No Device Firmware Level: 1004 Shield Counter: 0 Successful diagnostics completion on : N/A SAS Address(0): 0x500003963820c42a SAS Address(1): 0x0 Connected Port Number: 5(path0) Inquiry Data: TOSHIBA AL13SEB300 100445O0A06TFWC9 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: 6.0Gb/s Media Type: Hard Disk Device Drive: Not Certified Drive Temperature :24C (75.20 F) PI Eligibility: No Drive is formatted for PI information: No PI: No PI Port-0 : Port status: Active Port's Linkspeed: 6.0Gb/s Port-1 : Port status: Active Port's Linkspeed: 6.0Gb/s Drive has flagged a S.M.A.R.T alert : No Virtual Drive: 6 (Target Id: 6) Name : RAID Level : Primary-0, Secondary-0, RAID Level Qualifier-0 Size : 278.875 GB Sector Size : 512 Is VD emulated : No Parity Size : 0 State : Optimal Strip Size : 256 KB Number Of Drives : 1 Span Depth : 1 Default Cache Policy: WriteBack, ReadAdaptive, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteThrough, ReadAdaptive, 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 PI type: No PI Is VD Cached: No Number of Spans: 1 Span: 0 - Number of PDs: 1 PD: 0 Information Enclosure Device ID: 252 Slot Number: 6 Drive's position: DiskGroup: 6, Span: 0, Arm: 0 Enclosure position: N/A Device Id: 19 WWN: 500003963820BFF1 Sequence Number: 2 Media Error Count: 0 Other Error Count: 0 Predictive Failure Count: 0 Last Predictive Failure Event Seq Number: 0 PD Type: SAS Raw Size: 279.396 GB [0x22ecb25c Sectors] Non Coerced Size: 278.896 GB [0x22dcb25c Sectors] Coerced Size: 278.875 GB [0x22dc0000 Sectors] Sector Size: 512 Logical Sector Size: 512 Physical Sector Size: 512 Firmware state: Online, Spun Up Commissioned Spare : No Emergency Spare : No Device Firmware Level: 1004 Shield Counter: 0 Successful diagnostics completion on : N/A SAS Address(0): 0x500003963820bff2 SAS Address(1): 0x0 Connected Port Number: 6(path0) Inquiry Data: TOSHIBA AL13SEB300 100445O0A05MFWC9 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: 6.0Gb/s Media Type: Hard Disk Device Drive: Not Certified Drive Temperature :24C (75.20 F) PI Eligibility: No Drive is formatted for PI information: No PI: No PI Port-0 : Port status: Active Port's Linkspeed: 6.0Gb/s Port-1 : Port status: Active Port's Linkspeed: 6.0Gb/s Drive has flagged a S.M.A.R.T alert : No Virtual Drive: 7 (Target Id: 7) Name : RAID Level : Primary-0, Secondary-0, RAID Level Qualifier-0 Size : 278.875 GB Sector Size : 512 Is VD emulated : No Parity Size : 0 State : Optimal Strip Size : 256 KB Number Of Drives : 1 Span Depth : 1 Default Cache Policy: WriteBack, ReadAdaptive, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteThrough, ReadAdaptive, 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 PI type: No PI Is VD Cached: No Number of Spans: 1 Span: 0 - Number of PDs: 1 PD: 0 Information Enclosure Device ID: 252 Slot Number: 7 Drive's position: DiskGroup: 7, Span: 0, Arm: 0 Enclosure position: N/A Device Id: 20 WWN: 500003963820C2D1 Sequence Number: 2 Media Error Count: 0 Other Error Count: 0 Predictive Failure Count: 0 Last Predictive Failure Event Seq Number: 0 PD Type: SAS Raw Size: 279.396 GB [0x22ecb25c Sectors] Non Coerced Size: 278.896 GB [0x22dcb25c Sectors] Coerced Size: 278.875 GB [0x22dc0000 Sectors] Sector Size: 512 Logical Sector Size: 512 Physical Sector Size: 512 Firmware state: Online, Spun Up Commissioned Spare : No Emergency Spare : No Device Firmware Level: 1004 Shield Counter: 0 Successful diagnostics completion on : N/A SAS Address(0): 0x500003963820c2d2 SAS Address(1): 0x0 Connected Port Number: 7(path0) Inquiry Data: TOSHIBA AL13SEB300 100445O0A06HFWC9 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: 6.0Gb/s Media Type: Hard Disk Device Drive: Not Certified Drive Temperature :24C (75.20 F) PI Eligibility: No Drive is formatted for PI information: No PI: No PI Port-0 : Port status: Active Port's Linkspeed: 6.0Gb/s Port-1 : Port status: Active Port's Linkspeed: 6.0Gb/s Drive has flagged a S.M.A.R.T alert : No Exit Code: 0x00
Slot Number是物理驱动器连接的插槽号，也就是对应物理驱动器id
获取Virtual drives信息
/opt/MegaRAID/MegaCli/MegaCli64 -LDInfo -Lall -a0
我的输出
Adapter 0 -- Virtual Drive Information: Virtual Drive: 0 (Target Id: 0) Name : RAID Level : Primary-0, Secondary-0, RAID Level Qualifier-0 Size : 185.781 GB Sector Size : 512 Is VD emulated : Yes Parity Size : 0 State : Optimal Strip Size : 256 KB Number Of Drives : 1 Span Depth : 1 Default Cache Policy: WriteThrough, ReadAhead, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteThrough, ReadAhead, Direct, No Write Cache if Bad BBU Default Access Policy: Read/Write Current Access Policy: Read/Write Disk Cache Policy : Enabled Encryption Type : None PI type: No PI Is VD Cached: No Virtual Drive: 1 (Target Id: 1) Name : RAID Level : Primary-0, Secondary-0, RAID Level Qualifier-0 Size : 278.875 GB Sector Size : 512 Is VD emulated : No Parity Size : 0 State : Optimal Strip Size : 256 KB Number Of Drives : 1 Span Depth : 1 Default Cache Policy: WriteThrough, ReadAhead, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteThrough, 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 PI type: No PI Is VD Cached: No Virtual Drive: 2 (Target Id: 2) Name : RAID Level : Primary-0, Secondary-0, RAID Level Qualifier-0 Size : 278.875 GB Sector Size : 512 Is VD emulated : No Parity Size : 0 State : Optimal Strip Size : 256 KB Number Of Drives : 1 Span Depth : 1 Default Cache Policy: WriteThrough, ReadAhead, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteThrough, 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 PI type: No PI Is VD Cached: No Virtual Drive: 3 (Target Id: 3) Name : RAID Level : Primary-0, Secondary-0, RAID Level Qualifier-0 Size : 278.875 GB Sector Size : 512 Is VD emulated : No Parity Size : 0 State : Optimal Strip Size : 256 KB Number Of Drives : 1 Span Depth : 1 Default Cache Policy: WriteThrough, ReadAhead, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteThrough, 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 PI type: No PI Is VD Cached: No Virtual Drive: 4 (Target Id: 4) Name : RAID Level : Primary-0, Secondary-0, RAID Level Qualifier-0 Size : 837.843 GB Sector Size : 512 Is VD emulated : No Parity Size : 0 State : Optimal Strip Size : 256 KB Number Of Drives : 1 Span Depth : 1 Default Cache Policy: WriteThrough, ReadAhead, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteThrough, 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 PI type: No PI Is VD Cached: No Virtual Drive: 5 (Target Id: 5) Name : RAID Level : Primary-0, Secondary-0, RAID Level Qualifier-0 Size : 278.875 GB Sector Size : 512 Is VD emulated : No Parity Size : 0 State : Optimal Strip Size : 256 KB Number Of Drives : 1 Span Depth : 1 Default Cache Policy: WriteBack, ReadAdaptive, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteThrough, ReadAdaptive, 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 PI type: No PI Is VD Cached: No Virtual Drive: 6 (Target Id: 6) Name : RAID Level : Primary-0, Secondary-0, RAID Level Qualifier-0 Size : 278.875 GB Sector Size : 512 Is VD emulated : No Parity Size : 0 State : Optimal Strip Size : 256 KB Number Of Drives : 1 Span Depth : 1 Default Cache Policy: WriteBack, ReadAdaptive, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteThrough, ReadAdaptive, 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 PI type: No PI Is VD Cached: No Virtual Drive: 7 (Target Id: 7) Name : RAID Level : Primary-0, Secondary-0, RAID Level Qualifier-0 Size : 278.875 GB Sector Size : 512 Is VD emulated : No Parity Size : 0 State : Optimal Strip Size : 256 KB Number Of Drives : 1 Span Depth : 1 Default Cache Policy: WriteBack, ReadAdaptive, Direct, No Write Cache if Bad BBU Current Cache Policy: WriteThrough, ReadAdaptive, 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 PI type: No PI Is VD Cached: No Exit Code: 0x00
| Target ID | 表RAID创建过程中 创建的虚拟驱动器 |
|---|---|
| Size | RAID设备的大小，这个大小是实际可分配的大小 |
获取Virtual drives内的物理驱动器信息
这就有点难了， 其实没什么卵用,记下来留着以后copy
/opt/MegaRAID/MegaCli/MegaCli64 -LdPdInfo -a0 | grep -E "Virtual Drive:|Slot Number:" | xargs | sed -r 's/(Slot Number:)(\s[0-9]+)/\2,/g' | sed 's/(Target Id: .)/Physical Drives ids:/g' | sed 's/Virtual Drive:/\nVirtual Drive:/g'
我的输出
Virtual Drive: 0 Physical Drives ids: 0, Virtual Drive: 1 Physical Drives ids: 1, Virtual Drive: 2 Physical Drives ids: 3, Virtual Drive: 3 Physical Drives ids: 2, Virtual Drive: 4 Physical Drives ids: 4, Virtual Drive: 5 Physical Drives ids: 5, Virtual Drive: 6 Physical Drives ids: 6, Virtual Drive: 7 Physical Drives ids: 7,
或者使用这个工具 "megasasctl"
创建RAID设备（Virtual drives）
前面主要是收集信息，有信息，才可以准确的创建
比如我们来一个
Adpater id: 0 Enclosure id: 252 Physical Drive ids: 3 Raid Level: 0
命令参数
/opt/MegaRAID/MegaCli/MegaCli64 -CfgLdAdd -rX[enclosure_id:physical_id,enclosure_id:physical_id] -aN
X 是 RAID级别
N 是 adapter ID
举个栗子
/opt/MegaRAID/MegaCli/MegaCli64 -CfgLdAdd -r0[252:3,252:4] -a0
设备编号为3和4的磁盘，创建RAID0
来个RAID10
/opt/MegaRAID/MegaCli/MegaCli64 -CfgSpanAdd -r10 -Array0 [252:2,252:3] -Array1 [252:4,252:5] -a0
删除RAID设备
删Virtual drives2
/opt/MegaRAID/MegaCli/MegaCli64 -CfgLdDel -L2 -a0
常用选项
相关命令及其解析： 查看机器型号 # dmidecode | grep "Product" 查看厂商 # dmidecode| grep "Manufacturer" 查看序列号 # dmidecode | grep "Serial Number" 查看CPU信息 # dmidecode | grep "CPU" 查看CPU个数 # dmidecode | grep "Socket Designation: CPU" |wc –l 查看出厂日期 # dmidecode | grep "Date" 查看充电状态 # MegaCli -AdpBbuCmd -GetBbuStatus -aALL |grep "Charger Status" 显示BBU状态信息 # MegaCli -AdpBbuCmd -GetBbuStatus –aALL 显示BBU容量信息 # MegaCli -AdpBbuCmd -GetBbuCapacityInfo –aALL 显示BBU设计参数 # MegaCli -AdpBbuCmd -GetBbuDesignInfo –aALL 显示当前BBU属性 # MegaCli -AdpBbuCmd -GetBbuProperties –aALL 查看充电进度百分比 # MegaCli -AdpBbuCmd -GetBbuStatus -aALL |grep "Relative State of Charge" 查询Raid阵列数 # MegaCli -cfgdsply -aALL |grep "Number of DISK GROUPS:" 显示Raid卡型号，Raid设置，Disk相关信息 # MegaCli -cfgdsply –aALL 显示所有物理信息 # MegaCli -PDList -aALL 显示所有逻辑磁盘组信息 # MegaCli -LDInfo -LALL –aAll 查看物理磁盘重建进度(重要) # MegaCli -PDRbld -ShowProg -PhysDrv [1:5] -a0 查看适配器个数 #MegaCli –adpCount 查看适配器时间 #MegaCli -AdpGetTime –aALL 显示所有适配器信息 #MegaCli -AdpAllInfo –aAll 查看Cache 策略设置 # MegaCli -cfgdsply -aALL |grep Polic 硬盘方面： 1、查看所有物理磁盘信息 MegaCli -PDList -aALL 2、查看磁盘缓存策略 MegaCli -LDGetProp -Cache -L0 -a0 or MegaCli -LDGetProp -Cache -L1 -a0 or MegaCli -LDGetProp -Cache -LALL -a0 or MegaCli -LDGetProp -Cache -LALL -aALL or MegaCli -LDGetProp -DskCache -LALL -aALL 3、设置磁盘缓存策略 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： MegaCli -LDSetProp WT|WB|NORA|RA|ADRA -L0 -a0 or MegaCli -LDSetProp -Cached|-Direct -L0 -a0 or enable / disable disk cache MegaCli -LDSetProp -EnDskCache|-DisDskCache -L0 -a0 4、创建/删除 阵列 4.1 创建一个 raid5 阵列，由物理盘 2,3,4 构成，该阵列的热备盘是物理盘 5 MegaCli -CfgLdAdd -r5 [1:2,1:3,1:4] WB Direct -Hsp[1:5] –a0 4.2 创建阵列，不指定热备 MegaCli -CfgLdAdd -r5 [1:2,1:3,1:4] WB Direct –a0 4.3 删除阵列 MegaCli -CfgLdDel -L1 –a0 4.4 在线添加磁盘 MegaCli -LDRecon -Start -r5 -Add -PhysDrv[1:4] -L1 -a0 意思是，重建逻辑磁盘组1，raid级别是5，添加物理磁盘号：1:4。重建完后，新添加的物理磁盘会自动处于重建(同步)状态，这个 时候 fdisk -l是看不到阵列的空间变大的，只有在系统重启后才能看见。 5、查看阵列初始化信息 5.1 阵列创建完后，会有一个初始化同步块的过程，可以看看其进度。 MegaCli -LDInit -ShowProg -LALL -aALL 或者以动态可视化文字界面显示 MegaCli -LDInit -ProgDsply -LALL –aALL 5.2 查看阵列后台初始化进度 MegaCli -LDBI -ShowProg -LALL -aALL 或者以动态可视化文字界面显示 MegaCli -LDBI -ProgDsply -LALL -aALL 6、创建全局热备 指定第 5 块盘作为全局热备 MegaCli -PDHSP -Set [-EnclAffinity] [-nonRevertible] -PhysDrv[1:5] -a0 也可以指定为某个阵列的专用热备 MegaCli -PDHSP -Set [-Dedicated [-Array1]] [-EnclAffinity] [-nonRevertible] -PhysDrv[1:5] -a0 7、删除全局热备 MegaCli -PDHSP -Rmv -PhysDrv[1:5] -a0 8、将某块物理盘下线/上线 MegaCli -PDOffline -PhysDrv [1:4] -a0 MegaCli -PDOnline -PhysDrv [1:4] -a0 9、查看物理磁盘重建进度 MegaCli -PDRbld -ShowProg -PhysDrv [1:5] -a0