MegaRAID管理磁盘

CentOS 7 MegaRAID 管理磁盘

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May 31 2017

 

对于OpenStack来说，存储基本都是Ceph，那么磁盘一般都会做成raid0或者使用直通模式。对于直通模式，SATA盘的性能，会相对差不少，通过Raid卡，由于有raid卡的缓存，raid0，磁盘的性能会好很多。那么通过Raid卡，设置Raid0，一个问题就是，换盘，机器必须重启设置raid，能不能在运行的机器，把磁盘的raid 重建一下呢？

我在一台3年前的广达的四字星服务器上做验证。

我的raid卡是：LSI MegaRAID SAS PCI Express ROMB

Contents [hide]

• 1 确认Raid卡
• 2 安装megacli
• 3 查看
  • 3.1 查看硬盘信息
  • 3.2 查看单盘的详细信息
  • 3.3 查看逻辑盘详细信息
  • 3.4 查看raid卡全部信息
• 4 Raid配置过程
  • 4.1 点亮指定硬盘（定位）
  • 4.2 修改磁盘状态
  • 4.3 Foreign
  • 4.4 创建raid0
  • 4.5 JBOD模式

确认Raid卡

# dmesg | grep -i raid 
[    2.981279] megaraid_sas 0000:06:00.0: FW now in Ready state
[    2.981330] megaraid_sas 0000:06:00.0: irq 36 for MSI/MSI-X

[    2.981532] megaraid_sas 0000:06:00.0: irq 51 for MSI/MSI-X
[    2.981585] megaraid_sas 0000:06:00.0: firmware supports msix        : (16)
[    2.981587] megaraid_sas 0000:06:00.0: current msix/online cpus      : (16/24)
[    2.981589] megaraid_sas 0000:06:00.0: RDPQ mode     : (disabled)

[    2.982991] megaraid_sas 0000:06:00.0: FW supports sync cache        : No
[    3.003325] megaraid_sas 0000:06:00.0: Init cmd success
[    3.025320] megaraid_sas 0000:06:00.0: firmware type : Legacy(64 VD) firmware
[    3.025323] megaraid_sas 0000:06:00.0: controller type       : MR(1024MB)
[    3.025324] megaraid_sas 0000:06:00.0: Online Controller Reset(OCR)  : Enabled
[    3.025325] megaraid_sas 0000:06:00.0: Secure JBOD support   : No

[    3.125498] scsi host0: Avago SAS based MegaRAID driver

我的理解市场上99%服务器，基本都会是LSI的raid卡，都可以通过mega raid的工具进行管理。

安装megacli

https://www.broadcom.com/support/download-search

搜索框里搜索 megacli

一个zip文件，上传到linux下，解压，进入linux目录下，就一个rpm包

rpm -ivh MegaCli-8.07.14-1.noarch.rpm

查看

现在就根据文档，一步一步进行测试

查看硬盘信息

/opt/MegaRAID/MegaCli/MegaCli64 -PDList -aALL

信息量很多。

可以通过命令过滤一下

/opt/MegaRAID/MegaCli/./MegaCli64 -PDList -aALL \
| egrep 'Adapter|Enclosure Device ID|Coerced Size|Drive Temperature|PD Type|Slot|Inquiry'

这样输出有效信息

Adapter #0
Enclosure Device ID: 252
Slot Number: 0
PD Type: SATA
Non Coerced Size: 446.630 GB [0x37d436b0 Sectors]
Coerced Size: 446.625 GB [0x37d40000 Sectors]
Inquiry Data: BTWL502105DX480QGN  INTEL SSDSC2BB480G4                     D2010370
Drive Temperature : N/A
Enclosure Device ID: 252
Slot Number: 1
PD Type: SATA
Non Coerced Size: 446.630 GB [0x37d436b0 Sectors]
Coerced Size: 446.625 GB [0x37d40000 Sectors]
Inquiry Data: BTWL502201GP480QGN  INTEL SSDSC2BB480G4                     D2010370
Drive Temperature : N/A
Enclosure Device ID: 252
Slot Number: 2
PD Type: SATA
Non Coerced Size: 931.012 GB [0x74606db0 Sectors]
Coerced Size: 931.0 GB [0x74600000 Sectors]
Inquiry Data:             9XG6PQX4ST91000640NS                            SN03    
Drive Temperature :25C (77.00 F)
Enclosure Device ID: 252
Slot Number: 3
PD Type: SATA
Non Coerced Size: 931.012 GB [0x74606db0 Sectors]
Coerced Size: 931.0 GB [0x74600000 Sectors]
Inquiry Data:             9XG2XPCBST91000640NS                            SN03    
Drive Temperature :24C (75.20 F)
Enclosure Device ID: 252
Slot Number: 4
PD Type: SATA
Non Coerced Size: 931.012 GB [0x74606db0 Sectors]
Coerced Size: 931.0 GB [0x74600000 Sectors]
Inquiry Data:             9XG6Q1F6ST91000640NS                            SN03    
Drive Temperature :24C (75.20 F)
Enclosure Device ID: 252
Slot Number: 5
PD Type: SATA
Non Coerced Size: 931.012 GB [0x74606db0 Sectors]
Coerced Size: 931.0 GB [0x74600000 Sectors]
Inquiry Data:             9XG5ARPZST91000640NS                            SN03    
Drive Temperature :25C (77.00 F)

我的理解

• Adapter0：第一块卡的意思
• Enclosure Device ID：252  这个参数很重要，设置raid要用到
• slot neumber :0，硬盘插入的位置
• PD type：接口是SATA接口，不是SAS接口
• core size：容量
• inquiry data：硬盘产商，可以看出是intel出的ssd
• Drive temperature：磁盘温度，SATA盘是有温度，ssd没有

 

查看单盘的详细信息

 /opt/MegaRAID/MegaCli/MegaCli64 -pdInfo -PhysDrv[252:3] -aALL

252，就是Enclosure Device ID

3：就是slot neumber

查看逻辑盘详细信息

/opt/MegaRAID/MegaCli/MegaCli64 -LdPdInfo -aALL

 

查看raid卡全部信息

# /opt/MegaRAID/MegaCli/MegaCli64 -AdpAllInfo -aAll

基本上raid卡的功能，都是可以通过这个命令查看。

你所使用的raid卡型号是：LSI MegaRAID SAS PCI Express ROMB

另外默认 JBOD是关闭的，底下有介绍，可以通过命令打开这个功能。

Raid配置过程

点亮指定硬盘（定位）

/opt/MegaRAID/MegaCli/MegaCli64 -PdLocate -start -physdrv[252:5] -a0

一排绿色的硬盘灯，有一个变成红色

start改成stop，就会恢复绿色。很实用。

拔出亮红灯磁盘，再次插入

# /opt/MegaRAID/MegaCli/MegaCli64 -PDList -aALL -Nolog|grep '^Firm'
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Unconfigured(bad)

修改磁盘状态

# /opt/MegaRAID/MegaCli/MegaCli64 -PDMakeGood -PhysDrv[252:5]-a0
                                     
Adapter: 0: EnclId-252 SlotId-5 state changed to Unconfigured-Good.

查看状态

]# /opt/MegaRAID/MegaCli/MegaCli64 -PDList -aALL -Nolog|grep '^Firm'
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Unconfigured(good), Spun Up

Foreign

扫描 Foreign

/opt/MegaRAID/MegaCli/MegaCli64 -cfgforeign -scan -a0
                                     
There are 1 foreign configuration(s) on controller 0.

Exit Code: 0x00

发现有一个 Foreign

清除Foreign

/opt/MegaRAID/MegaCli/MegaCli64 -cfgforeign -clear –a0

Foreign configuration 0 is cleared on controller 0. Exit Code: 0x00

再次扫描

/opt/MegaRAID/MegaCli/MegaCli64 -cfgforeign -scan –a0

There is no foreign configuration on controller 0. Exit Code: 0x00

创建raid0

# /opt/MegaRAID/MegaCli/MegaCli64 -CfgLdAdd -r0[252:5] WT Direct -a0 
                                     
Adapter 0: Created VD 5

Adapter 0: Configured the Adapter!!

Exit Code: 0x00

252，就是raid卡里的 Enclosure Device ID

5：Slot Number

a0：表示Adapter #0

 

JBOD模式

启用raid卡的JBOD模式

# /opt/MegaRAID/MegaCli/MegaCli64 -AdpSetProp -EnableJBOD -1 -aALL
                                     
Adapter 0: Set JBOD to Enable success.

查看raid卡的功能的时候，就会发现

删掉 raid0

# /opt/MegaRAID/MegaCli/MegaCli64 -CfgLdDel -L5 -a0
                                     
Adapter 0: Deleted Virtual Drive-5(target id-5)

磁盘状态

# /opt/MegaRAID/MegaCli/MegaCli64  -PDList -aALL -Nolog|grep '^Firm'
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Unconfigured(good), Spun Up

JBOD模式

# /opt/MegaRAID/MegaCli/MegaCli64 -PDMakeJBOD -PhysDrv[252:5] -a0 
                                     
Adapter: 0: EnclId-252 SlotId-5 state changed to JBOD.

再查看磁盘状态

# /opt/MegaRAID/MegaCli/MegaCli64  -PDList -aALL -Nolog|grep '^Firm'
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: Online, Spun Up
Firmware state: JBOD