MegaRAID管理磁盘
CentOS 7 MegaRAID 管理磁盘
云计算 Add comments
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] -aALL252，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 UpForeign
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: 0x00252，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 UpJBOD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