需求说明：公司最近来了一批服务器，用于大数据业务部署。数据节点服务器由14块物理磁盘，其中有2块是900G的盘，12块是4T的盘。在服务器系统安装时，进入系统的BIOS界面：1）将2块900G的磁盘做成raid1用作系统盘（顺便说一下：raid0最少需要1块磁盘；raid1最少需要2块磁盘；raid10最少需要4块磁盘，raid5至少需要3块磁盘）；2）将其中的2块4T的磁盘做成raid1，分别挂载到/data1和/data2用作大数据日志存储；3）另外的10块4T的磁盘在系统安装时没做raid也没做分区，打算在系统安装后，登录到系统终端通过命令行进行直接进行10块盘的格式化，并分别挂载到/data3、/data4、/data5、/data6、/data7、/data8、/data9、/data10、/data11、/data12，用作大数据业务的数据盘，文件格式为ext4，采用uuid方式挂载，挂载属性为noatime,nobarrier。

待服务器系统安装后，登录机器，使用"fdisk -l"命令，发现除了看到4块做raid的盘，其余的10块物理磁盘看不到（硬盘默认采用的是raid模式，如果不做raid阵列的话，就是别不了。可以在BIOS界面里修改硬盘模式为IDE模式或AHCI模式）：

[root@data-node01 ~]# fdisk -l

Disk /dev/sdb: 2001.1 GB, 2001111154688 bytes

255 heads, 63 sectors/track, 243287 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x0004a319

   Device Boot      Start         End      Blocks   Id  System

/dev/sdb1               1      243288  1954208768   83  Linux

Disk /dev/sdd: 4000.2 GB, 4000225165312 bytes

255 heads, 63 sectors/track, 486333 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk /dev/sdf: 4000.2 GB, 4000225165312 bytes

255 heads, 63 sectors/track, 486333 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk /dev/sde: 4000.2 GB, 4000225165312 bytes

255 heads, 63 sectors/track, 486333 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk /dev/sdh: 4000.2 GB, 4000225165312 bytes

255 heads, 63 sectors/track, 486333 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk /dev/sda: 899.5 GB, 899527213056 bytes

255 heads, 63 sectors/track, 109361 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00026ac4

   Device Boot      Start         End      Blocks   Id  System

/dev/sda1   *           1          52      409600   83  Linux

Partition 1 does not end on cylinder boundary.

/dev/sda2              52        4229    33554432   82  Linux swap / Solaris

/dev/sda3            4229      109362   844479488   83  Linux

Disk /dev/sdc: 1999.1 GB, 1999114010624 bytes

255 heads, 63 sectors/track, 243045 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x0006d390

   Device Boot      Start         End      Blocks   Id  System

/dev/sdc1               1      243046  1952258048   83  Linux

这时候，需要用到一款管理维护硬件RAID软件-MegaCli，可以通过它来了解当前raid卡的所有信息，包括 raid卡的型号，raid的阵列类型，raid 上各磁盘状态，等等。操作记录如下：

1）下载及安装MegaCLI工具

下载地址：https://pan.baidu.com/s/1TAGHjTA19ZR8MGODaqy7Mg

提取密码：msbq

下载到/usr/loca/src目录下

[root@data-node01 ~]# cd /usr/local/src/

[root@data-node01 src]# ls

ibm_utl_sraidmr_megacli-8.00.48_linux_32-64.zip

[root@data-node01 src]# unzip ibm_utl_sraidmr_megacli-8.00.48_linux_32-64.zip

[root@data-node01 src]# cd linux/

[root@data-node01 linux]# ls

Lib_Utils-1.00-09.noarch.rpm  MegaCli-8.00.48-1.i386.rpm

[root@data-node01 linux]# rpm -ivh Lib_Utils-1.00-09.noarch.rpm MegaCli-8.00.48-1.i386.rpm

说明：安装完毕之后MegaCli64所在路径为/opt/MegaRAID/MegaCli/MegaCli64，在此路径下可以运行MegaCli64工具，切换到其它路径下则不能执行，

此时为了使用方便，可以考虑将/opt/MegaRAID/MegaCli/MegaCli64追加到系统PATH变量，或者像下面这样做（建议）：

[root@data-node01 linux]# ln -s /opt/MegaRAID/MegaCli/MegaCli64 /bin/MegaCli64

[root@data-node01 linux]# ln -s /opt/MegaRAID/MegaCli/MegaCli64 /sbin/MegaCli64

2）使用MegaCli64命令进行相关操作

先查看磁盘数量。如下可以看出，一共有14块物理磁盘

[root@data-node01 linux]# MegaCli64 -PDList -aALL | egrep 'Enclosure Device ID|Slot Number'

Enclosure Device ID: 32

Slot Number: 0

Enclosure Device ID: 32

Slot Number: 1

Enclosure Device ID: 32

Slot Number: 2

Enclosure Device ID: 32

Slot Number: 3

Enclosure Device ID: 32

Slot Number: 4

Enclosure Device ID: 32

Slot Number: 5

Enclosure Device ID: 32

Slot Number: 6

Enclosure Device ID: 32

Slot Number: 7

Enclosure Device ID: 32

Slot Number: 8

Enclosure Device ID: 32

Slot Number: 9

Enclosure Device ID: 32

Slot Number: 10

Enclosure Device ID: 32

Slot Number: 11

Enclosure Device ID: 32

Slot Number: 12

Enclosure Device ID: 32

Slot Number: 13

接着查看磁盘信息

[root@data-node01 linux]# MegaCli64 -PDList -aALL

Adapter #0

Enclosure Device ID: 32

Slot Number: 0

Enclosure position: 0

Device Id: 0

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: Online, Spun Up

SAS Address(0): 0x500056b3983fbac0

Connected Port Number: 0(path0)

Inquiry Data:         4837K2DVF7DETOSHIBA MG04ACA400NY                        FK3D

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 Temperature :30C (86.00 F)

...........

...........

Enclosure Device ID: 32

Slot Number: 3

Enclosure position: 0

Device Id: 3

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(good), Spun Up

SAS Address(0): 0x500056b3983fbac3

Connected Port Number: 0(path0)

Inquiry Data:         4838K1VCF7DETOSHIBA MG04ACA400NY                        FK3D

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 Temperature :30C (86.00 F)

...........

...........

如上命令结果信息中，注意查看"Firmware state"的状态：

如果该状态为Online，就说明该磁盘已被做成raid阵列，

如果该状态为unconfigured(good)，就说明该磁盘没有被做成raid阵列，但状态OK。

由上面命令可知，前2块4T的磁盘做成了raid，其余10块4T的磁盘没有做raid，另2块900G的磁盘做成了raid。

--------------------------------------------------------------------------------------

现在的做法是：

通过MegaCli工具将那10块4T的磁盘分别做成raid0，然后格式化成ext4，并使用uuid方式挂载。

依次对第3-12块盘做成raid0阵列，其中：

-r0表示做成raid0阵列，[32:2]中的32为Enclosure Device ID，5为Slot Number。

WB Direct：磁盘Write back

[root@data-node01 linux]# MegaCli64 -CfgLdAdd -r0[32:2] WB Direct -a0

[root@data-node01 linux]# MegaCli64 -CfgLdAdd -r0[32:3] WB Direct -a0

[root@data-node01 linux]# MegaCli64 -CfgLdAdd -r0[32:4] WB Direct -a0

[root@data-node01 linux]# MegaCli64 -CfgLdAdd -r0[32:5] WB Direct -a0

[root@data-node01 linux]# MegaCli64 -CfgLdAdd -r0[32:6] WB Direct -a0

[root@data-node01 linux]# MegaCli64 -CfgLdAdd -r0[32:7] WB Direct -a0

[root@data-node01 linux]# MegaCli64 -CfgLdAdd -r0[32:8] WB Direct -a0

[root@data-node01 linux]# MegaCli64 -CfgLdAdd -r0[32:9] WB Direct -a0

[root@data-node01 linux]# MegaCli64 -CfgLdAdd -r0[32:10] WB Direct -a0

[root@data-node01 linux]# MegaCli64 -CfgLdAdd -r0[32:11] WB Direct -a0

然后再次查看磁盘情况，发现"Firmware state"的状态都为Online，即所有磁盘都在raid阵列中了。

[root@data-node01 linux]# MegaCli64 -PDList -aALL

然后使用"fdisk -l"就能发现所有的物理磁盘了

[root@data-node01 linux]# fdisk -l

Disk /dev/sdb: 1993.4 GB, 1993414541312 bytes

255 heads, 63 sectors/track, 242352 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x000cd8df

   Device Boot      Start         End      Blocks   Id  System

/dev/sdb1               1      242353  1946692608   83  Linux

Disk /dev/sda: 899.5 GB, 899527213056 bytes

255 heads, 63 sectors/track, 109361 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x000b231b

   Device Boot      Start         End      Blocks   Id  System

/dev/sda1   *           1          52      409600   83  Linux

Partition 1 does not end on cylinder boundary.

/dev/sda2              52        4229    33554432   82  Linux swap / Solaris

/dev/sda3            4229      109362   844479488   83  Linux

Disk /dev/sdc: 2006.8 GB, 2006810624000 bytes

255 heads, 63 sectors/track, 243980 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x000010e5

   Device Boot      Start         End      Blocks   Id  System

/dev/sdc1               1      243981  1959774208   83  Linux

Disk /dev/sdd: 4000.2 GB, 4000225165312 bytes

255 heads, 63 sectors/track, 486333 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk /dev/sde: 4000.2 GB, 4000225165312 bytes

255 heads, 63 sectors/track, 486333 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk /dev/sdf: 4000.2 GB, 4000225165312 bytes

255 heads, 63 sectors/track, 486333 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk /dev/sdg: 4000.2 GB, 4000225165312 bytes

255 heads, 63 sectors/track, 486333 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk /dev/sdh: 4000.2 GB, 4000225165312 bytes

255 heads, 63 sectors/track, 486333 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk /dev/sdi: 4000.2 GB, 4000225165312 bytes

255 heads, 63 sectors/track, 486333 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk /dev/sdj: 4000.2 GB, 4000225165312 bytes

255 heads, 63 sectors/track, 486333 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk /dev/sdk: 4000.2 GB, 4000225165312 bytes

255 heads, 63 sectors/track, 486333 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk /dev/sdl: 4000.2 GB, 4000225165312 bytes

255 heads, 63 sectors/track, 486333 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

Disk /dev/sdm: 4000.2 GB, 4000225165312 bytes

255 heads, 63 sectors/track, 486333 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

Sector size (logical/physical): 512 bytes / 512 bytes

I/O size (minimum/optimal): 512 bytes / 512 bytes

Disk identifier: 0x00000000

---------------------------------------------------------------------------

对这10块磁盘进行格式化，脚本如下：

[root@data-node01 ~]# cat disk.list

/dev/sdd

/dev/sde

/dev/sdf

/dev/sdg

/dev/sdh

/dev/sdi

/dev/sdj

/dev/sdk

/dev/sdl

/dev/sdm

[root@data-node01 ~]# cat mkfs.disk.sh

#!/bin/bash

for i in `cat /root/disk.list`

do

 echo 'y' | /sbin/mkfs.ext4 $i &

done

[root@data-node01 ~]# sh -x mkfs.disk.sh

接着进行挂载

[root@data-node01 ~]# /bin/mkdir /data{3,4,5,6,7,8,9,10,11,12}

查看这10块盘的uuid（下面两种方式都可以）

[root@data-node01 ~]# blkid

[root@data-node01 ~]# ls -l /dev/disk/by-uuid/

[root@data-node01 ~]# blkid

/dev/sda3: UUID="964bec23-58b4-4a6b-a96f-f2e3222fc096" TYPE="ext4"

/dev/sdc1: UUID="9acdef9d-fbe1-4d9f-82ff-9e9920df868e" TYPE="ext4"

/dev/sdb1: UUID="696f5971-4c7c-4312-a1c3-a20fc3772299" TYPE="ext4"

/dev/sda1: UUID="ee26ded4-8334-4a0f-84bc-cc97d103714e" TYPE="ext4"

/dev/sda2: UUID="316cb693-05fe-473d-a2ff-3c3c0e0e6c3d" TYPE="swap"

/dev/sdd: UUID="f92e73be-526d-4d84-8f5b-95273ebbd352" TYPE="ext4"

/dev/sde: UUID="0a6404ea-60dc-4e3e-b542-48a313e149dd" TYPE="ext4"

/dev/sdf: UUID="05891dd0-256a-4f7f-a2de-f1f858eb2a95" TYPE="ext4"

/dev/sdg: UUID="77df1f77-0168-430e-96a3-f2eb44e15242" TYPE="ext4"

/dev/sdh: UUID="e1f11339-ad68-44a1-a600-066094439ed2" TYPE="ext4"

/dev/sdi: UUID="628f1658-d8f9-4573-a124-0712b0c29e90" TYPE="ext4"

/dev/sdj: UUID="9ee336b0-3960-4cfd-9cb6-c92535f45ebd" TYPE="ext4"

/dev/sdk: UUID="bb6c1e2d-41b8-407d-b6df-df2e3ffc9c52" TYPE="ext4"

/dev/sdl: UUID="9ca6aecf-e0f1-4338-a7eb-e8a1d2f3b017" TYPE="ext4"

/dev/sdm: UUID="a5bf2880-4981-462a-8042-c6e913627c3d" TYPE="ext4" 

单独找出这10块磁盘的uuid

[root@data-node01 ~]# blkid|tail -10|awk '{print $2}'

UUID="f92e73be-526d-4d84-8f5b-95273ebbd352"

UUID="0a6404ea-60dc-4e3e-b542-48a313e149dd"

UUID="05891dd0-256a-4f7f-a2de-f1f858eb2a95"

UUID="77df1f77-0168-430e-96a3-f2eb44e15242"

UUID="e1f11339-ad68-44a1-a600-066094439ed2"

UUID="628f1658-d8f9-4573-a124-0712b0c29e90"

UUID="9ee336b0-3960-4cfd-9cb6-c92535f45ebd"

UUID="bb6c1e2d-41b8-407d-b6df-df2e3ffc9c52"

UUID="9ca6aecf-e0f1-4338-a7eb-e8a1d2f3b017"

UUID="a5bf2880-4981-462a-8042-c6e913627c3d"

[root@data-node01 ~]# blkid|tail -10|awk '{print $2}'|sed 's/"//g'

UUID=f92e73be-526d-4d84-8f5b-95273ebbd352

UUID=0a6404ea-60dc-4e3e-b542-48a313e149dd

UUID=05891dd0-256a-4f7f-a2de-f1f858eb2a95

UUID=77df1f77-0168-430e-96a3-f2eb44e15242

UUID=e1f11339-ad68-44a1-a600-066094439ed2

UUID=628f1658-d8f9-4573-a124-0712b0c29e90

UUID=9ee336b0-3960-4cfd-9cb6-c92535f45ebd

UUID=bb6c1e2d-41b8-407d-b6df-df2e3ffc9c52

UUID=9ca6aecf-e0f1-4338-a7eb-e8a1d2f3b017

UUID=a5bf2880-4981-462a-8042-c6e913627c3d

将这10块磁盘的uuid好放到/etc/fastab开启启动文件里

[root@data-node01 ~]# cat /root/a.txt

/data3                  ext4    noatime,nobarrier    0 0

/data4                  ext4    noatime,nobarrier    0 0

/data5                  ext4    noatime,nobarrier    0 0

/data6                  ext4    noatime,nobarrier    0 0

/data7                  ext4    noatime,nobarrier    0 0

/data8                  ext4    noatime,nobarrier    0 0

/data9                  ext4    noatime,nobarrier    0 0

/data10                 ext4    noatime,nobarrier    0 0

/data11                 ext4    noatime,nobarrier    0 0

/data12                 ext4    noatime,nobarrier    0 0

[root@data-node01 ~]# blkid|tail -10|awk '{print $2}'|sed 's/"//g'|paste - /root/a.txt  >> /etc/fastab              #"paste -" 表示将两个文件内容合并

UUID=f92e73be-526d-4d84-8f5b-95273ebbd352 /data3                  ext4    noatime,nobarrier    0 0

UUID=0a6404ea-60dc-4e3e-b542-48a313e149dd /data4                  ext4    noatime,nobarrier    0 0

UUID=05891dd0-256a-4f7f-a2de-f1f858eb2a95 /data5                  ext4    noatime,nobarrier    0 0

UUID=77df1f77-0168-430e-96a3-f2eb44e15242 /data6                  ext4    noatime,nobarrier    0 0

UUID=e1f11339-ad68-44a1-a600-066094439ed2 /data7                  ext4    noatime,nobarrier    0 0

UUID=628f1658-d8f9-4573-a124-0712b0c29e90 /data8                  ext4    noatime,nobarrier    0 0

UUID=9ee336b0-3960-4cfd-9cb6-c92535f45ebd /data9                  ext4    noatime,nobarrier    0 0

UUID=bb6c1e2d-41b8-407d-b6df-df2e3ffc9c52 /data10                 ext4    noatime,nobarrier    0 0

UUID=9ca6aecf-e0f1-4338-a7eb-e8a1d2f3b017 /data11                 ext4    noatime,nobarrier    0 0

UUID=a5bf2880-4981-462a-8042-c6e913627c3d /data12                 ext4    noatime,nobarrier    0 0

最后将服务器通过"reboot"重启，重启之后查看磁盘及挂载状态，就能看到那10块磁盘的挂载情况

[root@data-node01 ~]# df -h

Filesystem      Size  Used Avail Use% Mounted on

/dev/sda3       793G  3.1G  750G   1% /

tmpfs            63G     0   63G   0% /dev/shm

/dev/sda1       380M   78M  282M  22% /boot

/dev/sdb1       1.8T   68M  1.7T   1% /data1

/dev/sdc1       1.8T   68M  1.8T   1% /data2

/dev/sdd        3.6T   68M  3.4T   1% /data3

/dev/sde        3.6T   68M  3.4T   1% /data4

/dev/sdf        3.6T   68M  3.4T   1% /data5

/dev/sdg        3.6T   68M  3.4T   1% /data6

/dev/sdh        3.6T   68M  3.4T   1% /data7

/dev/sdi        3.6T   68M  3.4T   1% /data8

/dev/sdj        3.6T   68M  3.4T   1% /data9

/dev/sdk        3.6T   68M  3.4T   1% /data10

/dev/sdl        3.6T   68M  3.4T   1% /data11

/dev/sdm        3.6T   68M  3.4T   1% /data12

[root@data-node01 ~]# mount

/dev/sda3 on / type ext4 (rw)

proc on /proc type proc (rw)

sysfs on /sys type sysfs (rw)

devpts on /dev/pts type devpts (rw,gid=5,mode=620)

tmpfs on /dev/shm type tmpfs (rw)

/dev/sda1 on /boot type ext4 (rw)

/dev/sdb1 on /data1 type ext4 (rw)

/dev/sdc1 on /data2 type ext4 (rw)

/dev/sdd on /data3 type ext4 (rw,noatime,nobarrier)

/dev/sde on /data4 type ext4 (rw,noatime,nobarrier)

/dev/sdf on /data5 type ext4 (rw,noatime,nobarrier)

/dev/sdg on /data6 type ext4 (rw,noatime,nobarrier)

/dev/sdh on /data7 type ext4 (rw,noatime,nobarrier)

/dev/sdi on /data8 type ext4 (rw,noatime,nobarrier)

/dev/sdj on /data9 type ext4 (rw,noatime,nobarrier)

/dev/sdk on /data10 type ext4 (rw,noatime,nobarrier)

/dev/sdl on /data11 type ext4 (rw,noatime,nobarrier)

/dev/sdm on /data12 type ext4 (rw,noatime,nobarrier)

none on /proc/sys/fs/binfmt_misc type binfmt_misc (rw)

------------MegaCli相关命令使用梳理------------

1）添加新的磁盘（即对新的磁盘做raid阵列），做成raid0阵列

[root@date-test ~]# MegaCli64 -CfgLdAdd -r0[32:5] WB Direct -a0

说明：

r0: raid0，即将这快盘做成raid0磁盘阵列

[32:5]:32为Enclosure Device ID，5为Slot Number。即磁盘的序列号信息

WB Direct：磁盘Write back

2）添加一块带有残余信息的磁盘

[root@date-test ~]# MegaCli64 -cfgforeign -scan -a0

There are 1 foreign configuration(s) on controller 0.

Exit Code: 0x00

说明：由于是新插入的盘，而且是块有数据的盘，所有提示有外部配置。

[root@date-test ~]# MegaCli64 -cfgforeign -clear -a0

Foreign configuration 0 is cleared on controller 0.

Exit Code: 0x00

[root@date-test ~]# MegaCli64 -cfgforeign -scan -a0

There is no foreign configuration on controller 0.

Exit Code: 0x00

说明：清除外部配置信息，清除后再次进行查看

[root@date-test ~]# MegaCli64 -CfgLdAdd -r0[32:5] WB Direct -a0

Adapter 0: Created VD 1

Adapter 0: Configured the Adapter!!

Exit Code: 0x00

3）查看Firmware state

[root@date-test ~]# 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

说明：Online状态表示该磁盘已被做成raid阵列，为raid在线状态；如果是unconfigured(good)状态，就说明该磁盘没有被做成raid阵列，但状态OK。

4）关闭JBOD模式

[root@date-test ~]# MegaCli64 -AdpSetProp -EnableJBOD -0 -aALL

Adapter 0: Set JBOD to Disable success.

Exit Code: 0x00

5）检查raild阵列的级别和配置（MegaCli64 -LDInfo -Lall -aALL）

[root@date-test ~]# MegaCli64 -LDInfo -LALL -aAll | grep RAID

RAID Level          : Primary-1, Secondary-0, RAID Level Qualifier-0

RAID Level          : Primary-1, Secondary-0, RAID Level Qualifier-0

RAID Level          : Primary-1, Secondary-0, RAID Level Qualifier-0

RAID Level          : Primary-0, Secondary-0, RAID Level Qualifier-0

6）检查raid卡信息

[root@date-test ~]# MegaCli64 -AdpAllInfo -aALL

7）查看硬盘信息

[root@date-test ~]# MegaCli64 -PDList -aALL 

8）查看电池信息

[root@date-test ~]# MegaCli64 -AdpBbuCmd -aAll 

9）查看raid卡日志

[root@date-test ~]# MegaCli64 -FwTermLog -Dsply -aALL 

10）显示适配器个数

[root@date-test ~]# MegaCli64 -adpCount  

11）显示适配器时间

[root@date-test ~]# MegaCli64 -AdpGetTime –aALL

12）显示所有适配器配置信息

[root@date-test ~]# MegaCli64 -AdpAllInfo -aAll 

13）显示所有逻辑磁盘组信息

[root@date-test ~]# MegaCli64 -LDInfo -LALL -aAll

14）显示所有的物理信息

[root@date-test ~]# MegaCli64 -PDList -aAll

15）查看充电状态

[root@date-test ~]# MegaCli64 -AdpBbuCmd -GetBbuStatus -aALL |grep 'Charger Status'

16）查看磁盘缓存策略（下面四种方式）

[root@date-test ~]# MegaCli64 -LDGetProp -Cache -L0 -a0

[root@date-test ~]# MegaCli64 -LDGetProp -Cache -L1 -a0

[root@date-test ~]# MegaCli64 -LDGetProp -Cache -LALL -a0

[root@date-test ~]# MegaCli64 -LDGetProp -Cache -LALL -aALL

[root@date-test ~]# MegaCli64 -LDGetProp -DskCache -LALL -aALL  

17）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

[root@date-test ~]# MegaCli64 -LDSetProp WT|WB|NORA|RA|ADRA -L0 -a0

或者

[root@date-test ~]# MegaCli64 -LDSetProp -Cached|-Direct -L0 -a0

或者

[root@date-test ~]# MegaCli64 -LDSetProp -EnDskCache|-DisDskCache -L0 -a0  

18）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

[root@date-test ~]# MegaCli64 -CfgLdAdd -r5 [1:2,1:3,1:4] WB Direct -Hsp[1:5] -a0  

19）创建一个raid5阵列，由物理盘2,3,4构成，不指定热备盘。

[root@date-test ~]# MegaCli64 -CfgLdAdd -r5 [1:2,1:3,1:4] WB Direct -a0  

20）删除阵列

[root@date-test ~]# MegaCli64 -CfgLdDel -L1 -a0  

21）在线添加磁盘

[root@date-test ~]# MegaCli64 -LDRecon -Start -r5 -Add -PhysDrv[1:4] -L1 -a0  

22）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。

[root@date-test ~]# MegaCli64 -LDInit -ShowProg -LALL -aALL

或者以动态可视化文字界面显示

[root@date-test ~]# MegaCli64 -LDInit -ProgDsply -LALL -aALL 

23）查看阵列后台初始化进度

[root@date-test ~]# MegaCli64 -LDBI -ShowProg -LALL -aALL

或者以动态可视化文字界面显示

[root@date-test ~]# MegaCli64 -LDBI -ProgDsply -LALL -aALL 

24）指定第5块盘作为全局热备

[root@date-test ~]# MegaCli64 -PDHSP -Set [-EnclAffinity] [-nonRevertible] -PhysDrv[1:5] -a0  

25）指定为某个阵列的专用热备

[root@date-test ~]# MegaCli64 -PDHSP -Set [-Dedicated [-Array1]] [-EnclAffinity] [-nonRevertible] -PhysDrv[1:5] -a0  

26）删除全局热备

[root@date-test ~]# MegaCli64 -PDHSP -Rmv -PhysDrv[1:5] -a0  

27）将某块物理盘下线/上线

[root@date-test ~]# MegaCli64 -PDOffline -PhysDrv [1:4] -a0

[root@date-test ~]# MegaCli64 -PDOnline -PhysDrv [1:4] -a0  

28）查看物理磁盘重建进度

[root@date-test ~]# MegaCli64 -PDRbld -ShowProg -PhysDrv [1:5] -a0

以动态可视化文字界面显示

[root@date-test ~]# MegaCli64 -PDRbld -ProgDsply -PhysDrv [1:5] -a0

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