CentOS6.3挂载DELL MD3220虚拟磁盘

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<b>1、系统环境</b>

[root@mail1 ~]# cat /etc/redhat-release

CentOS release 6.3 (Final)

You have new mail in /var/spool/mail/root

[root@mail1 ~]# uname -m

x86_64

[root@mail1 ~]# uname -r

2.6.32-279.el6.x86_64

<b>5、CentOS6.3 64bit挂载MD3220虚拟磁盘</b>

5.1 扫描新增的虚拟磁盘

rescan_dm_devs 命令扫描主机服务器系统，查找映射至主机服务器的现有和新增的虚拟磁盘。

[root@mail1 ~]# rescan_dm_devs

Host adapter mpt2sas host1 controller /sys/class/scsi_host/host1/device/bsg found.

scanning host 1 ctrl /sys/class/scsi_host/host1/device/bsg result

LUN 0 is not mapped to a disk on controller /sys/class/scsi_host/host1/device/bsg

scsi remove-single-device mpt2sas 1 0 /sys/class/scsi_host/host1/device/bsg 0

rescan the devices on mpt2sas host1 controller /sys/class/scsi_host/host1/device/bsg ...

Done.

5.2 显示多路径设备拓扑

[root@mail1  ~]# multipath -ll

mpathb (3690b11c00022bafc000005725105d5df) dm-0 DELL,MD32xx

size=2.2T features='3 queue_if_no_path pg_init_retries 50' hwhandler='1 rdac' wp=rw

`-+- policy='round-robin 0' prio=6 status=active

 `- 1:0:0:0 sdb 8:16 active ready running

5.3 新建分区

[root@mail1 ~]# fdisk -l /dev/mapper/mpathb

Disk /dev/mapper/mpathb: 2398.4 GB, 2398352687616 bytes

255 heads, 63 sectors/track, 291583 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

5.4 磁盘空间大于2T，使用parted新建分区

[root@mail1 ~]# parted /dev/mapper/mpathb

GNU Parted 2.1

Using /dev/mapper/mpathb

Welcome to GNU Parted! Type 'help' to view a list of commands.

(parted) mklabel gpt                                                     

(parted) mkpart primary 0% 100%                                          

(parted) print                                                           

Model: Linux device-mapper (multipath) (dm)

Disk /dev/mapper/mpathb: 2398GB

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

Partition Table: gpt

Number Start   End     Size    File system Name     Flags

 1      1049kB 2398GB 2398GB               primary

(parted) quit                                                            

Information: You may need to update /etc/fstab.

5.5 向 Device Mapper 添加新分区

kpartx 命令可将 fdisk 新创建的分区添加至 Device Mapper 的可用分区列

表。请参阅以下示例，其中 mpath&lt;x&gt; 是要在其上创建分区的设备节点。

# kpartx –a /dev/mapper/mpath&lt;x&gt;

如果成功执行，则命令不会显示输出。要验证命令是否成功并查看确切的分 区命名，用户可使用这些命令查看分配的完整分区名

[root@mail1 mdstoragemanager]# cd /dev/mapper/

[root@mail1 mapper]# ls

control mpathb mpathbp1

5.6 在 Device Mapper 分区上创建文件系统

[root@mail1 mapper]# mkfs -t ext4 /dev/mapper/mpathbp1

mke2fs 1.41.12 (17-May-2010)

Filesystem label=

OS type: Linux

Block size=4096 (log=2)

Fragment size=4096 (log=2)

Stride=0 blocks, Stripe width=0 blocks

146391040 inodes, 585534976 blocks

29276748 blocks (5.00%) reserved for the super user

First data block=0

Maximum filesystem blocks=4294967296

17870 block groups

32768 blocks per group, 32768 fragments per group

8192 inodes per group

Superblock backups stored on blocks:

        32768, 98304, 163840, 229376, 294912, 819200, 884736, 1605632, 2654208,

        4096000, 7962624, 11239424, 20480000, 23887872, 71663616, 78675968,

        102400000, 214990848, 512000000, 550731776

Writing inode tables: done                           

Creating journal (32768 blocks): done

Writing superblocks and filesystem accounting information: done

This filesystem will be automatically checked every 38 mounts or

180 days, whichever comes first. Use tune2fs -c or -i to override.

[root@mail1 mapper]# tune2fs -c -1 /dev/mapper/mpathbp1

tune2fs 1.41.12 (17-May-2010)

Setting maximal mount count to -1

mount /dev/mapper/mpathbp1 /data

5.8 查看分区状况

[root@mail1 ~]# df -hT

Filesystem    Type    Size Used Avail Use% Mounted on

/dev/sda3     ext4     12G 604M   11G   6% /

tmpfs        tmpfs    7.8G     0 7.8G   0% /dev/shm

/dev/sda1     ext4    504M   54M 425M 12% /boot

/dev/sda9     ext4    794G   79G 676G 11% /home

/dev/sda2     ext4    247G 188M 234G   1% /index

/dev/sda6     ext4     12G 622M   11G   6% /opt

/dev/sda7     ext4     12G 1.2G   11G 11% /usr

/dev/sda8     ext4     12G 232M   11G   3% /var

/dev/mapper/mpathbp1

              ext4    2.2T 167G 1.9T   8% /data

<b>4、卸载 PowerVault MD 存储软件</b>

从 Linux 中卸载 MD 存储软件

4.1 默认情况下， PowerVault MD Storage Manager 安装在 /opt/dell/mdstoragemanager 目录中。如果在安装过程中使用其他目录， 则应在执行卸载过程之前浏览至该目录。

# cd /opt/dell/mdstoragesoftware/mdstoragemanager

4.2 从安装目录中，打开 Uninstall Dell MD Storage Software 目录。

# cd Uninstall\ PowerVault\ Modular\ Disk\ Storage\ Manager/

# ls

InstallScript.iap_xml        Uninstall PowerVault Modular Disk Storage Manager

installvariables.properties Uninstall PowerVault Modular Disk Storage Manager.lax

uninstaller.jar

4.3 运行文件Uninstall PowerVault Modular Disk Storage Manager

# ./Uninstall\ PowerVault\ Modular\ Disk\ Storage\ Manager

Preparing SILENT Mode Uninstallation...

===============================================================================

PowerVault Modular Disk Storage Manager          (created with InstallAnywhere)

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

Uninstalling...

………略………

*************************

Uninstallation Complete. #卸载完毕

接下来将使用Iometer 测试MD3220 IO性能。

MD3220 四部曲：

本文转自pandazhai 51CTO博客，原文链接:http://blog.51cto.com/dreamway/1131557