multipath多路径存储配置

1：检查存储盘

[root@b28-backup ~]# cd /dev/mapper/

[root@b28-backup mapper]# ls -l

total 0

crw------- 1 root root  10, 62 May 30 11:02 control

brw-rw---- 1 root disk 253,  0 May 30 11:33 mpath0

brw-rw---- 1 root disk 253,  2 May 30 11:40 mpath0p1

brw-rw---- 1 root disk 253,  1 May 30 11:37 mpath1

brw-rw---- 1 root disk 253,  3 May 30 11:37 mpath1p1

2：检查存储配置文件

[root@b28-backup ~]# cd /etc/

[root@b28-backup ~]# ls –l multipath.conf

此配置文件如果不存在可以从centos上拷贝过来

3：修改配置文件

[root@b28-backup ~]# vi multipath.conf

blacklist {

        devnode "*"

}

注释掉：#  devnode "*"

4：启动服务

[root@b28-backup ~]# chkconfig multipathd on

Start multipathd:

[root@b28-backup ~]# service multipathd start

List multipath devices:

5：配置过程

[root@b28-backup ~]# parted  /dev/mapper/mpath1

GNU Parted 1.8.1

Using /dev/mapper/mpath1

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

(parted) mklabel gpt                                                     

(parted) show print                                                      

  check NUMBER                             do a simple check on the file system

  cp [FROM-DEVICE] FROM-NUMBER TO-NUMBER   copy file system to another partition

  help [COMMAND]                           prints general help, or help on COMMAND

  mklabel,mktable LABEL-TYPE               create a new disklabel (partition table)

  mkfs NUMBER FS-TYPE                      make a FS-TYPE file system on partititon NUMBER

  mkpart PART-TYPE [FS-TYPE] START END     make a partition

  mkpartfs PART-TYPE FS-TYPE START END     make a partition with a file system

  move NUMBER START END                    move partition NUMBER

  name NUMBER NAME                         name partition NUMBER as NAME

  print [free|NUMBER|all]                  display the partition table, a partition, or all devices

  quit                                     exit program

  rescue START END                         rescue a lost partition near START and END

  resize NUMBER START END                  resize partition NUMBER and its file system

  rm NUMBER                                delete partition NUMBER

  select DEVICE                            choose the device to edit

  set NUMBER FLAG STATE                    change the FLAG on partition NUMBER

  toggle [NUMBER [FLAG]]                   toggle the state of FLAG on partition NUMBER

  unit UNIT                                set the default unit to UNIT

  version                                  displays the current version of GNU Parted and copyright

        information

 

Model: Linux device-mapper (dm)

Disk /dev/mapper/mpath1: 5995GB

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

Partition Table: gpt

 

Number  Start  End  Size  File system  Name  Flags

 

(parted) mklabel gpt                                                      

Warning: The existing disk label on /dev/mapper/mpath1 will be destroyed and all data on this disk

will be lost. Do you want to continue?

parted: invalid token: gpt

Yes/No? yes                                                              

New disk label type?  [gpt]? gpt                                         

(parted) show print                                                       

  check NUMBER                             do a simple check on the file system

  cp [FROM-DEVICE] FROM-NUMBER TO-NUMBER   copy file system to another partition

  help [COMMAND]                           prints general help, or help on COMMAND

  mklabel,mktable LABEL-TYPE               create a new disklabel (partition table)

  mkfs NUMBER FS-TYPE                      make a FS-TYPE file system on partititon NUMBER

  mkpart PART-TYPE [FS-TYPE] START END     make a partition

  mkpartfs PART-TYPE FS-TYPE START END     make a partition with a file system

  move NUMBER START END                    move partition NUMBER

  name NUMBER NAME                         name partition NUMBER as NAME

  print [free|NUMBER|all]                  display the partition table, a partition, or all devices

  quit                                     exit program

  rescue START END                         rescue a lost partition near START and END

  resize NUMBER START END                  resize partition NUMBER and its file system

  rm NUMBER                                delete partition NUMBER

  select DEVICE                            choose the device to edit

  set NUMBER FLAG STATE                    change the FLAG on partition NUMBER

  toggle [NUMBER [FLAG]]                   toggle the state of FLAG on partition NUMBER

  unit UNIT                                set the default unit to UNIT

  version                                  displays the current version of GNU Parted and copyright

        information

 

Model: Linux device-mapper (dm)

Disk /dev/mapper/mpath1: 5995GB

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

Partition Table: gpt

 

Number  Start  End  Size  File system  Name  Flags

 

(parted) mkpart primary 1   5995GB

(parted) show print                                                       

  check NUMBER                             do a simple check on the file system

  cp [FROM-DEVICE] FROM-NUMBER TO-NUMBER   copy file system to another partition

  help [COMMAND]                           prints general help, or help on COMMAND

  mklabel,mktable LABEL-TYPE               create a new disklabel (partition table)

  mkfs NUMBER FS-TYPE                      make a FS-TYPE file system on partititon NUMBER

  mkpart PART-TYPE [FS-TYPE] START END     make a partition

  mkpartfs PART-TYPE FS-TYPE START END     make a partition with a file system

  move NUMBER START END                    move partition NUMBER

  name NUMBER NAME                         name partition NUMBER as NAME

  print [free|NUMBER|all]                  display the partition table, a partition, or all devices

  quit                                     exit program

  rescue START END                         rescue a lost partition near START and END

  resize NUMBER START END                  resize partition NUMBER and its file system

  rm NUMBER                                delete partition NUMBER

  select DEVICE                            choose the device to edit

  set NUMBER FLAG STATE                    change the FLAG on partition NUMBER

  toggle [NUMBER [FLAG]]                   toggle the state of FLAG on partition NUMBER

  unit UNIT                                set the default unit to UNIT

  version                                  displays the current version of GNU Parted and copyright

        information

 

Model: Linux device-mapper (dm)

Disk /dev/mapper/mpath1: 5995GB

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

Partition Table: gpt

 

Number  Start   End     Size    File system  Name     Flags

 1      17.4kB  5995GB  5995GB               primary      

 

(parted) quit                                                             

Information: Don't forget to update /etc/fstab, if necessary.

6：格式化磁盘

[root@b28-backup ~]# cd /dev/mapper/

[root@b28-backup mapper]# ls -l

brw-rw---- 1 root disk 253,  0 May 30 11:33 mpath0

brw-rw---- 1 root disk 253,  2 May 30 11:40 mpath0p1

brw-rw---- 1 root disk 253,  1 May 30 11:37 mpath1

brw-rw---- 1 root disk 253,  3 May 30 11:37 mpath1p1

[root@b28-backup mapper]#  mkfs.ext3 /dev/mapper/mpath1p1

7：挂载存储盘

[root@b28-backup mapper]# mount  /dev/mapper/mpath1p1 /data

8：存储随机启动设置

[root@b28-backup etc]# vi  fstab

LABEL=/                 /                       ext3    defaults        1 1

LABEL=/boot             /boot                   ext3    defaults        1 2

tmpfs                   /dev/shm                tmpfs   defaults        0 0

devpts                  /dev/pts                devpts  gid=5,mode=620  0 0

sysfs                   /sys                    sysfs   defaults        0 0

proc                    /proc                   proc    defaults        0 0

LABEL=SW-cciss/c0d0p2   swap                    swap    defaults        0 0

 

增加

/dev/mapper/mpath1p1   /data_backup    ext3    defaults   0 0

 

9：reboot重启检查

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