Linux挂载已分区的LVM磁盘

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查看新挂载的lvm磁盘

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[root@tomcat-node5 /]# fdisk  -l

Disk /dev/xvda: 42.9 GB, 42949672960 bytes
255 heads, 63 sectors/track, 5221 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: 0x00078f9c

    Device Boot      Start         End      Blocks   Id  System
/dev/xvda1   *           1        5222    41940992   83  Linux

Disk /dev/xvdb: 107.4 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 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/mapper/jhjhome1-lv_home: 32.2 GB, 32212254720 bytes
255 heads, 63 sectors/track, 3916 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/xvdc: 107.4 GB, 107374182400 bytes
255 heads, 63 sectors/track, 13054 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/xvdc是新挂载上去磁盘

直接挂着目录报错

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[root@jhjapp-tomcat-node5 ~]# mount /dev/xvdc /mnt
mount: unknown filesystem type 'LVM2_member'

挂载/dev/xvdc
pvscan
vgscan
lvscna

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[root@jhjapp-tomcat-node5 ~]# pvscan 
 [root@jhjapp-tomcat-node5 ~]# pvscan 
  PV /dev/xvdc   VG jhjhome    lvm2 [100.00 GiB / 1020.00 MiB free]
  PV /dev/xvdb   VG jhjhome1   lvm2 [100.00 GiB / 1020.00 MiB free]

改变vg名称 //因为之前Vg名称相同lvscan只能识别一个

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[root@jhjapp-tomcat-node5 ~]# vgs -v
    Finding all volume groups
    Finding volume group "jhjhome"
    Finding volume group "jhjhome1"
  VG       Attr   Ext   #PV #LV #SN VSize   VFree    VG UUID                                VProfile
  jhjhome  wz--n- 4.00m   1   5   0 100.00g 1020.00m UF6SKw-o3vb-TLdm-pA3S-TWWl-5Rw3-xyOcdD         
  jhjhome1 wz--n- 4.00m   1   5   0 100.00g 1020.00m WX0eQq-3BUy-q0TL-2HiU-VhgM-5dCc-6Q9Shv  
  -----------------------------------------------
[root@jhjapp-tomcat-node5 ~]# vgrename  UF6SKw-o3vb-TLdm-pA3S-TWWl-5Rw3-xyOcdD jhj2
  Volume group "jhjhome" successfully renamed to "jhj2"

vgscan

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[root@jhjapp-tomcat-node5 ~]# vgscan 
  Reading all physical volumes.  This may take a while...
  Found volume group "jhj2" using metadata type lvm2
  Found volume group "jhjhome1" using metadata type lvm2

lvscna未激活

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[root@jhjapp-tomcat-node5 ~]# lvscan 
  inactive          '/dev/jhj2/lv_home' [30.00 GiB] inherit
  inactive          '/dev/jhj2/lv_usr' [43.00 GiB] inherit
  inactive          '/dev/jhj2/lv_var' [20.00 GiB] inherit
  inactive          '/dev/jhj2/lv_tmp' [2.00 GiB] inherit
  inactive          '/dev/jhj2/lv_swap' [4.00 GiB] inherit
  ACTIVE            '/dev/jhjhome1/lv_home' [30.00 GiB] inherit
  ACTIVE            '/dev/jhjhome1/lv_usr' [43.00 GiB] inherit
  ACTIVE            '/dev/jhjhome1/lv_var' [20.00 GiB] inherit
  ACTIVE            '/dev/jhjhome1/lv_tmp' [2.00 GiB] inherit
  ACTIVE            '/dev/jhjhome1/lv_swap' [4.00 GiB] inherit
`

先激活vg

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[root@jhjapp-tomcat-node5 ~]# vgchange -ay jhj2
  5 logical volume(s) in volume group "jhj2" now active

再查看lv状态，发现已经活动的lv

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[root@jhjapp-tomcat-node5 ~]# lvscan 
  ACTIVE            '/dev/jhj2/lv_home' [30.00 GiB] inherit
  ACTIVE            '/dev/jhj2/lv_usr' [43.00 GiB] inherit
  ACTIVE            '/dev/jhj2/lv_var' [20.00 GiB] inherit
  ACTIVE            '/dev/jhj2/lv_tmp' [2.00 GiB] inherit
  ACTIVE            '/dev/jhj2/lv_swap' [4.00 GiB] inherit
  ACTIVE            '/dev/jhjhome1/lv_home' [30.00 GiB] inherit
  ACTIVE            '/dev/jhjhome1/lv_usr' [43.00 GiB] inherit
  ACTIVE            '/dev/jhjhome1/lv_var' [20.00 GiB] inherit
  ACTIVE            '/dev/jhjhome1/lv_tmp' [2.00 GiB] inherit
  ACTIVE            '/dev/jhjhome1/lv_swap' [4.00 GiB] inherit
-------------------------------
[root@jhjapp-tomcat-node5 ~]# lvdisplay 
  --- Logical volume ---
  LV Path                /dev/jhj2/lv_home
  LV Name                lv_home
  VG Name                jhj2
  LV UUID                qI3DV4-dkAW-jNdy-SmUL-CZEV-rA04-6TfXLn
  LV Write Access        read/write
  LV Creation host, time iZ25aocjopuZ, 2016-08-04 10:15:38 +0800
  LV Status              available
   open                 0
  LV Size                30.00 GiB
  Current LE             7680
  Segments               1
  Allocation             inherit
  Read ahead sectors     auto
  - currently set to     256
  Block device           253:5
   
  --- Logical volume ---
  LV Path                /dev/jhj2/lv_usr
  LV Name                lv_usr
..............

mount这个lv就可以访问了

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[root@jhjapp-tomcat-node5 ~]# mount /dev/jhj2/lv_home  /mnt
[root@jhjapp-tomcat-node5 ~]# ls /mnt/
jhjapp1  lost+found
[root@jhjapp-tomcat-node5 ~]#

如果vg名称不相同不需要改vg名称那个步骤 直接激活挂载