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Linux下挂载LVM遇到卷组同名的解决方法

参考此文解决:
http://www.hackbase.com/tech/2011-04-29/63525.html

下面是引用此文的内容

周末朋友的服务器硬盘出问题了,让IDC的人挂了个IDE硬盘把系统安装好,然后再挂上以前的SATA硬盘,想把数据倒腾出来,结果哥们发现他搞不定,给我打电话求助。我远程上去看了下,发现2块盘系统做的都是LVM分区格式8e,不是ext3的83,难怪他不会挂载,而且还有个问题就是卷组都是默认安装的同一个名字VolGroup00
  [root@locallhost ~]# pvs           ##好命令,显示所有的lvm相关的物理卷:PV
  PV         VG         Fmt  Attr PSize   PFree
  /dev/hda2  VolGroup00 lvm2 a-    74.41G    0
  /dev/sda2  VolGroup00 lvm2 a-   232.78G    0
  hda2是新系统盘74G多,sda2是老数据盘232G多。卷组名称一样,因为2个系统安装的时候都是默认安装的。
  [root@locallhost ~]# vgs           ##好命令,显示所有的lvm相关的卷组:VG
  VG         #PV #LV #SN Attr   VSize   VFree
  VolGroup00   1   2   0 wz--n- 232.78G    0
  VolGroup00   1   2   0 wz--n-  74.41G    0
  我们先用vgrename改卷组名:
  [root@locallhost ~]# vgrename VolGroup00 aaalvm
  Found more than one VG called VolGroup00. Please supply VG uuid.
  直接报有同名,需要用uuid。查uuid可以用vgdisplay或vgs -v
  [root@locallhost ~]# vgdisplay
  --- Volume group ---
  VG Name               VolGroup00
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  3
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                2
  Open LV               2
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               232.78 GB
  PE Size               32.00 MB
  Total PE              7449
  Alloc PE / Size       7449 / 232.78 GB
  Free  PE / Size       0 / 0
  VG UUID               bAydq6-rv9e-wCa0-iK2f-zFWn-UBUr-4AR3Ct
  --- Volume group ---
  VG Name               VolGroup00
  System ID
  Format                lvm2
  Metadata Areas        1
  Metadata Sequence No  3
  VG Access             read/write
  VG Status             resizable
  MAX LV                0
  Cur LV                2
  Open LV               2
  Max PV                0
  Cur PV                1
  Act PV                1
  VG Size               74.41 GB
  PE Size               32.00 MB
  Total PE              2381
  Alloc PE / Size       2381 / 74.41 GB
  Free  PE / Size       0 / 0
  VG UUID               YHLmkq-b1xS-UzAS-Y3nv-6vaX-2Xou-GScvk0
  [root@locallhost ~]# vgs -v
  Finding all volume groups
  Finding volume group "VolGroup00"
  Archiving volume group "VolGroup00" metadata (seqno 3).
  Archiving volume group "VolGroup00" metadata (seqno 3).
  Creating volume group backup "/etc/lvm/backup/VolGroup00" (seqno 3).
  Finding volume group "VolGroup00"
  Archiving volume group "VolGroup00" metadata (seqno 3).
  Archiving volume group "VolGroup00" metadata (seqno 3).
  Creating volume group backup "/etc/lvm/backup/VolGroup00" (seqno 3).
  VG         Attr   Ext    #PV #LV #SN VSize   VFree VG UUID
  VolGroup00 wz--n- 32.00M   1   2   0 232.78G    0  bAydq6-rv9e-wCa0-iK2f-zFWn-UBUr-4AR3Ct
  VolGroup00 wz--n- 32.00M   1   2   0  74.41G    0  YHLmkq-b1xS-UzAS-Y3nv-6vaX-2Xou-GScvk0
  查到数据盘的uuid是bAydq6-rv9e-wCa0-iK2f-zFWn-UBUr-4AR3Ct,改卷组名的时候用uuid,如下:
  [root@locallhost ~]# vgrename bAydq6-rv9e-wCa0-iK2f-zFWn-UBUr-4AR3Ct aaalvm    ##根据测试,这个命令可以在系统lvm卷已经挂载上去的时候运行。
  Volume group "VolGroup00" successfully renamed to "aaalvm"
  ok了,改完再vgs看下:
  [root@locallhost ~]# vgs
  VG         #PV #LV #SN Attr   VSize   VFree
  VolGroup00   1   2   0 wz--n-  74.41G    0
  aaalvm       1   2   0 wz--n- 232.78G    0
  没问题了,再lvscan下:
  [root@locallhost ~]# lvscan  ##好命令
  inactive          ‘/dev/aaalvm/LogVol00‘ [228.84 GB] inherit
  inactive          ‘/dev/aaalvm/LogVol01‘ [3.94 GB] inherit
  ACTIVE            ‘/dev/VolGroup00/LogVol00‘ [70.47 GB] inherit
  ACTIVE            ‘/dev/VolGroup00/LogVol01‘ [3.94 GB] inherit
  已经看到新改名的卷组是inactive了,2个分区LogVol00和LogVol01,用vgchange加载我们该名过的aaalvm卷组:
  [root@locallhost ~]# vgchange -ay /dev/aaalvm
  2 logical volume(s) in volume group "aaalvm" now active
  提示active状态成功,最后mount文件系统:
  [root@locallhost ~]# ls /dev/aaalvm/
  LogVol00  LogVol01
  [root@locallhost ~]# mount /dev/aaalvm/LogVol00 /aaaa/
  [root@locallhost ~]# df -h
  Filesystem            Size  Used Avail Use% Mounted on
  /dev/mapper/VolGroup00-LogVol00
  69G  2.7G   63G   5% /
  /dev/hda1              99M   12M   82M  13% /boot
  tmpfs                1010M     0 1010M   0% /dev/shm
  /dev/mapper/aaalvm-LogVol00
  222G  111G  100G  53% /aaaa
  [root@locallhost ~]# mount /dev/aaalvm/LogVol01 /bbb/
  /dev/aaalvm/LogVol01 looks like swapspace - not mounted
  mount: you must specify the filesystem type
  LogVol01是swap分区,不用挂载。把/bin/mount /dev/aaalvm/LogVol00 /aaaa/写入rc.local里面,让每次开机自动挂载,也可以写到fstab里面,但是如果写错出问题可能导致进不了系统,所以建议写rc.local。

 

Linux下挂载LVM遇到卷组同名的解决方法