Archive for 7 10 月, 2010

Linux下挂载lvm 并解决同名冲突

Linux下挂载lvm 并解决同名冲突
在Linux下使用新硬盘安装系统,安装好以后再挂载原来的硬盘,分区格式全为系统默认分区,系统默认使用的
是lvm格式,并且默认的卷都是 VolGroup00
使用 pvs 查看显示如下:
[root@localhost ~]# pvs
PV VG Fmt Attr PSize PFree
/dev/sda2 VolGroup00 lvm2 a- 136.62G 0
/dev/sdb2 VolGroup00 lvm2 a- 136.62G 0
发现可以正确认别到两个VG,但是同名,如何挂载呢?
解决办法是,将原来的VG更名,解决冲突即可挂载。
重命名格式为:[此时会提示:
[root@localhost ~]# vgrename VolGroup00 VolGroup01
Found more than one VG called VolGroup00. Please supply VG uuid.
原因是存在两个 VolGroup00,修改的方法他已经提示了要指定 VG uuid即可。
查看VG uuid的命令为:
[root@localhost ~]# vgs -v
Finding all volume groups
Finding volume group “VolGroup00”
Finding volume group “VolGroup00”
VG Attr Ext #PV #LV #SN VSize VFree VG UUID
VolGroup00 wz–n- 32.00M 1 2 0 136.62G 0 dcHa6G-abU2-Xfq8-EPBm-jBLj-sf18-O5uH0U
VolGroup00 wz–n- 32.00M 1 2 0 136.62G 0 OF8g7h-PQJB-9D9z-yPxn-1kfY-Advq-YbNHJ9
查到VG uuid以后,再次执行改名:
[root@localhost ~]# vgrename OF8g7h-PQJB-9D9z-yPxn-1kfY-Advq-YbNHJ9 VolGroup01
Volume group “VolGroup00” still has active LVs
修改成功以后,再执行:lvscan
[root@localhost ~]# lvscan
inactive ‘/dev/VolGroup01/LogVol00’ [130.84 GB] inherit
inactive ‘/dev/VolGroup01/LogVol01’ [5.78 GB] inherit
ACTIVE ‘/dev/VolGroup00/LogVol00’ [130.84 GB] inherit
ACTIVE ‘/dev/VolGroup00/LogVol01’ [5.78 GB] inherit
可以看到新修改的VolGroup01是inactive状态。
再使用vgchange 加载 VolGroup01
[root@localhost ~]# vgchange -ay /dev/VolGroup01
2 logical volume(s) in volume group “VolGroup01” now active
最后 mount 就可以
[root@localhost ~]# mount /dev/VolGroup01/LogVol00 /mnt/old
至此,全部完成。
Linux下挂载lvm 并解决同名冲突

Comments (1)

mount挂载硬盘出错mount you must specify the filesystem type lvm?

[root@all /]# fdisk -l
Disk /dev/hdc: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/hdc1 * 1 13 104391 83 Linux
/dev/hdc2 14 9729 78043770 8e Linux LVM

Disk /dev/hda: 40.0 GB, 40020664320 bytes
255 heads, 63 sectors/track, 4865 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/hda1 * 1 255 2048256 83 Linux
/dev/hda2 256 3934 29551567+ 83 Linux
/dev/hda3 3935 4444 4096575 83 Linux
/dev/hda4 4445 4865 3381682+ f Win95 Ext’d (LBA)
/dev/hda5 4445 4699 2048256 83 Linux
/dev/hda6 4700 4801 819283+ 83 Linux
/dev/hda7 4802 4865 514048+ 82 Linux swap
[root@all /]# mount /dev/hdc2 /mnt/cdrom
mount: you must specify the filesystem type
mount 时出线上面的错误!谁给点提示!谢谢!

回答:

1.先用vgscan
2.vgchange -ay
3.lvscan
4.mount

到第三步的时候如果正常会显示出两块硬盘的lv状态都是active,此时再

#mount -t ext3 /dev/VGname/LVname /mnt/cdrom

就可以成功了。

本文来自CSDN博客,转载请标明出处:http://blog.csdn.net/qiudakun/archive/2010/03/01/5336754.aspx

评论