原有Linux系统坏掉后挂载该硬盘到新的系统遇到LVM分区无法正常mount的解决方案-Centos64系统

原来的硬盘是LVM分区的话,那么第一个分区必须是Boot分区

如果 mount /dev/xvdc2 的话 会出现错误提示

mount: wrong fs type, bad option, bad superblock on /dev/xvdc2,

missing codepage or other error

In some cases useful info is found in syslog – try

dmesg | tail or so

意思就是这个/dev/xvdc2 不是普通分区应该通过lvm挂载

我现在lvdispaly出来的是 /dev/VolGroup0064/LogVol0
那么 意思 我当前已经挂载好的 /dev/VolGroup0064/
然后 lvscan 出来 有个 dev/vg_501153278/lv_root
说明 这个  dev/vg_501153278/lv_root 需要被挂载

然后 需要 vgchange

将刚才的dev/vg_501153278/添加进逻辑组

最后 vgscan 到 vg已经被添加

就可以平常的 mount方式 挂载硬盘

 

***********参考资料*************

1.首先使用vgscan 扫描 lvm 结果如下
[root@localhost ~]# vgscan
Reading all physical volumes. This may take a while…
WARNING: Duplicate VG name VolGroup00: Existing bgKw70-NEBI-QY6s-RvqU-3a59-N8E1-ruOWwh (created here) takes precedence over 1WnXRG-M0t1-z1A6-rppv-lltN-oDQB-IDonTM
WARNING: Duplicate VG name VolGroup00: Existing bgKw70-NEBI-QY6s-RvqU-3a59-N8E1-ruOWwh (created here) takes precedence over 1WnXRG-M0t1-z1A6-rppv-lltN-oDQB-IDonTM
WARNING: Duplicate VG name VolGroup00: Existing 1WnXRG-M0t1-z1A6-rppv-lltN-oDQB-IDonTM (created here) takes precedence over bgKw70-NEBI-QY6s-RvqU-3a59-N8E1-ruOWwh
Found volume group “VolGroup00〃 using metadata type lvm2
WARNING: Duplicate VG name VolGroup00: Existing bgKw70-NEBI-QY6s-RvqU-3a59-N8E1-ruOWwh (created here) takes precedence over 1WnXRG-M0t1-z1A6-rppv-lltN-oDQB-IDonTM
Found volume group “VolGroup00〃 using metadata type lvm2

2.通过 vgdisplay VolGroup00 查看 lvm 的 VG UUID
[root@localhost ~]# vgdisplay VolGroup00
WARNING: Duplicate VG name VolGroup00: Existing bgKw70-NEBI-QY6s-RvqU-3a59-N8E1-ruOWwh (created here) takes precedence over 1WnXRG-M0t1-z1A6-rppv-lltN-oDQB-IDonTM
— 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               129.31 GB
PE Size               32.00 MB
Total PE              4138
Alloc PE / Size       4137 / 129.28 GB
Free PE / Size       1 / 32.00 MB
VG UUID               bgKw70-NEBI-QY6s-RvqU-3a59-N8E1-ruOWwh
可以看出当前操作系统使用的VolGroup00的 VG UUID 是 bgKw70-NEBI-QY6s-RvqU-3a59-N8E1-ruOWwh
说明 1WnXRG-M0t1-z1A6-rppv-lltN-oDQB-IDonTM 这个VG UUID 是要另一块硬盘的lvm 分区

3.将第二块硬盘的VG的名字重命名
[root@localhost ~]# vgrename 1WnXRG-M0t1-z1A6-rppv-lltN-oDQB-IDonTM /dev/vg01
WARNING: Duplicate VG name VolGroup00: Existing bgKw70-NEBI-QY6s-RvqU-3a59-N8E1-ruOWwh (created here) takes precedence over 1WnXRG-M0t1-z1A6-rppv-lltN-oDQB-IDonTM
WARNING: Duplicate VG name VolGroup00: Existing bgKw70-NEBI-QY6s-RvqU-3a59-N8E1-ruOWwh (created here) takes precedence over 1WnXRG-M0t1-z1A6-rppv-lltN-oDQB-IDonTM
WARNING: Duplicate VG name VolGroup00: Existing 1WnXRG-M0t1-z1A6-rppv-lltN-oDQB-IDonTM (created here) takes precedence over bgKw70-NEBI-QY6s-RvqU-3a59-N8E1-ruOWwh
Volume group “VolGroup00〃 successfully renamed to “vg01〃
这个时候通过 vgdisplay 就可以看到 VG的信息了
[root@localhost ~]# vgdisplay
— Volume group —
VG Name               vg01
System ID
Format                lvm2
Metadata Areas        1
Metadata Sequence No 4
VG Access             read/write
VG Status             resizable
MAX LV                0
Cur LV                2
Open LV               0
Max PV                0
Cur PV                1
Act PV                1
VG Size               34.50 GB
PE Size               32.00 MB
Total PE              1104
Alloc PE / Size       1103 / 34.47 GB
Free PE / Size       1 / 32.00 MB
VG UUID               1WnXRG-M0t1-z1A6-rppv-lltN-oDQB-IDonTM
— 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               129.31 GB
PE Size               32.00 MB
Total PE              4138
Alloc PE / Size       4137 / 129.28 GB
Free PE / Size       1 / 32.00 MB
VG UUID               bgKw70-NEBI-QY6s-RvqU-3a59-N8E1-ruOWwh

4.激活VG
VG重命名后,默认是非ACTIVE状态,我们要通过以下方式激活VG
[root@localhost ~]# lvscan
inactive          ‘/dev/vg01/LogVol00′ [31.50 GB] inherit
inactive          ‘/dev/vg01/LogVol01′ [2.97 GB] inherit
ACTIVE            ‘/dev/VolGroup00/LogVol00′ [125.41 GB] inherit
ACTIVE            ‘/dev/VolGroup00/LogVol01′ [3.88 GB] inherit
激活 VG
[root@localhost ~]# vgchange -ay /dev/vg01
2 logical volume(s) in volume group “vg01〃 now active
查看状态
[root@localhost ~]# lvscan
ACTIVE            ‘/dev/vg01/LogVol00′ [31.50 GB] inherit
ACTIVE            ‘/dev/vg01/LogVol01′ [2.97 GB] inherit
ACTIVE            ‘/dev/VolGroup00/LogVol00′ [125.41 GB] inherit
ACTIVE            ‘/dev/VolGroup00/LogVol01′ [3.88 GB] inherit
[root@localhost ~]# vgscan
Reading all physical volumes. This may take a while…
Found volume group “vg01〃 using metadata type lvm2
Found volume group “VolGroup00〃 using metadata type lvm2
到此为止,可以挂载系统了!

5.挂载lvm文件系统
[root@localhost mnt]# mount /dev/vg01 /mnt/sdb3
就可以访问了