centos下挂载其他lvm


在Cent OS6里试图挂载另外一块硬盘，其中的一个分区是LVM格式的，不能直接mount,方法记录如下，以备不时之需。

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