2013-11-30

Lvm分区挂载

对LVM分区进行挂载，前提要能够被探测到，然后激活，再挂载。
1. 探测VolGroup
vgscan
2. 激活
vgchange -a y VolGroup00
3. 挂载
mount /dev/VolGroup00/LogVol01 /mnt/hdb2

1.首先使用vgscan 扫描 lvm 结果如下
zhq@zhq:/$ sudo vgscan
Reading all physical volumes. This may take a while…
Found volume group “VolGroup00” using metadata type lvm2
2.通过 vgdisplay VolGroup00 查看 lvm 的 VG UUID
zhq@zhq:/$ sudo vgdisplay VolGroup00
— 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               0
Max PV                0
Cur PV                1
Act PV                1
VG Size               19.62 GiB
PE Size               32.00 MiB
Total PE              628
Alloc PE / Size       628 / 19.62 GiB
Free PE / Size       0 / 0
VG UUID               xPw6Yb-1SYW-ayBT-TqOP-hF4i-w02x-vY0165
3.重命名（本人认为此步可省，可能是源于简洁吧，呵呵，没试，你可以试试，呵呵）
sudo vgrename VolGroup00 /dev/vg0
Volume group “VolGroup00” successfully renamed to “vg0”

这个时候通过 vgdisplay 就可以看到 VG的信息了
sudo vgdisplay
— Volume group —
VG Name               vg0
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               19.62 GiB
PE Size               32.00 MiB
Total PE              628
Alloc PE / Size       628 / 19.62 GiB
Free PE / Size       0 / 0
VG UUID               xPw6Yb-1SYW-ayBT-TqOP-hF4i-w02x-vY0165

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
sudo lvscan
ACTIVE ‘/dev/vg0/LogVol00’ [18.16 GiB] inherit
ACTIVE ‘/dev/vg0/LogVol01’ [1.47 GiB] inherit

激活 VG
sudo vgchange -ay /dev/vg0
2 logical volume(s) in volume group “vg0” now active

查看状态
sudo lvscan
/LogVol00’ [18.16 GiB] inherit
ACTIVE ‘/dev/vg0/LogVol01’ [1.47 GiB] inherit

sudo vgscan
Reading all physical volumes. This may take a while…
Found volume group “vg0” using metadata type lvm2