linux下卷组管理 - Linux系统

[root@rac1 work]# fdisk -l

Disk /dev/sda: 21.4 GB, 21474836480 bytes

255 heads, 63 sectors/track, 2610 cylinders

Units = cylinders of 16065 * 512 = 8225280 bytes

  Device Boot      Start         End      Blocks   Id  System

/dev/sda1   *           1          13      104391   83  Linux

/dev/sda2              14        2610    20860402+  8e  Linux LVM

Disk /dev/sdb: 536 MB, 536870912 bytes

64 heads, 32 sectors/track, 512 cylinders

Units = cylinders of 2048 * 512 = 1048576 bytes

Disk /dev/sdb doesn't contain a valid partition table

Disk /dev/sdc: 536 MB, 536870912 bytes

64 heads, 32 sectors/track, 512 cylinders

Units = cylinders of 2048 * 512 = 1048576 bytes

Disk /dev/sdc doesn't contain a valid partition table

2、使用pvcreate创建PV物理分区（可以pvcreate /dev/sdb /dev/sdd同时创建多个PV）

[root@rac1 work]# pvcreate /dev/sdd

 Physical volume "/dev/sdd" successfully created

3、PV创建成功，可以是用pvscan和pvdisplay进行查询当前PV状况

[root@rac1 work]# pvscan

 PV /dev/sdb    VG vg01         lvm2 [508.00 MB / 8.00 MB free]

 PV /dev/sdc    VG vg01         lvm2 [508.00 MB / 508.00 MB free]

 PV /dev/sdd    VG vg01         lvm2 [508.00 MB / 508.00 MB free]

 PV /dev/sda2   VG VolGroup00   lvm2 [19.88 GB / 0    free]

 PV /dev/sde                    lvm2 [512.00 MB]

 PV /dev/sdf                    lvm2 [512.00 MB]

 Total: 6 [22.36 GB] / in use: 4 [21.36 GB] / in no VG: 2 [1.00 GB]

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