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回复 18# snow888
就是sdb不分区,直接pvcreate /dev/sdb,然后vgextend之类的,操作和我在1楼的一致,效果也一样.只不过我1楼需要写sdb1,现在写sdb而已.
这个是初始的sdb,没有任何分区.
[root@centos133 ~]# fdisk -l /dev/sdb
Disk /dev/sdb: 4294 MB, 4294967296 bytes
255 heads, 63 sectors/track, 522 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdb doesn't contain a valid partition table
做pv,没有对sdb进行分区.
[root@centos133 ~]# pvcreate /dev/sdb
Physical volume "/dev/sdb" successfully created
[root@centos133 ~]# fdisk -l /dev/sdb
Disk /dev/sdb: 4294 MB, 4294967296 bytes
255 heads, 63 sectors/track, 522 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Disk /dev/sdb doesn't contain a valid partition table
创建完pv,检查.
"/dev/sdb" is a new physical volume of "4.00 GB"
--- NEW Physical volume ---
PV Name /dev/sdb
VG Name
PV Size 4.00 GB
Allocatable NO
PE Size (KByte) 0
Total PE 0
Free PE 0
Allocated PE 0
PV UUID BzXfg4-BxSG-ZxEK-SNMX-5kod-2lTw-vV7Jv4
原来的vg
[root@centos133 ~]# vgdisplay
--- 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 19.88 GB
PE Size 32.00 MB
Total PE 636
Alloc PE / Size 636 / 19.88 GB
Free PE / Size 0 / 0
VG UUID JWA1Lv-mz3B-Jx9n-ZwSf-vjkh-etgV-ntBC5U
扩容vg
[root@centos133 ~]# vgextend VolGroup00 /dev/sdb
/dev/cdrom: open failed: Read-only file system
/dev/cdrom: open failed: Read-only file system
Volume group "VolGroup00" successfully extended
扩容后的vg
[root@centos133 ~]# vgdisplay
--- Volume group ---
VG Name VolGroup00
System ID
Format lvm2
Metadata Areas 2
Metadata Sequence No 4
VG Access read/write
VG Status resizable
MAX LV 0
Cur LV 2
Open LV 2
Max PV 0
Cur PV 2
Act PV 2
VG Size 23.84 GB
PE Size 32.00 MB
Total PE 763
Alloc PE / Size 636 / 19.88 GB
Free PE / Size 127 / 3.97 GB
VG UUID JWA1Lv-mz3B-Jx9n-ZwSf-vjkh-etgV-ntBC5U
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