LVM（扩展）
========================
[root@aminglinux newdir]# fdisk -l /dev/sdb
磁盘 /dev/sdb：10.7 GB, 10737418240 字节，20971520 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节
磁盘标签类型：dos
磁盘标识符：0x3326d135
设备 Boot Start End Blocks Id System
/dev/sdb1 2048 2099199 1048576 83 Linux
/dev/sdb2 2099200 4196351 1048576 83 Linux
/dev/sdb3 4196352 6293503 1048576 83 Linux
[root@aminglinux newdir]# fdisk -l /dev/sdb
磁盘 /dev/sdb：10.7 GB, 10737418240 字节，20971520 个扇区
Units = 扇区 of 1 * 512 = 512 bytes
扇区大小(逻辑/物理)：512 字节 / 512 字节
I/O 大小(最小/最佳)：512 字节 / 512 字节
磁盘标签类型：dos
磁盘标识符：0x3326d135
设备 Boot Start End Blocks Id System
/dev/sdb1 2048 2099199 1048576 8e Linux LVM
/dev/sdb2 2099200 4196351 1048576 8e Linux LVM
/dev/sdb3 4196352 6293503 1048576 8e Linux LVM
[root@aminglinux newdir]# partprobe
[root@aminglinux ~]# pvcreate /dev/sdb1
Physical volume "/dev/sdb1" successfully created.
[root@aminglinux ~]# pvcreate /dev/sdb2
Physical volume "/dev/sdb2" successfully created.
[root@aminglinux ~]# pvs
PV VG Fmt Attr PSize PFree
/dev/sdb1 vg1 lvm2 a-- 1020.00m 1020.00m
/dev/sdb2 vg1 lvm2 a-- 1020.00m 1020.00m
/dev/sdb3 lvm2 --- 1.00g 1.00g
[root@aminglinux ~]# vgcreate vg1 /dev/sdb1 /dev/sdb2
Volume group "vg1" successfully created
[root@aminglinux ~]# vgs
VG #PV #LV #SN Attr VSize VFree
vg1 2 0 0 wz--n- 1.99g 1.99g
[root@aminglinux ~]# lvcreate -L 100M -n lv1 vg1
Logical volume "lv1" created.
[root@aminglinux ~]# mkfs.xfs /dev/vg1/lv1
[root@aminglinux /]# mount /dev/vg1/lv1 /newdev
[root@aminglinux /]# df -h |grep -v tmpfs
文件系统 容量 已用 可用 已用% 挂载点
/dev/sda3 17G 1.4G 15G 9% /
/dev/sda1 197M 94M 104M 48% /boot
/dev/mapper/vg1-lv1 97M 5.2M 92M 6% /newdev
[root@aminglinux /]# lvresize -L 300M /dev/vg1/lv1
Size of logical volume vg1/lv1 changed from 100.00 MiB (25 extents) to 300.00 MiB (75 extents).
Logical volume vg1/lv1 successfully resized.
[root@aminglinux /]# xfs_growfs /dev/vg1/lv1
meta-data=/dev/mapper/vg1-lv1 isize=512 agcount=4, agsize=6400 blks
= sectsz=512 attr=2, projid32bit=1
= crc=1 finobt=0 spinodes=0
data = bsize=4096 blocks=25600, imaxpct=25
= sunit=0 swidth=0 blks
naming =version 2 bsize=4096 ascii-ci=0 ftype=1
log =internal bsize=4096 blocks=855, version=2
= sectsz=512 sunit=0 blks, lazy-count=1
realtime =none extsz=4096 blocks=0, rtextents=0
data blocks changed from 25600 to 76800
[root@aminglinux /]# df -h |grep -v tmpfs
文件系统 容量 已用 可用 已用% 挂载点
/dev/sda3 17G 1.4G 15G 9% /
/dev/sda1 197M 94M 104M 48% /boot
/dev/mapper/vg1-lv1 297M 5.5M 292M 2% /newdev
[root@aminglinux ~]# pvcreate /dev/sdb3
Physical volume "/dev/sdb3" successfully created.
[root@aminglinux /]# vgextend vg1 /dev/sdb3
Volume group "vg1" successfully extended
[root@aminglinux /]# vgs
VG #PV #LV #SN Attr VSize VFree
vg1 3 1 0 wz--n- <2.99g <2.70g