Ubuntu创建lvm

 

# fdisk -l
Disk /dev/vdb: 8796.1 GB, 8796093022208 byte

 

# pvcreate /dev/vdb
  Physical volume "/dev/vdb" successfully created
# vgcreate data_vga1 /dev/vdb
  Volume group "data_vga1" successfully created
# lvcreate -L 8790G -n data_lv1 data_vga1
  Volume group "data_vga1" has insufficient free space (2097151 extents): 2250240 required.
#报错，区块错误，我们查看一下
# vgdisplay
PE Size               4.00 MiB
Free  PE / Size       2097151 / 8.00 TiB
#可以看到2097151X4= 8388604/1024=8191.996，我们可以这样
# lvcreate -L 8191G -n data_lv1 data_vga1或者
#lvcreate -l2097151 -n data_lv1 data_vga1
#lvs
  LV       VG        Attr      LSize  Pool Origin Data%  Move Log Copy%  Convert
  root     backup-vg -wi-ao--- 75.72g                                           
  swap_1   backup-vg -wi-ao---  4.00g                                           
  data_lv1 data_vga1 -wi-a----  8.00t  

格式化

# mkfs.ext4 /dev/data_vga1/data_lv1 
Writing superblocks and filesystem accounting information:            
done