LVM可以配合RAID方便灵活调正分区的大小。虚拟机简单试了下还是很方便1. 创建一个RAID5mdadm –create /dev/md1 –run –level=5 -n 3 /dev/sdc /dev/sdb /dev/sda
2.创建LVM2.1 初始物理卷create pvpvcreate /dev/md0pvdisplay /dev/md1
2.2 创建卷组vgcreate raidlvm /dev/md1vgchange -a y raidlvmvgdisplay raidlvm2.3 创建逻辑卷lvcreate -L1G -nusrfs raidlvmlvcreate -L1000M -nrootfs raidlvmlvdisplay /dev/raidlvm/rootfslvdisplay /dev/raidlvm/usrfsmkfs.ext4 /dev/raidlvm/usrfs2.4 调整卷大小umountlvextend -L+1Gsize2fs /dev/mapper/raidlvm-rootfseize2fs /dev/mapper/raidlvm-rootfsresize2fs /dev/mapper/raidlvm-rootfsmount -a