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  • LVM

    [root@localhost ~]# ls -l /dev/sd*
    [root@localhost ~]# pvcreate /dev/sdb
    [root@localhost ~]# pvcreate /dev/sdc
    [root@localhost ~]# vgcreate xiaoguo /dev/sdb /dev/sdc
    [root@localhost ~]# lvcreate -n haha -l 100 xiaoguo
    [root@localhost ~]# mkfs.ext4 /dev/xiaoguo/haha
    [root@localhost ~]# mkdir /haha
    [root@localhost ~]# mount /dev/xiaoguo/haha /haha/
    [root@localhost ~]# vim /etc/fstab
    [root@localhost ~]# df -h

    扩容:

    [root@localhost ~]# umount /haha
    [root@localhost ~]# lvextend -L 800M /dev/xiaoguo/haha
    [root@localhost ~]# e2fsck -f /dev/xiaoguo/haha
    [root@localhost ~]# resize2fs /dev/xiaoguo/haha
    [root@localhost ~]# mount -a
    [root@localhost ~]# df –h

    缩容:

    [root@localhost ~]# umount /haha
    [root@localhost ~]# e2fsck -f /dev/xiaoguo/haha
    [root@localhost ~]# resize2fs /dev/xiaoguo/haha 300M
    [root@localhost ~]# lvreduce -L 300M /dev/xiaoguo/haha
    [root@localhost ~]# mount -a
    [root@localhost ~]# df –h

    快照:

    [root@localhost ~]# cd /haha/
    [root@localhost haha]# cp -rf /etc/* ./
    [root@localhost haha]# ls
    [root@localhost haha]# lvcreate -L 300M -s -n SNAP /dev/xiaoguo/haha
    [root@localhost haha]# lvdisplay
    [root@localhost haha]# ls
    [root@localhost haha]# rm -rf *
    [root@localhost haha]# ls
    [root@localhost haha]# cd ~
    [root@localhost ~]# umount /haha
    [root@localhost ~]# lvconvert --merge /dev/xiaoguo/SNAP
    [root@localhost ~]# mount -a
    [root@localhost ~]# ls

    删除:

    [root@localhost ~]# umount /haha
    [root@localhost ~]# vim /etc/fstab
    [root@localhost ~]# lvremove /dev/xiaoguo/haha
    [root@localhost ~]# vgremove xiaoguo
    [root@localhost ~]# pvremove /dev/sdb
    [root@localhost ~]# pvremove /dev/sdc
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  • 原文地址:https://www.cnblogs.com/dinghailong128/p/12178405.html
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