用于扩展LVM卷并调整文件系统大小的脚本

Question

在我的服务器上，我不得不不时地扩展lvm卷以腾出更多空间。为此，我使用命令lvextend和resize2fs。我想要一个命令，该命令将向我显示LVM卷的列表以供选择并要求增加大小。

Answer 1

我最终编写并用于在线调整大小的脚本是：

#!/bin/bash
# 2020-04-11 Initial Version

function error()
{
   echo "*** $*"
   exit 1
}

if [ "$1" == "" ] ; then
    echo "Please select the partition from the list"

    i=1
    for j in /dev/mapper/kalypso*
    do
        echo "$i.$j"
        file[i]=$j
        i=$(( i + 1 ))
    done

    echo "Enter number"
    read input
    partition=${file[$input]}
    echo "You selected partition $partition"

    df -h $partition
    echo "Enter size to add, to $partition e.g. 50G:"
    read size
    echo "You choose to increase file $partition by $size"
    sudo lvextend -L +$size $partition || error "lvextend $partition failed"
    sudo resize2fs $partition || error "resize2fs $partition failed"
    echo "lvextend/resize2fs completed"
    df -h $partition | tail -n 1
fi