CentOS——磁盘分区
<p><span style="font-size: 14pt"><strong>Centos7-磁盘分区</strong></span><br>磁盘层次结构–磁盘分区方法<br>情况一:磁盘分区–磁盘小于2T fdisk<br>情况二:磁盘分区–磁盘大于2T centos6:parted centos7:fdisk</p><p><span style="font-size: 18px"><strong>一、磁盘小于2T情况，fdisk分区</strong></span><br>1、查看系统磁盘情况，是否能够扫到新添磁盘<br>lsblk 或者 fdisk -l<br>如下图标记，可以看到一块100G新加磁盘，盘符sdc</p>
<p><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309142632967-896076141.png" alt="" loading="lazy"></p>
<p> </p>
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<p>2、开始划分区<br>fdisk /dev/sdx 根据实际情况选择盘符</p>
<p><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309142600985-1753234857.png" alt="" loading="lazy"></p>
<p> </p>
<p>3、打印分区表，查看分区情况</p>
<p>可以看到，标记处无任何分区信息</p>
<p><em><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309142649260-1114495065.png" alt="" loading="lazy"></em></p>
<p> </p>
<p>4、创建分区</p>
<p><em><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309142659769-1097697543.png" alt="" loading="lazy"></em></p>
<p>5、再次查看分区表</p>
<p><em><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309142707714-99785748.png" alt="" loading="lazy"></em></p>
<p>6、确认正确保存退出</p>
<p><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309142717855-755071111.png" alt="" loading="lazy"></p>
<p>7、手动使系统重新扫描系统分区<br># partprobe /dev/sdc</p>
<p>8、再次查看系统磁盘情况<br>可以看到sdc磁盘第一个分区，sdc1 ，磁盘类型part主分区</p>
<p><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309142730904-331449097.png" alt="" loading="lazy"></p>
<p>9、进行磁盘格式划，此处选择xfs格式（目前最好的分区格式，centos 7默认格式）<br>mkfs.xfs /dev/sdc1</p>
<p><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309142741611-1711358979.png" alt="" loading="lazy"></p>
<p>10、创建挂载点，挂载磁盘。<br>此处在根目录下创建了一个文件夹xiaobai_100G<br>挂载磁盘 mount</p>
<p><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309142754105-410620963.png" alt="" loading="lazy"></p>
<p>11、查看磁盘挂载情况<br>df -Th<br>此时，已经可以进入目录创建文件了。磁盘类型为 xfs 格式</p>
<p><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309142801466-1164371533.png" alt="" loading="lazy"></p>
<p>12、设置开机自动挂载磁盘<br>查看磁盘的UUID blkid /dev/sdc1 复制UUID信息。</p>
<p><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309142823366-639283289.png" alt="" loading="lazy"></p>
<p>vi /etc/fstab 编辑此文件<br>格式：<br>UUID/磁盘路径 挂载点 磁盘类型 defaults 0 0</p>
<p><em><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309142832696-25516841.png" alt="" loading="lazy"></em></p>
<p> </p>
<p> 13、检查挂载信息是否正确，正确不输出信息</p>
<p>mount -a<br>此信息提示我们的磁盘类型语法错误，需要修改为xfs。如果书写错误，下次重启会无法开机，需进单用户模式修改。</p>
<p><em><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309142848547-2115943073.png" alt="" loading="lazy"></em></p>
<p>14、分区挂载完成。</p>
<p><strong><span style="font-size: 18px">二、磁盘大于2T情况（本文以centos7支持的fdisk gtp分区演示，parted分区不做介绍）</span></strong><br>1、查看系统磁盘情况，是否能够扫到新添磁盘<br>lsblk 或者 fdisk -l<br>如下图标记，可以看到一块3T新加磁盘，盘符sdb</p>
<p><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309142906353-276499083.png" alt="" loading="lazy"></p>
<p> </p>
<p> 2、开始划分区</p>
<p>fdisk /dev/sdx 根据实际情况选择盘符</p>
<p><em><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309142915274-903235140.png" alt="" loading="lazy"></em></p>
<p> </p>
<p>3、打印分区表，查看分区情况</p>
<p>可以看到，标记处无任何分区信息</p>
<p><em><em><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309142924980-1672575907.png" alt="" loading="lazy"></em></em></p>
<p> </p>
<p> <em id="__mceDel"><em id="__mceDel"><em id="__mceDel">4、修改分区表为gpt类型</em></em></em></p>
<p><em><em><em><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309142934497-1951641786.png" alt="" loading="lazy"></em></em></em></p>
<p> </p>
<p> <em id="__mceDel"><em id="__mceDel"><em id="__mceDel"><em id="__mceDel">5、创建新分区</em></em></em></em></p>
<p><em id="__mceDel"><em id="__mceDel"><em id="__mceDel"><em id="__mceDel">此处给第一个分区，分配所有空间。gpt无主分区、扩展分区概念。</em></em></em></em></p>
<p><em><em><em><em><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309142949084-68525123.png" alt="" loading="lazy"></em></em></em></em></p>
<p> </p>
<p><em id="__mceDel"><em id="__mceDel"><em id="__mceDel"><em id="__mceDel"><em id="__mceDel">6、再次打印查看分区情况</em></em></em></em></em></p>
<p><em><em><em><em><em><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309143000488-74803161.png" alt="" loading="lazy"></em></em></em></em></em></p>
<p> </p>
<p><em id="__mceDel"><em id="__mceDel"><em id="__mceDel"><em id="__mceDel"><em id="__mceDel"><em id="__mceDel">7、保存退出</em></em></em></em></em></em></p>
<p><em><em><em><em><em><em><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309143012234-316544772.png" alt="" loading="lazy"></em></em></em></em></em></em></p>
<p>8、重新检查系统分区情况<br># partprobe /dev/sdb</p>
<p>9、再次查看系统分区情况</p>
<p><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309143021297-1661047248.png" alt="" loading="lazy"></p>
<p> </p>
<p> <em id="__mceDel">10、格式化磁盘</em></p>
<p><em><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309143029099-1964283385.png" alt="" loading="lazy"></em></p>
<p> </p>
<p><em id="__mceDel">11、创建挂载点，挂载磁盘</em></p>
<p><em id="__mceDel"># mkdir /xiaobai_3T<br># mount /dev/sdb1 /xiaobai_3T</em></p>
<p>12、查看挂载情况</p>
<p><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309143039268-1958807281.png" alt="" loading="lazy"></p>
<p>13、设置开机自动挂载磁盘<br>vi /etc/fstab 编辑开机自启文件</p>
<p>查看磁盘UUID信息<br>blkid</p>
<p><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309143047295-1617816194.png" alt="" loading="lazy"></p>
<p><img src="https://img2022.cnblogs.com/blog/1075026/202203/1075026-20220309143056342-706582478.png" alt="" loading="lazy"></p>
<p> </p>
<p> <em id="__mceDel">14、检查编写配置文件</em></p>
<p><em id="__mceDel"># mount -a</em></p>
<p>15、磁盘分区完成。<br><br></p><br><br>
来源：https://www.cnblogs.com/funcquery/p/15985022.html
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