扩容云硬盘

<p class="shortdesc">本文介绍云硬盘扩容以及扩容的注意事项。</p> <section class="section" id="Expand__section_t3m_gzy_svb"><h2 class="doc-tairway">注意事项</h2> <ol class="ol" id="Expand__ol_qmk_3zy_svb"> <li class="li">只有数据盘才能扩容,数据盘扩容同样受配额限制。</li> <li class="li">如果数据盘正在创建快照,禁止扩容数据盘操作。</li> <li class="li">扩容只是扩大数据盘的容量,而不是扩大硬盘分区容量。</li> <li class="li">只能扩容,不能缩容。例如,用户有一块数据盘,大小20G。用户在t1时间创建了一个快照,t2时该数据盘扩容到40G。用户使用回滚磁盘功能,恢复到t1状态的数据,但数据盘大小仍然是40G,按照40G计费。</li> </ol> </section> <section class="section" id="Expand__section_igk_jzy_svb"><h2 class="doc-tairway">扩容操作</h2> <p class="p"><strong class="ph b">方法一</strong></p> <ol class="ol" id="Expand__ol_lnq_lzy_svb"> <li class="li">登录<a class="xref" href="https://www.ocftcloud.com/console/ecs/overview" target="_blank" rel="external noopener">云服务器ECS控制台</a>。</li> <li class="li">单击左侧导航栏<span class="ph uicontrol">实例</span>,进入<span class="ph uicontrol">实例管理</span>页面。</li> <li class="li">选择目标地域,单击目标实例名称,进入<span class="ph uicontrol">实例详情</span>页面。</li> <li class="li">在<span class="ph uicontrol">云硬盘</span>页签,单击目标云硬盘操作列的<span class="ph uicontrol">磁盘扩容</span>。</li> <li class="li">进入<span class="ph uicontrol">磁盘扩容</span>页面,输入扩容后容量。</li> <li class="li">单击<span class="ph uicontrol">确认</span>,进入<span class="ph uicontrol">订单确认</span>页面。</li> <li class="li">单击<span class="ph uicontrol">确认升配</span>,进入<span class="ph uicontrol">支付结果</span>页面。</li> </ol> <div class="p"> <div class="note note note_note" id="Expand__note_qxg_rzy_svb"><span class="note__title">说明:</span> 注意这里的扩容只是硬盘容量的扩容,不是分区的扩容,分区扩容需要进到OS系统操作。</div> </div> <p class="p"><strong class="ph b">方法二</strong></p> <ol class="ol" id="Expand__ol_xdj_szy_svb"> <li class="li">登录<a class="xref" href="https://www.ocftcloud.com/console/ecs/overview" target="_blank" rel="external noopener">云服务器ECS控制台</a>。</li> <li class="li">单击左侧导航栏<span class="ph menucascade"><span class="ph uicontrol">存储</span><abbr> > </abbr><span class="ph uicontrol">云硬盘</span></span>,进入<span class="ph uicontrol">磁盘管理</span>页面。</li> <li class="li">选择目标地域,单击目标云硬盘操作列的<span class="ph uicontrol">︙</span>。</li> <li class="li">单击<span class="ph uicontrol">磁盘扩容</span>,弹出<span class="ph uicontrol">磁盘扩容</span>对话框。</li> <li class="li">输入扩容后容量,单击<span class="ph uicontrol">确认</span>。</li> <li class="li">进入<span class="ph uicontrol">订单确认</span>页面,单击<span class="ph uicontrol">确认升配</span>。</li> <li class="li">进入<span class="ph uicontrol">支付结果</span>页面。</li> </ol> <div class="p"> <div class="note note note_note" id="Expand__note_vft_l1z_svb"><span class="note__title">说明:</span> 注意这里的扩容只是云硬盘容量的扩容,不是分区的扩容,分区扩容需要进到OS系统操作。</div> </div> </section> <section class="section" id="Expand__section_ey5_m1z_svb"><h2 class="doc-tairway">Windows系统扩容数据盘</h2> <p class="p">在控制台对云硬盘扩容之后,操作系统的分区并未扩容,需要您手动扩容,本示例是在Windows Server2012R2 64bit操作系统下执行,数据盘从20G扩容到30G。</p> <p class="p"><strong class="ph b">注意事项</strong></p> <ol class="ol" id="Expand__ol_cdf_1bz_svb"> <li class="li">云硬盘正在创建快照时,不允许进行扩容操作。</li> <li class="li">包月云磁盘无法进行扩容操作。</li> <li class="li">磁盘扩容只能扩容数据盘,不能对系统盘进行扩容。</li> </ol> <p class="p"><strong class="ph b">前提条件</strong></p> <p class="p">已将数据盘扩容成功,可参考扩容云硬盘。</p> <p class="p"><strong class="ph b">操作步骤</strong></p> <ol class="ol" id="Expand__ol_tb1_dbz_svb"> <li class="li"> <p class="p"><a class="xref" href="/ssr/help/compute/ecs/manual.Instance_Manage.Login_Windows_Instance.Console_Remote_Login" target="_blank" rel="external noopener">登录Windows实例</a>。</p> </li> <li class="li"> <p class="p">在Windows 桌面,右键单击开始图标,单击<span class="ph uicontrol">磁盘管理(K)</span>,进入<span class="ph uicontrol">磁盘管理</span>页面。</p> <p class="p"><img class="image" id="Expand__image_mrj_gbz_svb" src="https://obs-cn-shanghai.fincloud.pinganyun.com/pacloud/20232006152128-12104fe39d56.png"></p> </li> <li class="li"> <p class="p">单击菜单栏<span class="ph menucascade"><span class="ph uicontrol">操作</span><abbr> > </abbr><span class="ph uicontrol">刷新或操作</span><abbr> > </abbr><span class="ph uicontrol">重新扫描磁盘</span></span>。</p> </li> <li class="li"> <p class="p">刷新或扫描完成后,查看数据盘是否已经变为扩容后的大小。本例中数据盘从20G扩容到30G,磁盘1是扩容的数据盘。</p> <p class="p"><img class="image" id="Expand__image_xph_4bz_svb" src="https://obs-cn-shanghai.fincloud.pinganyun.com/pacloud/20232006152128-1d56e14e99fa.png"></p> </li> <li class="li"> <p class="p">右键单击磁盘1主分区的空白区域,单击<span class="ph uicontrol">扩容卷</span>。</p> <p class="p"><img class="image" id="Expand__image_kfc_rbz_svb" src="https://obs-cn-shanghai.fincloud.pinganyun.com/pacloud/20232006152128-10855e6a98c4.png"></p> </li> <li class="li"> <p class="p">进入<span class="ph uicontrol">扩展卷向导</span>页面,默认选项即可,单击<span class="ph uicontrol">下一步</span>。</p> <p class="p"><img class="image" id="Expand__image_qb2_vbz_svb" src="https://obs-cn-shanghai.fincloud.pinganyun.com/pacloud/20232006152128-184935f39e83.png"></p> </li> <li class="li"> <p class="p">操作完成后,可以看到E盘扩容为30G。</p> <p class="p"><img class="image" id="Expand__image_lbl_xbz_svb" src="https://obs-cn-shanghai.fincloud.pinganyun.com/pacloud/20232006152128-19162c779909.png"></p> </li> </ol> </section> <section class="section" id="Expand__section_tdc_ybz_svb"><h2 class="doc-tairway">Linux系统扩容数据盘</h2> <p class="p">在控制台对云硬盘扩容之后,操作系统的分区并未扩容,需要您手动扩容。本实例为Linux 操作系统,版本为CentOS7.2_64bit,已经挂载一块数据盘。扩容前的数据盘只有一个主分区(/dev/vdb1),ext3文件系统,挂载点/test,扩容前40G,扩容后50G,扩容完成后数据盘仍只有一个主分区。</p> <p class="p"><strong class="ph b">注意事项</strong></p> <ol class="ol" id="Expand__ol_yks_zbz_svb"> <li class="li"> <p class="p">云硬盘正在创建快照时,不允许进行扩容操作。</p> </li> <li class="li"> <p class="p">包月云磁盘无法进行扩容操作。</p> </li> <li class="li"> <p class="p">扩容只是扩容数据盘的容量,不是扩大文件系统容量。</p> </li> <li class="li"> <p class="p">磁盘扩容只能扩容数据盘,不能对系统盘进行扩容。</p> </li> </ol> </section> <section class="section" id="Expand__section_yxj_1cz_svb"><h2 class="doc-tairway">扩容已有分区</h2> <ol class="ol" id="Expand__ol_orn_bcz_svb"> <li class="li"> <a class="xref" href="https://www.ocftcloud.com/ssr/help/compute/ecs/Quick_Start.Linux_Quick_Start.Login_Instance" target="_blank" rel="external noopener">登录linux实例</a>。</li> <li class="li">输入 df –h查看分区挂载目录。<p class="p"><img class="image" id="Expand__image_qzp_dcz_svb" src="https://obs-cn-shanghai.fincloud.pinganyun.com/pacloud/20232006152128-12fec5829533.png"></p></li> <li class="li">卸载分区umount /dev/vdb1。</li> <li class="li">删除原来的分区并创建新分区,fdisk /dev/vdb。<ol class="ol" type="a" id="Expand__ol_mff_gcz_svb"> <li class="li">输入 d 键,然后回车,删除已有的分区。<div class="p"> <div class="note note note_note" id="Expand__note_ypm_hcz_svb"><span class="note__title">说明:</span> <ul class="ul" id="Expand__ul_p2t_fcz_svb"> <li class="li">删除分区数据盘不会丢失盘内数据。</li> <li class="li">硬盘有多个分区不建议此操作。</li> </ul> </div> </div></li> <li class="li">输入 n 键,然后回车,开始创建新的分区。</li> <li class="li">输入 p 键,然后回车,创建主分区。</li> <li class="li">输入分区编号,示例使用默认 1 编号,回车。</li> <li class="li">输入第一个扇区编号,示例使用默认值,回车。</li> <li class="li">输入最后一个扇区编号,示例使用默认值,回车。</li> <li class="li">最后输入 w 键,然后回车,写入更改。</li> </ol><p class="p"><img class="image" id="Expand__image_hyz_kcz_svb" src="https://obs-cn-shanghai.fincloud.pinganyun.com/pacloud/20232006152128-1eab66699915.png"></p></li> <li class="li">检查文件系统e2fsck -f /dev/vdb1,刷新文件系统大小resize2fs /dev/vdb1。<p class="p"><img class="image" id="Expand__image_c4l_4cz_svb" src="https://obs-cn-shanghai.fincloud.pinganyun.com/pacloud/20232006152128-1561a1829b9e.png"></p><p class="p"><img class="image" id="Expand__image_x3g_pcz_svb" src="https://obs-cn-shanghai.fincloud.pinganyun.com/pacloud/20232006152128-1cb7eab995dc.png"></p></li> <li class="li">重新挂载分区mount /dev/vdb1 /test,使用df –h查看扩容后的分区。<p class="p"><img class="image" id="Expand__image_hwh_5cz_svb" src="https://obs-cn-shanghai.fincloud.pinganyun.com/pacloud/20232006152128-1c40ba319c58.png"></p></li> </ol> </section> <section class="section" id="Expand__section_hrn_5cz_svb"><h2 class="doc-tairway">磁盘分区、格式化和挂载</h2> <ol class="ol" id="Expand__ol_knj_xcz_svb"> <li class="li">对数据盘进行分区,依次执行以下命令:<ol class="ol" type="a" id="Expand__ol_eh2_ycz_svb"> <li class="li">运行 fdisk /dev/vdb:对数据盘进行分区。</li> <li class="li">输入 n 并按回车键:创建一个新分区。</li> </ol></li> <li class="li">查看新的分区:运行命令 fdisk -l。</li> <li class="li">在新分区上创建一个文件系统:运行命令<code class="ph codeph"> mkfs.ext3 /dev/vdb1</code>。</li> <li class="li">(建议)备份 etc/fstab:运行命令 <code class="ph codeph">cp /etc/fstab /etc/fstab.bak</code>。</li> <li class="li">硬盘分区挂载可以通过分区号挂载,也可以通过UUID号挂载。<ol class="ol" type="a" id="Expand__ol_rdl_1dz_svb"> <li class="li">分区号挂载方式<p class="p">向 /etc/fstab 写入新分区信息:运行命令 <code class="ph codeph">echo /dev/vdb1 /mnt ext3 defaults 0 0 >> /etc/fstab</code></p></li> <li class="li">UUID号挂载方式<div class="p"> <pre class="pre codeblock" id="Expand__codeblock_rtz_bdz_svb"><code>[root@ebs/]# blkid /dev/vdb1</code></pre> </div><p class="p"><img class="image" id="Expand__image_q32_fdz_svb" src="https://obs-cn-shanghai.fincloud.pinganyun.com/pacloud/20232006152128-1195878d9e31.png"></p><p class="p">向 /etc/fstab 写入新分区信息:运行命令 <code class="ph codeph">echo UUID=49c0904a-42ce-4eef-87df-0f7de059e68e /mnt ext3 defaults 0 0 >> /etc/fstab</code></p><p class="p"><img class="image" id="Expand__image_cyg_3dz_svb" src="https://obs-cn-shanghai.fincloud.pinganyun.com/pacloud/20232006152128-15cad13e9932.png"></p></li> </ol></li> <li class="li">挂载文件系统:运行命令 mount /dev/vdb1 /mnt</li> <li class="li">查看磁盘空间和使用:df –h,如下可看到/mnt目录已经挂载成功。<p class="p"><img class="image" id="Expand__image_qng_ldz_svb" src="https://obs-cn-shanghai.fincloud.pinganyun.com/pacloud/20232006152128-190d311e9b56.png"></p><p class="p">挂载完成后,即可开始使用文件系统空间。</p></li> </ol> </section>
以上内容是否解决了您的问题?
请补全提交信息!
联系我们

电话咨询

400-151-8800

邮件咨询

fincloud@ocft.com

在线客服

工单支持

解决云产品相关技术问题