https://www.jerry.ink/tags/linux/ Recent content in Linux on Jerry的技术站 Hugo -- gohugo.io zh Tue, 26 Sep 2023 00:00:00 +0000 https://www.jerry.ink/posts/linux-swap/ Tue, 26 Sep 2023 00:00:00 +0000 https://www.jerry.ink/posts/linux-swap/ <p>本文收集 Linux 调整交换空间的常用步骤。以下示例在 Ubuntu 18.04 上验证，将 swapfile 设置为 10G。</p> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-text-size-adjust:none;"><code class="language-sh" data-lang="sh"><span style="display:flex;"><span>sudo swapon --show </span></span><span style="display:flex;"><span>sudo swapoff -a </span></span><span style="display:flex;"><span>sudo fallocate -l 10G /swapfile </span></span><span style="display:flex;"><span>sudo chmod <span style="color:#ae81ff">600</span> /swapfile </span></span><span style="display:flex;"><span>sudo mkswap /swapfile </span></span><span style="display:flex;"><span>sudo swapon /swapfile </span></span><span style="display:flex;"><span>echo <span style="color:#e6db74">&#39;/swapfile swap swap defaults 0 0&#39;</span> | sudo tee -a /etc/fstab </span></span><span style="display:flex;"><span>sudo swapon --show </span></span><span style="display:flex;"><span>sudo free -h </span></span></code></pre></div><p>修改 <code>/etc/fstab</code> 前，应确认没有同一路径的旧条目，避免重复挂载。若 <code>fallocate</code> 不可用，可视发行版情况使用 <code>dd</code> 创建文件；执行前也要确保磁盘有足够空间。</p>