Linux使用vim编辑文件保存时报E514:write error (file system full?)问题解决
<p><span><strong>发现问题</strong></span></p>
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今天在Linux上使用vim编辑文件保存时报如下错误：</p>
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<code class="bash plain">E514: write error (</code><code class="bash functions">file</code> <code class="bash plain">system full?)</code>
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从错误看，是磁盘满了，于是使用df -hl查看磁盘使用情况</p>
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<code class="bash plain">$ </code><code class="bash functions">sudo</code> <code class="bash functions">df</code> <code class="bash plain">-hl</code>
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<code class="bash plain">Filesystem Size Used Avail Use% Mounted on</code>
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<code class="bash plain">/dev/mapper/vg_myserver-lv_root</code> <code class="bash plain">50G 43G 4.6G 91% /</code>
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<code class="bash plain">tmpfs 7.8G 268K 7.8G 1% </code><code class="bash plain">/dev/shm</code>
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<code class="bash plain">/dev/sda1</code> <code class="bash plain">477M 61M 391M 14% </code><code class="bash plain">/boot</code>
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<code class="bash plain">/dev/mapper/vg_myserver-lv_home</code> <code class="bash plain">1.8T 1.7T 0 100% </code><code class="bash plain">/home</code>
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从结果看，确实是/home磁盘满了。</p>
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但是此时，当我使用root用户在/home写写文件时候却不会出现上面的错。</p>
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查了半天，原来是Linux在每个分区中会为root用户保留一部份空间，这是专门留给root用户及其所属组使用，别的用户是无法使用的，一般默认为总数据块的5%。</p>
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<span><strong>解决方法</strong></span></p>
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这个预留的空间可以使用下面的命令查看</p>
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<code class="bash plain">$ </code><code class="bash functions">sudo</code> <code class="bash plain">tune2fs -l <device> | </code><code class="bash functions">grep</code> <code class="bash plain">Reserved</code>
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比如：</p>
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<code class="bash plain">$ </code><code class="bash functions">sudo</code> <code class="bash plain">tune2fs -l </code><code class="bash plain">/dev/sda1</code> <code class="bash plain">| </code><code class="bash functions">grep</code> <code class="bash plain">Reserved</code>
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或</p>
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<code class="bash plain">$ </code><code class="bash functions">sudo</code> <code class="bash plain">tune2fs -l </code><code class="bash plain">/dev/mapper/vg_rhserver33-lv_home</code> <code class="bash plain">| </code><code class="bash functions">grep</code> <code class="bash plain">Reserved</code>
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<code class="bash plain">Reserved block count: 23551078</code>
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<code class="bash plain">Reserved GDT blocks: 911</code>
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<code class="bash plain">Reserved blocks uid: 0 (user root)</code>
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<code class="bash plain">Reserved blocks gid: 0 (group root)</code>
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好了，知道了问题，那我们就清理一下磁盘空间吧，清理了一定磁盘空间后，最终我可以继续写入数据了。</p>
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<span><strong>总结</strong></span></p>
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以上就是这篇文章的全部内容了，希望本文的内容对大家的学习或者工作具有一定的参考学习价值，如果有疑问大家可以留言交流，谢谢大家对的支持。</p>
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原文链接：http://blog.csdn.net/kongxx/article/details/79246312</p>
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