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	<title>eudev &#8211; richliu&#039;s blog</title>
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		<title>[Gentoo] Moved to eudev from udev</title>
		<link>https://richliu.com/2019/01/19/3406/gentoo-moved-to-eudev-from-udev/</link>
					<comments>https://richliu.com/2019/01/19/3406/gentoo-moved-to-eudev-from-udev/#respond</comments>
		
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		<pubDate>Sat, 19 Jan 2019 01:42:51 +0000</pubDate>
				<category><![CDATA[Gentoo]]></category>
		<category><![CDATA[eudev]]></category>
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					<description><![CDATA[<p>好久沒有寫 Gentoo 的文章了，畢竟除了一般性升級也懶得再動什麼，不過最近一次升級系統又爛了 所有的 ne [&#8230;]</p>
<p>The post <a rel="nofollow" href="https://richliu.com/2019/01/19/3406/gentoo-moved-to-eudev-from-udev/">[Gentoo] Moved to eudev from udev</a> appeared first on <a rel="nofollow" href="https://richliu.com">richliu&#039;s blog</a>.</p>
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<p>好久沒有寫 Gentoo 的文章了，畢竟除了一般性升級也懶得再動什麼，不過最近一次升級系統又爛了</p>



<p>所有的 network interface 變成 eth0/eth1 &#8230;.. ，不再是 predictable network interface names （可預測的網路介面名稱像是 ensp1 這樣的）</p>



<span id="more-3406"></span>



<p>查了一下系統，發現 driver loading 都是正常的，想到 predictable network interface names 最主要的就是 udev ，試著重啟 udev 看看，沒想到所有的 interface 就變回來了</p>



<p>查了一下 Kernel option ，以前 Gentoo 用 predictable network interface names 要開 kernel option ，現在不用，想必已經預設是這樣了<br />下一步就是查一下之前用的 udev ，再編回來。沒想到，舊版的 236 從 portage 移除了，新版的 238 之後， compile error 都要 download systemd 放在裡面。這下原因大白了，八成是這個原因，因為 Gentoo 的老玩家都還在用 OpenRC。</p>



<p>之前在查其他東西的時候有注意到 eudev 這個東西，不過沒有特別注意，但是解法就在這邊<br /><br />簡單的說， eudev 就是 Udev 的 Gentoo 版，給 OpenRC 這樣的舊系統用的，systemd 不要用。<br /><br />真是 %@%@#$%@#$%@#$%#@%$<br /><br />可能有一天真的要升級到 systemd ，我不想啊啊啊啊啊</p>



<p>以下 Copy 自 Gentoo Wiki<br />&#8212;<br /><strong>eudev</strong>&nbsp;is Gentoo&#8217;s fork of&nbsp;<a href="https://wiki.gentoo.org/wiki/Udev" target="_blank" rel="noopener">udev</a>, systemd&#8217;s&nbsp;<a href="https://wiki.gentoo.org/wiki/Device_file" target="_blank" rel="noopener">device file</a>&nbsp;manager for the Linux kernel.<sup><a href="https://wiki.gentoo.org/wiki/Eudev#cite_note-1" target="_blank" rel="noopener">[1]</a></sup>&nbsp;It manages device nodes in&nbsp;<a href="https://wiki.gentoo.org/wiki/Eudev#The_.2Fdev_directory" target="_blank" rel="noopener">/dev</a>&nbsp;and handles all user space actions when adding or removing devices.</p>



<p>The goal of eudev is to obtain better compatibility with existing software such as the&nbsp;<a href="https://wiki.gentoo.org/wiki/OpenRC" target="_blank" rel="noopener">OpenRC</a>&nbsp;init system,&nbsp;<a href="https://en.wikipedia.org/wiki/Upstart" target="_blank" rel="noopener">Upstart</a>&nbsp;init system, older Linux kernels, various toolchains, and anything else required<sup><a href="https://wiki.gentoo.org/wiki/Eudev#cite_note-2" target="_blank" rel="noopener">[2]</a></sup>&nbsp;by (but not well supported through)&nbsp;<strong>udev</strong>.</p>



<p>Similar to ebuild, eclass, emerge, etc. eudev&#8217;s name follows the &#8216;E&#8217; prefix convention started by Gentoo&#8217;s founder Daniel Robbins.<br /></p>



<p>System configurations running&nbsp;<strong>systemd</strong>&nbsp;have no use for eudev.</p>



<p>Ref.<br /><br />https://wiki.gentoo.org/wiki/Eudev</p>
<p>The post <a rel="nofollow" href="https://richliu.com/2019/01/19/3406/gentoo-moved-to-eudev-from-udev/">[Gentoo] Moved to eudev from udev</a> appeared first on <a rel="nofollow" href="https://richliu.com">richliu&#039;s blog</a>.</p>
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