citadel/meta-citadel/recipes-citadel/citadel-documentation/files/pages/developer.page

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2020-12-07 22:24:22 +00:00
<?xml version="1.0" encoding="utf-8"?>
<page xmlns="http://projectmallard.org/1.0/" type="topic" id="developer">
<info>
<link type="guide" xref="index#internals"/>
</info>
<title>Developer Guide</title>
<section>
<title>Make Root Filesystem Writable</title>
<p>Sometimes it can be useful to make changes directly to the citadel root filesystem to
experiment with changes or to debug a problem.</p>
<p>First <code>citadel.noverity</code> must be added to the kernel commandline. After booting with
this command line option verify that dm-verity has been disabled with the <code>dmsetup</code>
command.</p>
<screen># dmsetup status rootfs
0 4194304 linear</screen>
<p>If the output displays <code>verity</code> instead of <code>linear</code> then dm-verity is enabled
and the disk cannot be safely written to.</p>
<p>Next remount the root filesystem with read-write flag.</p>
<screen># mount -oremount,rw,noatime /</screen>
</section>
<section>
<title>Debugging GNOME startup</title>
</section>
</page>