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<base href="https://bugs.freedesktop.org/" />
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<th>Priority</th>
<td>medium
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<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - Allow to disable setting the kernel time zone"
href="https://bugs.freedesktop.org/show_bug.cgi?id=81538">81538</a>
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<th>Assignee</th>
<td>systemd-bugs@lists.freedesktop.org
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<th>Summary</th>
<td>Allow to disable setting the kernel time zone
</td>
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<th>QA Contact</th>
<td>systemd-bugs@lists.freedesktop.org
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<th>Severity</th>
<td>enhancement
</td>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>OS</th>
<td>Linux (All)
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<th>Reporter</th>
<td>nicolas.george@normalesup.org
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<th>Hardware</th>
<td>All
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<th>Status</th>
<td>NEW
</td>
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<th>Version</th>
<td>unspecified
</td>
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<th>Component</th>
<td>general
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<th>Product</th>
<td>systemd
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<p>
<div>
<pre>At boot, systemd sets the kernel timezone based on the default userspace
timezone (/etc/localtime).
Setting the kernel timezone is dangerous, as it has strange effects on the
timestamps of legacy filesystems (the timestamps on the other side of the
daylight saving time change are off by one). The tz=UTC option exists, but not
all mounting tool allow to enable it, and no mounting tool can avoid forgetting
it. I find it much safer to leave the kernel with the pure Unix time and only
use the local time in userland.
Therefore, please add a way of disabling setting the kernel time zone, i.e.
never call settimeofday() with a non-NULL second argument.</pre>
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</p>
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