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<base href="https://bugs.freedesktop.org/" />
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<th>Priority</th>
<td>medium
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<tr>
<th>Bug ID</th>
<td><a class="bz_bug_link
bz_status_NEW "
title="NEW --- - journalctl -b doesn't do what is expected when there are explicit disjunctions"
href="https://bugs.freedesktop.org/show_bug.cgi?id=63277">63277</a>
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<th>Assignee</th>
<td>systemd-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Summary</th>
<td>journalctl -b doesn't do what is expected when there are explicit disjunctions
</td>
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<th>QA Contact</th>
<td>systemd-bugs@lists.freedesktop.org
</td>
</tr>
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<th>Severity</th>
<td>normal
</td>
</tr>
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<th>Classification</th>
<td>Unclassified
</td>
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<th>OS</th>
<td>All
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<th>Reporter</th>
<td>marius.vollmer@redhat.com
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<th>Hardware</th>
<td>Other
</td>
</tr>
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<th>Status</th>
<td>NEW
</td>
</tr>
<tr>
<th>Version</th>
<td>unspecified
</td>
</tr>
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<th>Component</th>
<td>general
</td>
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<th>Product</th>
<td>systemd
</td>
</tr></table>
<p>
<div>
<pre>I expect "-b" to never output entries that don't belong to the current boot,
but when there are explicit disjunctions in the match expression, it gets
confused.
This is correct:
# journalctl -b -o verbose | grep _BOOT_ID | sort | uniq
_BOOT_ID=e2e2a996e7da4fb28d56f12a9c8a5261
(only one boot id)
but this isn't:
# journalctl -b -o verbose _PID=2 + _PID=1 | grep _BOOT_ID | sort | uniq
_BOOT_ID=1e128df28b734458a797870d84a806ee
_BOOT_ID=361717ded01e4a3d896f52f3bbd9cde7
_BOOT_ID=6805fcfa65334dd188c78e54962c2f2e
_BOOT_ID=7af680e2259a4af0b81a948950d3046b
_BOOT_ID=91283683ba8b4164b8bde31498f85d4e
_BOOT_ID=e2e2a996e7da4fb28d56f12a9c8a5261
(many boot ids)
I guess this happens because "-b" just adds a single "_BOOT_ID=..." match which
results in an effective match expression of
(_BOOT_ID=... && _PID=2) || (_PID=1)
in the last case.
To fix this, the _BOOT_ID_... match needs to _also_ be added after each call to
sd_journal_add_disjunction, I think. Patch with pleasure on request.</pre>
</div>
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