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richvdh 2021-07-06 10:00:24 +00:00
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develop/print.html
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@ -1445,6 +1445,30 @@ dpkg -i matrix-synapse-py3_1.3.0+stretch1_amd64.deb
</code></pre>
</li>
</ul>
<h1 id="upgrading-to-v1380"><a class="header" href="#upgrading-to-v1380">Upgrading to v1.38.0</a></h1>
<h2 id="re-indexing-of-events-table-on-postgres-databases"><a class="header" href="#re-indexing-of-events-table-on-postgres-databases">Re-indexing of <code>events</code> table on Postgres databases</a></h2>
<p>This release includes a database schema update which requires re-indexing one of
the larger tables in the database, <code>events</code>. This could result in increased
disk I/O for several hours or days after upgrading while the migration
completes. Furthermore, because we have to keep the old indexes until the new
indexes are ready, it could result in a significant, temporary, increase in
disk space.</p>
<p>To get a rough idea of the disk space required, check the current size of one
of the indexes. For example, from a <code>psql</code> shell, run the following sql:</p>
<pre><code class="language-sql">SELECT pg_size_pretty(pg_relation_size('events_order_room'));
</code></pre>
<p>We need to rebuild <strong>four</strong> indexes, so you will need to multiply this result
by four to give an estimate of the disk space required. For example, on one
particular server:</p>
<pre><code>synapse=# select pg_size_pretty(pg_relation_size('events_order_room'));
pg_size_pretty
----------------
288 MB
(1 row)
</code></pre>
<p>On this server, it would be wise to ensure that at least 1152MB are free.</p>
<p>The additional disk space will be freed once the migration completes.</p>
<p>SQLite databases are unaffected by this change.</p>
<h1 id="upgrading-to-v1370"><a class="header" href="#upgrading-to-v1370">Upgrading to v1.37.0</a></h1>
<h2 id="deprecation-of-the-current-spam-checker-interface"><a class="header" href="#deprecation-of-the-current-spam-checker-interface">Deprecation of the current spam checker interface</a></h2>
<p>The current spam checker interface is deprecated in favour of a new generic modules system.

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develop/upgrade.html
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@ -260,6 +260,30 @@ dpkg -i matrix-synapse-py3_1.3.0+stretch1_amd64.deb
</code></pre>
</li>
</ul>
<h1 id="upgrading-to-v1380"><a class="header" href="#upgrading-to-v1380">Upgrading to v1.38.0</a></h1>
<h2 id="re-indexing-of-events-table-on-postgres-databases"><a class="header" href="#re-indexing-of-events-table-on-postgres-databases">Re-indexing of <code>events</code> table on Postgres databases</a></h2>
<p>This release includes a database schema update which requires re-indexing one of
the larger tables in the database, <code>events</code>. This could result in increased
disk I/O for several hours or days after upgrading while the migration
completes. Furthermore, because we have to keep the old indexes until the new
indexes are ready, it could result in a significant, temporary, increase in
disk space.</p>
<p>To get a rough idea of the disk space required, check the current size of one
of the indexes. For example, from a <code>psql</code> shell, run the following sql:</p>
<pre><code class="language-sql">SELECT pg_size_pretty(pg_relation_size('events_order_room'));
</code></pre>
<p>We need to rebuild <strong>four</strong> indexes, so you will need to multiply this result
by four to give an estimate of the disk space required. For example, on one
particular server:</p>
<pre><code>synapse=# select pg_size_pretty(pg_relation_size('events_order_room'));
pg_size_pretty
----------------
288 MB
(1 row)
</code></pre>
<p>On this server, it would be wise to ensure that at least 1152MB are free.</p>
<p>The additional disk space will be freed once the migration completes.</p>
<p>SQLite databases are unaffected by this change.</p>
<h1 id="upgrading-to-v1370"><a class="header" href="#upgrading-to-v1370">Upgrading to v1.37.0</a></h1>
<h2 id="deprecation-of-the-current-spam-checker-interface"><a class="header" href="#deprecation-of-the-current-spam-checker-interface">Deprecation of the current spam checker interface</a></h2>
<p>The current spam checker interface is deprecated in favour of a new generic modules system.