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doc: document debugging for libcephsqlite

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Fixes: https://tracker.ceph.com/issues/57127
Signed-off-by: Patrick Donnelly <pdonnell@redhat.com>
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Patrick Donnelly 2022-08-15 11:05:21 -04:00
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doc/rados/api/libcephsqlite.rst
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@ -426,6 +426,22 @@ the asynchronous writes as well as an asynchronous update to the size of the
striped file.
Debugging
^^^^^^^^^
Debugging libcephsqlite can be turned on via::
debug_cephsqlite
If running the ``sqlite3`` command-line tool, use:
.. code:: sh
env CEPH_ARGS='--log_to_file true --log-file sqlite3.log --debug_cephsqlite 20 --debug_ms 1' sqlite3 ...
This will save all the usual Ceph debugging to a file ``sqlite3.log`` for inspection.
.. _SQLite: https://sqlite.org/index.html
.. _SQLite VFS: https://www.sqlite.org/vfs.html
.. _SQLite Backup: https://www.sqlite.org/backup.html