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Document Ceph Squid bug and workaround #1973

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Nov 11, 2025
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Document Ceph Squid bug and workaround #1973

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12 changes: 12 additions & 0 deletions doc/source/operations/upgrading-ceph.rst
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Expand Up @@ -159,6 +159,18 @@ versions``. Once confirmed, run the following command:

ceph osd require-osd-release squid

.. warning::

There is a `known bug causing OSDs created on Squid to crash
<https://tracker.ceph.com/issues/70390>`__. To avoid it, `disable the
Elastic Shared Blob feature
<https://docs.clyso.com/blog/#squid-deployed-osds-are-crashing>`__ before
any OSDs are created or replaced:

.. code-block:: bash

ceph config set osd bluestore_elastic_shared_blobs 0

Upgrade Cephadm
===============

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