mirror of https://github.com/ceph/ceph
doc/releases/nautilus: move note to 14.2.2
Oops! This change was merged in 404ed645d4
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which was not part of 14.2.1 after all.
Signed-off-by: Sage Weil <sage@redhat.com>
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@ -33,6 +33,29 @@ Notable Changes
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are 14.2.2 (or later), are BlueStore, and (if they were created
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prior to Nautilus) have been updated via the ``repair`` function.
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* The default value for `mon_crush_min_required_version` has been
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changed from `firefly` to `hammer`, which means the cluster will
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issue a health warning if your CRUSH tunables are older than hammer.
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There is generally a small (but non-zero) amount of data that will
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move around by making the switch to hammer tunables; for more information,
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see :ref:`crush-map-tunables`.
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If possible, we recommend that you set the oldest allowed client to `hammer`
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or later. You can tell what the current oldest allowed client is with::
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ceph osd dump | grep min_compat_client
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If the current value is older than hammer, you can tell whether it
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is safe to make this change by verifying that there are no clients
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older than hammer current connected to the cluster with::
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ceph features
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The newer `straw2` CRUSH bucket type was introduced in hammer, and
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ensuring that all clients are hammer or newer allows new features
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only supported for `straw2` buckets to be used, including the
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`crush-compat` mode for the :ref:`balancer`.
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Changelog
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---------
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@ -253,29 +276,6 @@ ceph, general guidelines for upgrade to nautilus must be followed
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Notable Changes
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---------------
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* The default value for `mon_crush_min_required_version` has been
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changed from `firefly` to `hammer`, which means the cluster will
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issue a health warning if your CRUSH tunables are older than hammer.
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There is generally a small (but non-zero) amount of data that will
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move around by making the switch to hammer tunables; for more information,
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see :ref:`crush-map-tunables`.
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If possible, we recommend that you set the oldest allowed client to `hammer`
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or later. You can tell what the current oldest allowed client is with::
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ceph osd dump | grep min_compat_client
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If the current value is older than hammer, you can tell whether it
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is safe to make this change by verifying that there are no clients
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older than hammer current connected to the cluster with::
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ceph features
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The newer `straw2` CRUSH bucket type was introduced in hammer, and
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ensuring that all clients are hammer or newer allows new features
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only supported for `straw2` buckets to be used, including the
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`crush-compat` mode for the :ref:`balancer`.
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* Ceph now packages python bindings for python3.6 instead of
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python3.4, because EPEL7 recently switched from python3.4 to
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python3.6 as the native python3. see the `announcement <https://lists.fedoraproject.org/archives/list/epel-announce@lists.fedoraproject.org/message/EGUMKAIMPK2UD5VSHXM53BH2MBDGDWMO/>`_
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