16 lines
771 B
YAML
16 lines
771 B
YAML
---
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upgrade:
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- |
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The ``CoreFilter``, ``DiskFilter`` and ``RamFilter``, which were
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deprecated in Stein (19.0.0), are now removed. ``VCPU``,
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``DISK_GB`` and ``MEMORY_MB`` filtering is performed natively
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using the Placement service. These filters have been warning
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operators at startup that they conflict with proper operation of
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placement and should have been disabled since approximately
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Pike. If you did still have these filters enabled and were relying
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on them to account for virt driver overhead (at the expense of
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scheduler races and retries), see the `scheduler`_ documentation about
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the topic.
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.. _scheduler: https://docs.openstack.org/nova/latest/admin/configuration/schedulers.html#hypervisor-specific-considerations
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