12 lines
619 B
YAML
12 lines
619 B
YAML
---
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features:
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- |
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A new quota driver is added: ``DbQuotaNoLockDriver``. This driver, unlike
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``DbQuotaDriver``, does not create a unique lock per (resource,
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project_id). That may lead to a database deadlock state if the number of
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server requests exceeds the number of resolved resource creations, as
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described in `LP#1926787 <https://bugs.launchpad.net/neutron/+bug/1926787>`_.
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This driver relays on the database transactionality isolation and counts
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the number of used and reserved resources and, if available, creates the
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new resource reservations in one single database transaction.
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