nova/releasenotes/notes/bfv-instances-no-longer-all...

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---
fixes:
- |
Booting volume-backed instances no longer includes an incorrect allocation
against the compute node for the root disk. Historically, this has been
quite broken behavior in Nova, where volume-backed instances would count
against available space on the compute node, even though their storage
was provided by the volume service. Now, newly-booted volume-backed
instances will not create allocations of ``DISK_GB`` against the compute
node for the ``root_gb`` quantity in the flavor. Note that if you are
still using a scheduler configured with the (now deprecated)
DiskFilter (including deployments using CachingScheduler), the
above change will not apply to you.