5bf7b9be79
Make the NFS share selection more intelligent by using a used_ratio
and oversub_ratio to determine the valid target. The used_ratio
is a hard-cap of maximum "actual" used space, oversub_ratio allows
for oversubscription of the share based upon the apparant-allocated
space for sparse files.
Removed Options: nfs_disk_util
New options added:
* nfs_used_ratio:
Float representation of the maximum allowed usage (e.g. 0.95
calculated by available_space / total_space) before the share
is no longer concidered a valid target. Default: 0.95
* nfs_oversub_ratio:
Float representation of the oversubscriotion ratio allowed when
utilizing sparse files (determined via "du"). This gets
multiplied against the total_capacity before comparing the
apparant space used by the backing volume files. Default
ratio is 1.0 (meaning reserved/allocated space cannot exceed
total space available on the mount).
DocImpact: New Configuration Options / Removal of Config Option
bp nfs-share-selection-logic-improvement
Change-Id: I3572e106eb4c794b08bf6f499e2da2d494c4072d
23 lines
772 B
Python
23 lines
772 B
Python
# vim: tabstop=4 shiftwidth=4 softtabstop=4
|
|
|
|
# Copyright 2011 OpenStack LLC
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
# not use this file except in compliance with the License. You may obtain
|
|
# a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
# License for the specific language governing permissions and limitations
|
|
# under the License.
|
|
"""
|
|
A module where we define some basic units for use across Cinder.
|
|
"""
|
|
|
|
KiB = 1024
|
|
MiB = KiB * 1024
|
|
GiB = MiB * 1024
|