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(parent: 41ddaba) | patch
Add optional ionice to volume clearing process
authorDuncan Thomas <duncan.thomas@hp.com>
Wed, 19 Feb 2014 19:03:24 +0000 (19:03 +0000)
committerDuncan Thomas <duncan.thomas@hp.com>
Wed, 26 Feb 2014 20:22:27 +0000 (20:22 +0000)
commitfb49b475cb69105cfd0123a28a13382a9ed9358e
tree16d12ce4c832e90b31efa8b3206c2e5b707d90e8tree | snapshot
parent41ddaba58d9cd95e02dc4d9d3c4d67e39eef6678commit | diff
Add optional ionice to volume clearing process

Allow the volume clearing process to have an ionice priority set to
reduce the performance impact of volume zeroing. Note that this may
cause volume clearing processes to get backed up on  a busy system, use
with care.

DocImpact
Change-Id: I2d556f57aaca8a8ccc6f0f767f1cec28c3f9bc86
Implements: blueprint when-deleting-volume-dd-performance
cinder/tests/test_volume_utils.py diff | blob | history
cinder/volume/driver.py diff | blob | history
cinder/volume/utils.py diff | blob | history
etc/cinder/cinder.conf.sample diff | blob | history