Red Hat Bugzilla – Bug 1334545
[RFE][cinder] Capacity derived storage QoS limits
Last modified: 2018-02-05 14:02:04 EST
AWS EBS provides a deterministic number of IOPS based on the capacity of the provisioned volume with Provisioned IOPS. Similarly, the newly announced throughput optimized volumes provide deterministic throughput based on the capacity of the provisioned volume. Cinder should, in addition to current per volume maximums, be able to set lower qos limits based on the provisioned capacity.
*** Bug 1328728 has been marked as a duplicate of this bug. ***
I failed to see any change in writing or reading files while preforming manual tests of this feature so I have a few questions for this feature implantation 0) Is configuration (cinder.conf / nova.conf files) is needed for activate QoS in Cinder or Nova 1) Is this feature applicable to all backends ? 2) Is it applicable to local LVM ? 3) When A QoS value is being change do a volume remove from server is needed ? Thanks Avi
Verified according to test plan RHELOSP-24186 The following packages tested on the setup: puppet-cinder-11.3.0-0.20170805095005.74836f2.el7ost.noarch openstack-cinder-11.0.0-0.20170807225447.7ec31dc.el7ost.noarch python-cinderclient-3.1.0-0.20170802135939.99bb6f3.el7ost.noarch python-cinder-11.0.0-0.20170807225447.7ec31dc.el7ost.noarch ************************************************************************* The read iops results on 1GB volume and 5GB volume # rm -f /root/kuku/file512MB ; rsync --progress /vol1gb/file512MB /root/kuku/ file512MB 536870912 100% 1.25MB/s 0:06:49 (xfer#1, to-check=0/1) sent 536936518 bytes received 31 bytes 1308006.21 bytes/sec total size is 536870912 speedup is 1.00 # rm -f /root/kuku/file512MB ; rsync --progress /vol5gb/file512MB /root/kuku/ file512MB 536870912 100% 6.26MB/s 0:01:21 (xfer#1, to-check=0/1) sent 536936518 bytes received 31 bytes 6508321.81 bytes/sec total size is 536870912 speedup is 1.00 # rm -f /root/kuku/file512MB ; rsync --progress /vol_no_qos/file512MB /root/kuku/ file512MB 536870912 100% 96.27MB/s 0:00:05 (xfer#1, to-check=0/1) sent 536936518 bytes received 31 bytes 97624827.09 bytes/sec total size is 536870912 speedup is 1.00 ******************************************************************* The write iops results on 1GB volume and 5GB volume rm -f /vol1gb/file512MB ;rsync --progress /root/file512MB /vol1gb/ file512MB 536870912 100% 3.45MB/s 0:02:28 (xfer#1, to-check=0/1) sent 536936518 bytes received 31 bytes 3591548.82 bytes/sec total size is 536870912 speedup is 1.00 # rm -f /vol5gb/file512MB ;rsync --progress /root/file512MB /vol5gb/ file512MB 536870912 100% 19.31MB/s 0:00:26 (xfer#1, to-check=0/1) sent 536936518 bytes received 31 bytes 19524965.42 bytes/sec total size is 536870912 speedup is 1.00 # rm -f /vol_no_qos/file512MB;rsync --progress /root/file512MB /vol_no_qos/ file512MB 536870912 100% 91.93MB/s 0:00:05 (xfer#1, to-check=0/1) sent 536936518 bytes received 31 bytes 97624827.09 bytes/sec total size is 536870912 speedup is 1.00 ***************************************************************** The total iops results on 1GB volume and 5GB volume: # rm -f /vol1gb/file512MB ;rsync --progress /root/file512MB /vol1gb/ file512MB 536870912 100% 7.05MB/s 0:01:12 (xfer#1, to-check=0/1) sent 536936518 bytes received 31 bytes 7305259.17 bytes/sec total size is 536870912 speedup is 1.00 # rm -f /vol5gb/file512MB ;rsync --progress /root/file512MB /vol5gb/ file512MB 536870912 100% 36.41MB/s 0:00:14 (xfer#1, to-check=0/1) sent 536936518 bytes received 31 bytes 37030106.83 bytes/sec total size is 536870912 speedup is 1.00 # rm -f /vol_no_qos/file512MB;rsync --progress /root/file512MB /vol_no_qos/ file512MB 536870912 100% 87.31MB/s 0:00:05 (xfer#1, to-check=0/1) sent 536936518 bytes received 31 bytes 82605622.92 bytes/sec total size is 536870912 speedup is 1.00 # rm -f /root/kuku/file512MB;rsync --progress /vol1gb/file512MB /root/kuku/ file512MB 536870912 100% 1.25MB/s 0:06:50 (xfer#1, to-check=0/1) sent 536936518 bytes received 31 bytes 1308006.21 bytes/sec total size is 536870912 speedup is 1.00 # rm -f /root/kuku/file512MB;rsync --progress /vol5gb/file512MB /root/kuku/ file512MB 536870912 100% 6.26MB/s 0:01:21 (xfer#1, to-check=0/1) sent 536936518 bytes received 31 bytes 6508321.81 bytes/sec total size is 536870912 speedup is 1.00
Hi Eric, I only edited the draft doc text that was already in this bug, so I apologize if I missed anything but I assumed that the text is technically accurate and therefore only required proofreading. If you could please update the content of the doc text field to reflect the issue and the fix, following the doc text format if possible, this will be a great help and then I can tweak it to align with Errata conventions.
Since the problem described in this bug report should be resolved in a recent advisory, it has been closed with a resolution of ERRATA. For information on the advisory, and where to find the updated files, follow the link below. If the solution does not work for you, open a new bug report. https://access.redhat.com/errata/RHEA-2017:3462