openstack/cinder
Code Issues Proposed changes

[storwize]:Fixed select_io_group issues

Browse Source 
Fixed issues in select_io_group that impacts the performance during
Create_volume, Group Snapshot/Clone operations for bulk
non-hyperswap volumes.

select_io_grp can avoid get_pool_attrs if the topology is not
hyperswap.

closes bug: #1890588

Change-Id: Ibee878cfe86c82ad4c79247f2a3bd37f08be80b8
This commit is contained in:
katarimanojkumar 2020-08-10 19:07:27 +00:00
parent 0ba9b86e62
commit e554a61844
3 changed files with 77 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

62
cinder/tests/unit/volume/drivers/ibm/test_storwize_svc.py
View File

@ -7181,6 +7181,7 @@ class StorwizeSVCCommonDriverTestCase(test.TestCase):
pool = 'openstack2'
opts['iogrp'] = '0,1'
opts['volume_topology'] = 'hyperswap'
state['available_iogrps'] = [0, 1, 2, 3]
iog = self.driver._helpers.select_io_group(state, opts, pool)
self.assertEqual(0, iog)
@ -8275,6 +8276,66 @@ class StorwizeHelpersTestCase(test.TestCase):
# system io groups
state = {}
lsmdiskgrp.return_value = {}
fake_iog_vdc1 = {0: 10, 1: 50, 2: 50, 3: 300}
fake_iog_vdc2 = {0: 2, 1: 1, 2: 200}
fake_iog_vdc3 = {0: 2, 2: 200}
fake_iog_vdc4 = {0: 100, 1: 100, 2: 100, 3: 100}
fake_iog_vdc5 = {0: 10, 1: 1, 2: 200, 3: 300}
get_vdisk_count_by_io_group.side_effect = [fake_iog_vdc1,
fake_iog_vdc2,
fake_iog_vdc3,
fake_iog_vdc4,
fake_iog_vdc5]
pool = _get_test_pool(False)
opts['volume_topology'] = None
opts['iogrp'] = '0,2'
state['available_iogrps'] = [0, 1, 2, 3]
iog = self.storwize_svc_common.select_io_group(state, opts, pool)
self.assertTrue(iog in state['available_iogrps'])
self.assertEqual(0, iog)
opts['iogrp'] = '0'
state['available_iogrps'] = [0, 1, 2]
iog = self.storwize_svc_common.select_io_group(state, opts, pool)
self.assertTrue(iog in state['available_iogrps'])
self.assertEqual(0, iog)
opts['iogrp'] = '1,2'
state['available_iogrps'] = [0, 2]
iog = self.storwize_svc_common.select_io_group(state, opts, pool)
self.assertTrue(iog in state['available_iogrps'])
self.assertEqual(2, iog)
opts['iogrp'] = ' 0, 1, 2 '
state['available_iogrps'] = [0, 1, 2, 3]
iog = self.storwize_svc_common.select_io_group(state, opts, pool)
self.assertTrue(iog in state['available_iogrps'])
# since vdisk count in all iogroups is same, it will pick the first
self.assertEqual(0, iog)
opts['iogrp'] = '0,1,2, 3'
state['available_iogrps'] = [0, 1, 2, 3]
iog = self.storwize_svc_common.select_io_group(state, opts, pool)
self.assertTrue(iog in state['available_iogrps'])
self.assertEqual(1, iog)
@mock.patch.object(storwize_svc_common.StorwizeSSH, 'lsmdiskgrp')
@mock.patch.object(storwize_svc_common.StorwizeHelpers,
'get_vdisk_count_by_io_group')
def test_select_io_group_hyperswap(self, get_vdisk_count_by_io_group,
lsmdiskgrp):
# given io groups
opts = {}
# system io groups
state = {}
lsmdiskgrp.return_value = {}
fake_iog_vdc1 = {0: 100, 1: 50, 2: 50, 3: 300}
fake_iog_vdc2 = {0: 2, 1: 1, 2: 200}
@ -8289,6 +8350,7 @@ class StorwizeHelpersTestCase(test.TestCase):
fake_iog_vdc5]
pool = _get_test_pool(False)
opts['iogrp'] = '0,2'
opts['volume_topology'] = 'hyperswap'
state['available_iogrps'] = [0, 1, 2, 3]
iog = self.storwize_svc_common.select_io_group(state, opts, pool)

4
cinder/volume/drivers/ibm/storwize_svc/storwize_svc_common.py
View File

@ -871,12 +871,14 @@ class StorwizeHelpers(object):
'avail': state['available_iogrps']})
site_iogrp = []
hyperswap = opts['volume_topology'] == 'hyperswap'
if hyperswap:
pool_data = self.get_pool_attrs(pool)
if pool_data is None:
msg = (_('Failed getting details for pool %s.') % pool)
LOG.error(msg)
raise exception.InvalidConfigurationValue(message=msg)
if 'site_id' in pool_data and pool_data['site_id']:
if hyperswap and pool_data.get('site_id'):
for node in state['storage_nodes'].values():
if pool_data['site_id'] == node['site_id']:
site_iogrp.append(node['IO_group'])

7
releasenotes/notes/bug-1890588-storwize-select_io_group-fix-7200f2e00140ab34.yaml Normal file
View File

@ -0,0 +1,7 @@
---
fixes:
- |
`Bug #1890588 <https://bugs.launchpad.net/cinder/+bug/1890588>`_:
IBM Storwize: Fixed issues in select_io_group that impacts the
performance during Create_volume, Group Snapshot/Clone operations
for bulk non-hyperswap volumes.