openstack/cinder
Code Issues Proposed changes

Improve logs on scheduler

Browse Source 
Scheduler decisions still not easy to track due lacking of information
about backends and pools. This adds more verbose information on that
so we can have a better means to help debug problems.

TrivialFix

Change-Id: I4a59ed298ba2542dcb4d6787b47085749a34244e
(cherry picked from commit 9c4cd4a2d7)
This commit is contained in:
Erlon R. Cruz 2018-02-12 15:41:17 -02:00
parent d02b6894f5
commit 525191ab0f
2 changed files with 33 additions and 7 deletions
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16
cinder/scheduler/filters/capacity_filter.py
View File

@ -118,6 +118,10 @@ class CapacityFilter(filters.BaseBackendFilter):
if provision_type == 'thick':
thin = False
msg_args = {"grouping_name": backend_state.backend_id,
"grouping": grouping,
"requested": requested_size,
"available": free}
# Only evaluate using max_over_subscription_ratio if
# thin_provisioning_support is True. Check if the ratio of
# provisioned capacity over total capacity has exceeded over
@ -126,6 +130,8 @@ class CapacityFilter(filters.BaseBackendFilter):
backend_state.max_over_subscription_ratio >= 1):
provisioned_ratio = ((backend_state.provisioned_capacity_gb +
requested_size) / total)
LOG.debug("Checking provisioning for request of %s GB. "
"Backend: %s", requested_size, backend_state)
if provisioned_ratio > backend_state.max_over_subscription_ratio:
msg_args = {
"provisioned_ratio": provisioned_ratio,
@ -159,6 +165,11 @@ class CapacityFilter(filters.BaseBackendFilter):
"(%(available)sGB) to accommodate thin "
"provisioned %(size)sGB volume on %(grouping)s"
" %(grouping_name)s.", msg_args)
else:
LOG.debug("Space information for volume creation "
"on %(grouping)s %(grouping_name)s "
"(requested / avail): "
"%(requested)s/%(available)s", msg_args)
return res
elif thin and backend_state.thin_provisioning_support:
LOG.warning("Filtering out %(grouping)s %(grouping_name)s "
@ -171,11 +182,6 @@ class CapacityFilter(filters.BaseBackendFilter):
"grouping_name": backend_state.backend_id})
return False
msg_args = {"grouping_name": backend_state.backend_id,
"grouping": grouping,
"requested": requested_size,
"available": free}
if free < requested_size:
LOG.warning("Insufficient free space for volume creation "
"on %(grouping)s %(grouping_name)s (requested / "

24
cinder/scheduler/host_manager.py
View File

@ -313,6 +313,7 @@ class BackendState(object):
self.free_capacity_gb -= volume_gb
if update_time:
self.updated = timeutils.utcnow()
LOG.debug("Consumed %s GB from backend: %s", volume['size'], self)
def __repr__(self):
# FIXME(zhiteng) backend level free_capacity_gb isn't as
@ -320,8 +321,27 @@ class BackendState(object):
# come up with better representation of HostState.
grouping = 'cluster' if self.cluster_name else 'host'
grouping_name = self.backend_id
return ("%s '%s': free_capacity_gb: %s, pools: %s" %
(grouping, grouping_name, self.free_capacity_gb, self.pools))
return ("%(grouping)s '%(grouping_name)s':"
"free_capacity_gb: %(free_capacity_gb)s, "
"total_capacity_gb: %(total_capacity_gb)s,"
"allocated_capacity_gb: %(allocated_capacity_gb)s, "
"max_over_subscription_ratio: %(mosr)s,"
"reserved_percentage: %(reserved_percentage)s, "
"provisioned_capacity_gb: %(provisioned_capacity_gb)s,"
"thin_provisioning_support: %(thin_provisioning_support)s, "
"thick_provisioning_support: %(thick)s,"
"pools: %(pools)s,"
"updated at: %(updated)s" %
{'grouping': grouping, 'grouping_name': grouping_name,
'free_capacity_gb': self.free_capacity_gb,
'total_capacity_gb': self.total_capacity_gb,
'allocated_capacity_gb': self.allocated_capacity_gb,
'mosr': self.max_over_subscription_ratio,
'reserved_percentage': self.reserved_percentage,
'provisioned_capacity_gb': self.provisioned_capacity_gb,
'thin_provisioning_support': self.thin_provisioning_support,
'thick': self.thick_provisioning_support,
'pools': self.pools, 'updated': self.updated})
class PoolState(BackendState):