本文整理汇总了Python中ovs.dal.lists.vdisklist.VDiskList.get_with_parent_snaphots方法的典型用法代码示例。如果您正苦于以下问题：Python VDiskList.get_with_parent_snaphots方法的具体用法？Python VDiskList.get_with_parent_snaphots怎么用？Python VDiskList.get_with_parent_snaphots使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类ovs.dal.lists.vdisklist.VDiskList的用法示例。
在下文中一共展示了VDiskList.get_with_parent_snaphots方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Python代码示例。
示例1: delete_snapshots
# 需要导入模块: from ovs.dal.lists.vdisklist import VDiskList [as 别名]
# 或者: from ovs.dal.lists.vdisklist.VDiskList import get_with_parent_snaphots [as 别名]
def delete_snapshots(timestamp=None):
"""
Delete snapshots & scrubbing policy
Implemented delete snapshot policy:
< 1d | 1d bucket | 1 | best of bucket | 1d
< 1w | 1d bucket | 6 | oldest of bucket | 7d = 1w
< 1m | 1w bucket | 3 | oldest of bucket | 4w = 1m
> 1m | delete
:param timestamp: Timestamp to determine whether snapshots should be kept or not, if none provided, current time will be used
:type timestamp: float
:return: None
"""
ScheduledTaskController._logger.info('Delete snapshots started')
day = timedelta(1)
week = day * 7
def make_timestamp(offset):
"""
Create an integer based timestamp
:param offset: Offset in days
:return: Timestamp
"""
return int(mktime((base - offset).timetuple()))
# Calculate bucket structure
if timestamp is None:
timestamp = time.time()
base = datetime.fromtimestamp(timestamp).date() - day
buckets = []
# Buckets first 7 days: [0-1[, [1-2[, [2-3[, [3-4[, [4-5[, [5-6[, [6-7[
for i in xrange(0, 7):
buckets.append({'start': make_timestamp(day * i),
'end': make_timestamp(day * (i + 1)),
'type': '1d',
'snapshots': []})
# Week buckets next 3 weeks: [7-14[, [14-21[, [21-28[
for i in xrange(1, 4):
buckets.append({'start': make_timestamp(week * i),
'end': make_timestamp(week * (i + 1)),
'type': '1w',
'snapshots': []})
buckets.append({'start': make_timestamp(week * 4),
'end': 0,
'type': 'rest',
'snapshots': []})
# Get a list of all snapshots that are used as parents for clones
parent_snapshots = set([vd.parentsnapshot for vd in VDiskList.get_with_parent_snaphots()])
# Place all snapshots in bucket_chains
bucket_chains = []
for vdisk in VDiskList.get_vdisks():
if vdisk.info['object_type'] in ['BASE']:
bucket_chain = copy.deepcopy(buckets)
for snapshot in vdisk.snapshots:
if snapshot.get('is_sticky') is True:
continue
if snapshot['guid'] in parent_snapshots:
ScheduledTaskController._logger.info('Not deleting snapshot {0} because it has clones'.format(snapshot['guid']))
continue
timestamp = int(snapshot['timestamp'])
for bucket in bucket_chain:
if bucket['start'] >= timestamp > bucket['end']:
bucket['snapshots'].append({'timestamp': timestamp,
'snapshot_id': snapshot['guid'],
'vdisk_guid': vdisk.guid,
'is_consistent': snapshot['is_consistent']})
bucket_chains.append(bucket_chain)
# Clean out the snapshot bucket_chains, we delete the snapshots we want to keep
# And we'll remove all snapshots that remain in the buckets
for bucket_chain in bucket_chains:
first = True
for bucket in bucket_chain:
if first is True:
best = None
for snapshot in bucket['snapshots']:
if best is None:
best = snapshot
# Consistent is better than inconsistent
elif snapshot['is_consistent'] and not best['is_consistent']:
best = snapshot
# Newer (larger timestamp) is better than older snapshots
elif snapshot['is_consistent'] == best['is_consistent'] and \
snapshot['timestamp'] > best['timestamp']:
best = snapshot
bucket['snapshots'] = [s for s in bucket['snapshots'] if
s['timestamp'] != best['timestamp']]
first = False
elif bucket['end'] > 0:
oldest = None
for snapshot in bucket['snapshots']:
if oldest is None:
oldest = snapshot
# Older (smaller timestamp) is the one we want to keep
elif snapshot['timestamp'] < oldest['timestamp']:
#.........这里部分代码省略.........