def cache_status(self):
if not self.is_cached():
raise ValueError('LV is of wrong type')
devpath = self.path
s = os.stat(devpath)
major, minor = os.major(s.st_rdev), os.minor(s.st_rdev)
mapper = find_device('/dev/mapper', major, minor)
if mapper is None:
raise KeyError('failed to find device mapper entry for '
'%s/%s' % (self.vg.name, self.name))
status = dmsetup('status', mapper)
status = dict(
zip(cache_status_fields,
status.strip().split()[:len(cache_status_fields)]))
status['read_hits_ratio'] = \
100 * float(status['read_hits']) / (float(status['read_hits']) +
float(status['read_misses']))
status['write_hits_ratio'] = \
100 * float(status['write_hits']) / (float(status['write_hits']) +
float(status['write_misses']))
for k in status.keys():
if isinstance(status[k], basestring):
if status[k].isdigit():
status[k] = int(status[k])
elif '/' in status[k]:
a, b = [int(x) for x in status[k].split('/')]
status['%s_pct' % k] = (a * 1.0 / b * 1.0) * 100
return status
def cache_status(self):
if not self.is_cached():
raise ValueError('LV is of wrong type')
devpath = self.path
s = os.stat(devpath)
major, minor = os.major(s.st_rdev), os.minor(s.st_rdev)
mapper = find_device('/dev/mapper', major, minor)
if mapper is None:
raise KeyError('failed to find device mapper entry for '
'%s/%s' % (self.vg.name, self.name))
status = dmsetup('status', mapper)
status = dict(zip(cache_status_fields,
status.strip().split()[:len(cache_status_fields)]))
for k in status.keys():
if status[k].isdigit():
status[k] = int(status[k])
elif '/' in status[k]:
a, b = [int(x) for x in status[k].split('/')]
status['%s_pct' % k] = (a*1.0/b*1.0)*100
return status
def resize(cls, container_id, new_size=10240):
"""resize container disk space, only support devicemapper storage backend
args:
new_size: 1024Mb
"""
dev_path = glob.glob("/dev/mapper/docker-*-*-%s*" % container_id)
if dev_path:
dev = os.path.basename(dev_path[0])
else:
return
#load
table = sh.dmsetup('table', dev).split()
table[1] = str(int(new_size) * 1024 * 1024 / 512)
sh.dmsetup((sh.echo(' '.join(table))), 'load', dev)
sh.dmsetup('resume', dev)
sh.resize2fs(dev_path[0])
def resize(cls, container_id, new_size=10240):
"""resize container disk space, only support devicemapper storage backend
args:
new_size: 1024Mb
"""
dev_path = glob.glob("/dev/mapper/docker-*-*-%s*" % container_id)
if dev_path:
dev = os.path.basename(dev_path[0])
else:
return
#load
table = sh.dmsetup('table', dev).split()
table[1] = str(int(new_size)*1024*1024/512)
sh.dmsetup((sh.echo(' '.join(table))), 'load', dev)
sh.dmsetup('resume', dev)
sh.resize2fs(dev_path[0])
def cache_status(self):
if not self.is_cached():
raise ValueError("LV is of wrong type")
devpath = self.lv_dm_path
s = os.stat(devpath)
major, minor = os.major(s.st_rdev), os.minor(s.st_rdev)
mapper = find_device("/dev/mapper", major, minor)
if mapper is None:
raise KeyError("failed to find device mapper entry for " "%s/%s" % (self.vg.name, self.name))
status = dmsetup("status", mapper)
status = dict(zip(cache_status_fields, status.strip().split()[: len(cache_status_fields)]))
for k in status.keys():
if status[k].isdigit():
status[k] = int(status[k])
elif "/" in status[k]:
a, b = [int(x) for x in status[k].split("/")]
status["%s_pct" % k] = (a * 1.0 / b * 1.0) * 100
return status
