def create(self, dbg, uri, configuration):
log.debug(
"%s: xcpng.libsbd.sr.SROperations.create: uri: %s configuration %s"
% (dbg, uri, configuration))
if 'bindnetaddr' not in configuration:
raise Exception(
'Failed to connect to Sheepdog cluster. Parameter \'bindnetaddr\' is not specified'
)
elif 'mcastaddr' not in configuration:
raise Exception(
'Failed to connect to Sheepdog cluster. Parameter \'mcastaddr\' is not specified'
)
elif 'mcastport' not in configuration:
raise Exception(
'Failed to connect to Sheepdog cluster. Parameter \'mcastport\' is not specified'
)
sr_uuid = get_sr_uuid_by_uri(dbg, uri)
create_chroot(dbg, sr_uuid)
set_chroot(dbg, sr_uuid)
write_corosync_conf(
dbg, sr_uuid,
gen_corosync_conf(dbg, configuration['bindnetaddr'],
configuration['mcastaddr'],
configuration['mcastport']))
start_sheepdog_gateway(dbg, get_sheep_port(dbg, sr_uuid), sr_uuid)
def get_size(self, dbg, uri):
log.debug("%s: xcpng.libsbd.sr.SROperations.sr_size: uri: %s" %
(dbg, uri))
return int(
dog_node_info(dbg, get_sheep_port(dbg,
get_sr_uuid_by_uri(dbg,
uri)))[1])
def dump(self, dbg, uri, json):
log.debug("%s: xcpng.libsbd.meta.MetaDBOpeations.dump: uri: %s" %
(dbg, uri))
length = len(json)
dog_vdi_write(dbg, get_sheep_port(dbg, get_sr_uuid_by_uri(dbg, uri)),
'__meta__', pack("!I%ss" % length, length,
json), 0, length + 4)
def get_vdi_list(self, dbg, uri):
log.debug("%s: xcpng.libsbd.sr.SROperations.get_vdi_list: uri: %s" %
(dbg, uri))
vols = []
for vol in dog_vdi_list(
dbg, get_sheep_port(dbg, get_sr_uuid_by_uri(dbg, uri))):
if vol.startswith(VDI_PREFIXES[get_vdi_type_by_uri(dbg, uri)]):
vols.append(vol)
return vols
def load(self, dbg, uri):
log.debug("%s: xcpng.libsbd.meta.MetaDBOpeations.load: uri: %s" %
(dbg, uri))
sr_uuid = get_sr_uuid_by_uri(dbg, uri)
sheep_port = get_sheep_port(dbg, sr_uuid)
length = unpack('!I', dog_vdi_read(dbg, sheep_port, '__meta__', 0,
4))[0]
data = unpack('!%ss' % length,
dog_vdi_read(dbg, sheep_port, '__meta__', 4, length))[0]
return data
def create(self, dbg, uri):
log.debug("%s: xcpng.libsbd.meta.MetaDBOpeations.create: uri: %s" %
(dbg, uri))
data = '{"sr": {}}'
sr_uuid = get_sr_uuid_by_uri(dbg, uri)
sheep_port = get_sheep_port(dbg, sr_uuid)
dog_vdi_create(dbg, sheep_port, '__meta__', '8M')
length = len(data)
dog_vdi_write(dbg, sheep_port, '__meta__',
pack("!I%ss" % length, length, data), 0, length + 4)
def unlock(self, dbg, uri, timeout=10):
log.debug("%s: xcpng.libsbd.meta.MetaDBOpeations.unlock: uri: %s" %
(dbg, uri))
try:
dog_vdi_delattr(dbg,
get_sheep_port(dbg, get_sr_uuid_by_uri(dbg, uri)),
'__meta__', 'locked')
except Exception as e:
log.debug(
"%s: xcpng.libsbd.meta.MetaDBOpeations.unlock: Failed to unlock MetaDB for uri: %s"
% (dbg, uri))
raise Exception(e)
def sr_import(self, dbg, uri, configuration):
log.debug(
"%s: xcpng.libsbd.sr.SROperations.sr_import: uri: %s configuration %s"
% (dbg, uri, configuration))
if 'bindnetaddr' not in configuration:
raise Exception(
'Failed to connect to Sheepdog cluster. Parameter \'bindnetaddr\' is not specified'
)
elif 'mcastaddr' not in configuration:
raise Exception(
'Failed to connect to Sheepdog cluster. Parameter \'mcastaddr\' is not specified'
)
elif 'mcastport' not in configuration:
raise Exception(
'Failed to connect to Sheepdog cluster. Parameter \'mcastport\' is not specified'
)
sr_uuid = get_sr_uuid_by_uri(dbg, uri)
create_chroot(dbg, sr_uuid)
set_chroot(dbg, sr_uuid)
write_corosync_conf(
dbg, sr_uuid,
gen_corosync_conf(dbg, configuration['bindnetaddr'],
configuration['mcastaddr'],
configuration['mcastport']))
start_sheepdog_gateway(dbg, get_sheep_port(dbg, sr_uuid), sr_uuid)
mkdir_p("%s/%s" % (SR_PATH_PREFIX, get_sr_uuid_by_uri(dbg, uri)))
call(dbg, [
'ln', '-s',
"%s/%s/var/lib/sheepdog/sock" %
(CHROOT_BASE, get_sr_uuid_by_uri(dbg, uri)),
"%s/%s/sock" % (SR_PATH_PREFIX, get_sr_uuid_by_uri(dbg, uri))
])
def lock(self, dbg, uri, timeout=10):
log.debug("%s: xcpng.libsbd.meta.MetaDBOpeations.lock: uri: %s" %
(dbg, uri))
start_time = time()
while True:
try:
dog_vdi_setattr(dbg,
get_sheep_port(dbg,
get_sr_uuid_by_uri(dbg, uri)),
'__meta__',
'locked',
'locked',
exclusive=True)
break
except Exception as e:
if time() - start_time >= timeout:
log.debug(
"%s: xcpng.libsbd.meta.MetaDBOpeations.lock: Failed to lock MetaDB for uri: %s"
% (dbg, uri))
raise Exception(e)
pass
def destroy(self, dbg, uri):
log.debug("%s: xcpng.libsbd.meta.MetaDBOpeations.destroy: uri: %s" %
(dbg, uri))
dog_vdi_delete(dbg, get_sheep_port(dbg, get_sr_uuid_by_uri(dbg, uri)),
'__meta__')
def get_phisical_utilization(self, dbg, uri):
volume_meta = self.MetadataHandler.get_vdi_meta(dbg, uri)
vdi_name = "%s%s" % (VDI_PREFIXES[get_vdi_type_by_uri(dbg, uri)], volume_meta[IMAGE_UUID_TAG])
vdi_info = dog_vdi_info(dbg, get_sheep_port(dbg, get_sr_uuid_by_uri(dbg, uri)), vdi_name)
log.debug("%s: get_phisical_utilization: uri: %s: utilization: %s" % (dbg, uri, vdi_info[4]))
return int(vdi_info[4])
def resize(self, dbg, uri, new_size):
volume_meta = self.MetadataHandler.get_vdi_meta(dbg, uri)
dog_vdi_resize(dbg,
get_sheep_port(dbg, get_sr_uuid_by_uri(dbg, uri)),
"%s%s" % (VDI_PREFIXES[get_vdi_type_by_uri(dbg, uri)], volume_meta[IMAGE_UUID_TAG]),
new_size)
def destroy(self, dbg, uri):
volume_meta = self.MetadataHandler.get_vdi_meta(dbg, uri)
dog_vdi_delete(dbg,
get_sheep_port(dbg, get_sr_uuid_by_uri(dbg, uri)),
"%s%s" % (VDI_PREFIXES[get_vdi_type_by_uri(dbg, uri)], volume_meta[IMAGE_UUID_TAG]))