def attach_volume(vol_id, connection_info):
"""
Attach volume with os-brick.
"""
if os_brick is None:
raise se.ManagedVolumeNotSupported("Cannot import os_brick.initiator")
db = managedvolumedb.open()
with closing(db):
_add_volume(db, vol_id, connection_info)
log.debug("Starting attach volume %s connection_info=%s", vol_id,
connection_info)
try:
attachment = run_helper("attach", connection_info)
try:
path = _resolve_path(vol_id, connection_info, attachment)
db.update_volume(vol_id,
path=path,
attachment=attachment,
multipath_id=attachment.get("multipath_id"))
_invalidate_lvm_filter(attachment)
except:
_silent_detach(connection_info, attachment)
raise
except:
_silent_remove(db, vol_id)
raise
log.debug("Attached volume %s attachment=%s", vol_id, attachment)
return {"result": {'attachment': attachment, 'path': path}}
def connector_info():
"""
Get connector information from os-brick.
If not running as root, use supervdsm to invoke this function as root.
"""
if os_brick is None:
raise se.ManagedVolumeNotSupported("Cannot import os_brick.initiator")
log.debug("Starting get connector_info")
return run_helper("connector_info")
def detach_volume(vol_id):
"""
Detach volume with os-brick.
"""
if os_brick is None:
raise se.ManagedVolumeNotSupported("Cannot import os_brick.initiator")
db = managedvolumedb.open()
with closing(db):
try:
vol_info = db.get_volume(vol_id)
except managedvolumedb.NotFound:
return
log.debug("Starting detach volume %s vol_info=%s", vol_id, vol_info)
if "path" in vol_info and os.path.exists(vol_info["path"]):
run_helper("detach", vol_info)
db.remove_volume(vol_id)
def wrapper(*args, **kwargs):
if os_brick is None:
raise se.ManagedVolumeNotSupported("Cannot import os_brick")
return func(*args, **kwargs)