def destroy(mpoint, force=False):
if not os.path.ismount(mpoint):
raise StorageError('Directory %s is not valid mount point' % mpoint)
cmd = [UMOUNT_EXEC, mpoint]
if force:
cmd.insert(1, '-f')
system(tuple(cmd), error_text="Can't destroy ramdisk.")
def findname():
""" Return unused md device name """
for i in range(1000):
dev = '/dev/md%s' % i
if not os.path.exists(dev):
return dev
raise StorageError("No unused raid device name left")
def mdfind(*devices):
""" Return md name that contains passed devices """
devices_base = map(os.path.basename, devices)
with open('/proc/mdstat') as f:
stat = f.readlines()
for line in stat:
if all(map(lambda x: x in line, devices_base)):
array = '/dev/%s' % line.split()[0]
md_info = detail(array)
md_devices = md_info['devices'].keys()
md_devices = map(os.path.realpath, md_devices)
if sorted(md_devices) == sorted(devices):
return array
else:
raise StorageError("Devices aren't part of any array: %s" %
', '.join(devices))
def side_eff(device):
if device == '/dev/md0':
return md0_details
else:
raise StorageError('Unknown device')