def md_present(mdname):
"""Check if mdname is present in /proc/mdstat"""
if not mdname:
raise ValueError('md_present requires a valid md name')
try:
mdstat = util.load_file('/proc/mdstat')
except IOError as e:
if util.is_file_not_found_exc(e):
LOG.warning('Failed to read /proc/mdstat; '
'md modules might not be loaded')
return False
else:
raise e
md_kname = dev_short(mdname)
# Find lines like:
# md10 : active raid1 vdc1[1] vda2[0]
present = [
line for line in mdstat.splitlines()
if line.split(":")[0].rstrip() == md_kname
]
if len(present) > 0:
return True
return False
def test_md_sysfs_attr(self, mock_isfile, mock_sysblock):
mdname = "/dev/md0"
attr_name = 'array_state'
sysfs_path = '/sys/class/block/{}/md/{}'.format(dev_short(mdname),
attr_name)
mock_sysblock.side_effect = ['/sys/class/block/md0/md']
mock_isfile.side_effect = [True]
mdadm.md_sysfs_attr(mdname, attr_name)
self.mock_util.load_file.assert_called_with(sysfs_path)
mock_sysblock.assert_called_with(mdname, 'md')
mock_isfile.assert_called_with(sysfs_path)
def md_device_key_dev(devname):
if not devname:
raise ValueError('Missing parameter devname')
return 'MD_DEVICE_' + dev_short(devname) + '_DEV'
