def get(device_path, attribute=None):
"""Get Information about device
Returns dictionary of properties
"""
cmd = "tune2fs -l %s" % device_path
(error, stdoutdata, stderrdata) = utils.run_syscmd(cmd)
if error > 0:
raise Tune2fsException(stderrdata.strip())
data = {}
for d in stdoutdata.strip().split('\n'):
try:
(key, value) = d.split(':', 1)
except ValueError:
continue
data[key] = value.strip()
if attribute:
if attribute in data:
data = data[attribute]
else:
data = None
return data
def get(device_path=None, by='NAME'):
"""
Get information about a device
Returns a dict of all attributes of a device
"""
if device_path is None:
devices = _get_devices(by=by)
return devices
lsblk_options = ','.join(LSBLK_ATTR)
cmd = "lsblk -b -d -i -n -P -o %s %s" % (lsblk_options, device_path)
(error, stdoutdata, stderrdata) = utils.run_syscmd(cmd)
if error > 0:
raise ListBlockDeviceException(stderrdata.strip())
data = {}
for d in shlex.split(stdoutdata.strip()):
(key, value) = d.split('=', 1)
if key in lsblk_options:
value = value.strip()
data[key] = value
return data
def is_preboot():
"""Check if system is running in pre-boot"""
cmd = "uname -n"
(error, stdoutdata, stderrdata) = utils.run_syscmd(cmd)
if error > 0:
return True
nodename = stdoutdata.strip()
if nodename == "(none)":
return True
return False
def dd(ifdev, ofdev, bs=None, count=None):
"""
Run dd on ifdev and ofdev
Returns (error, stdoutdata, stderrdata)
"""
if bs:
BS_OPTION = "bs=%s" % bs
else:
BS_OPTION = ""
if count:
COUNT_OPTION = "count %s" % count
else:
COUNT_OPTION = ""
cmd = "dd if=%s of=%s %s %s" % (ifdev, ofdev, BS_OPTION, COUNT_OPTION)
print cmd
(error, stdoutdata, stderrdata) = utils.run_syscmd(cmd)
return (error, stdoutdata, stderrdata)
def _get_devices(by='NAME'):
"""Get all devices by NAME, LABEL, UUID, or KNAME"""
devices = []
if by not in ['NAME', 'LABEL', 'UUID', 'KNAME']:
raise ListBlockDeviceException("Invalid type")
cmd = "lsblk -b -a -l -i -n -o %s" % by
(error, stdoutdata, stderrdata) = utils.run_syscmd(cmd)
if error > 0:
raise ListBlockDeviceException(stderrdata.strip())
for d in stdoutdata.strip().split('\n'):
d = d.strip()
if d == '':
continue
device_name = d.split()[0]
d = d.split()[0]
d_path1 = d_path2 = ''
if by == 'UUID':
d_path1 = "/dev/disk/by-uuid/%s" % d
elif by == 'LABEL':
d_path1 = "/dev/disk/by-label/%s" % d
elif by == 'NAME':
d_path1 = "/dev/%s" % d
d_path2 = "/dev/mapper/%s" % d
elif by == 'KNAME':
d_path1 = "/dev/%s" % d
d_path2 = "/dev/mapper/%s" % d
else:
continue
if os.path.exists(d_path1):
devices.append(d_path1)
elif os.path.exists(d_path2):
devices.append(d_path2)
return devices