def dm_node_from_name(name):
dm_node = block.getDmNodeFromName(name)
if dm_node is not None:
return dm_node
devnum = yali.util.run_batch("dmsetup", ["info", "--columns",
"--noheadings", "-o", "devno",name])[1]
(major, sep, minor) = devnum.strip().partition(":")
if not sep:
raise DeviceMapperError("dm device does not exist")
dm_node = "dm-%d" % int(minor)
ctx.logger.debug("dm_node_from_name(%s) returning '%s'" % (name, dm_node))
return dm_node
def dm_node_from_name(name):
dm_node = block.getDmNodeFromName(name)
if dm_node is not None:
return dm_node
devnum = yali.util.run_batch("dmsetup", ["info", "--columns",
"--noheadings", "-o", "devno",name])[1]
(major, sep, minor) = devnum.strip().partition(":")
if not sep:
raise DeviceMapperError("dm device does not exist")
dm_node = "dm-%d" % int(minor)
ctx.logger.debug("dm_node_from_name(%s) returning '%s'" % (name, dm_node))
return dm_node
def dm_node_from_name(map_name):
dm_node = block.getDmNodeFromName(map_name)
if dm_node is not None:
return dm_node
devnum = iutil.execWithCapture(
"dmsetup",
["info", "--columns", "--noheadings", "-o", "devno", map_name],
stderr="/dev/tty5")
(major, sep, minor) = devnum.strip().partition(":")
if not sep:
raise DMError("dm device does not exist")
dm_node = "dm-%d" % int(minor)
log.debug("dm_node_from_name(%s) returning '%s'" % (map_name, dm_node))
return dm_node
def dm_node_from_name(map_name):
dm_node = block.getDmNodeFromName(map_name)
if dm_node is not None:
return dm_node
devnum = iutil.execWithCapture("dmsetup",
["info", "--columns",
"--noheadings",
"-o", "devno",
map_name],
stderr="/dev/tty5")
(major, sep, minor) = devnum.strip().partition(":")
if not sep:
raise DMError("dm device does not exist")
dm_node = "dm-%d" % int(minor)
log.debug("dm_node_from_name(%s) returning '%s'" % (map_name, dm_node))
return dm_node
def dm_node_from_name(map_name):
named_path = "/dev/mapper/%s" % map_name
try:
# /dev/mapper/ nodes are usually symlinks to /dev/dm-N
node = os.path.basename(os.readlink(named_path))
except OSError:
try:
# dm devices' names are based on the block device minor
st = os.stat(named_path)
minor = os.minor(st.st_rdev)
node = "dm-%d" % minor
except OSError:
# try pyblock
node = block.getDmNodeFromName(map_name)
if not node:
raise DMError("dm_node_from_name(%s) has failed." % node)
return node
def dm_node_from_name(map_name):
named_path = "/dev/mapper/%s" % map_name
try:
# /dev/mapper/ nodes are usually symlinks to /dev/dm-N
node = os.path.basename(os.readlink(named_path))
except OSError:
try:
# dm devices' names are based on the block device minor
st = os.stat(named_path)
minor = os.minor(st.st_rdev)
node = "dm-%d" % minor
except OSError:
# try pyblock
node = block.getDmNodeFromName(map_name)
if not node:
raise DMError("dm_node_from_name(%s) has failed." % node)
return node
