def create(self):
""" Create the device. """
if self.exists:
raise DeviceError("device already exists", self.name)
try:
self.createParents()
self.setupParents()
disks = [disk.path for disk in self.devices]
spares = len(self.devices) - self.memberDevices
raid.mdcreate(self.path,
self.level,
disks,
spares,
metadataVer=self.createMetadataVer,
bitmap=self.createBitmap)
except Exception:
raise
else:
self.exists = True
# the array is automatically activated upon creation, but...
self.setup()
udev_settle()
self.updateSysfsPath()
info = udev_get_block_device(self.sysfsPath)
self.uuid = udev_device_get_md_uuid(info)
for member in self.devices:
member.mdUuid = self.uuid
spares = len(self.devices) - self.memberDevices
raid.mdcreate(self.path,
self.level,
disks,
spares,
metadataVer=self.createMetadataVer,
bitmap=self.createBitmap)
except Exception, msg:
raise RaidArrayError, msg
else:
self.exists = True
# the array is automatically activated upon creation, but...
self.setup()
udev_settle()
self.updateSysfsPath()
info = udev_get_block_device(self.sysfsPath)
self.uuid = udev_device_get_md_uuid(info)
for member in self.devices:
member.mdUuid = self.uuid
finally:
if w:
w.pop()
@property
def formatArgs(self):
formatArgs = []
if self.format.type == "ext2":
if self.level == raid.RAID5:
formatArgs = ['-R',
'stride=%d' % ((self.memberDevices - 1) * 16)]
if self.level == raid.RAID4:
spares = len(self.devices) - self.memberDevices
raid.mdcreate(self.path,
self.level,
disks,
spares,
metadataVer=self.createMetadataVer,
bitmap=self.createBitmap)
except Exception, msg:
raise RaidArrayError, msg
else:
self.exists = True
# the array is automatically activated upon creation, but...
self.setup()
udev_settle()
self.updateSysfsPath()
info = udev_get_block_device(self.sysfsPath)
self.uuid = udev_device_get_md_uuid(info)
for member in self.devices:
member.mdUuid = self.uuid
finally:
if w:
w.pop()
@property
def formatArgs(self):
formatArgs = []
if self.format.type == "ext2":
if self.level == raid.RAID5:
formatArgs = [
'-R', 'stride=%d' % ((self.memberDevices - 1) * 16)
]