---
storage/devices.py | 69 +++++++++++++++++++++++++++++++++++++++++----
storage/devicetree.py | 60 +++++++++++++++++++++++++++++++++++---
storage/formats/dmraid.py | 23 +++++++++++----
storage/udev.py | 10 ++++++-
4 files changed, 144 insertions(+), 18 deletions(-)
diff --git a/storage/devices.py b/storage/devices.py
index 3cc2599..63a0638 100644
--- a/storage/devices.py
+++ b/storage/devices.py
@@ -536,7 +536,6 @@ class StorageDevice(Device):
#for parent in self.parents:
# parent.removeChild()
-
class DiskDevice(StorageDevice):
""" A disk """
_type = "disk"
@@ -575,9 +574,11 @@ class DiskDevice(StorageDevice):
if not self.partedDevice:
raise DeviceError("cannot find parted device instance")
log.debug("creating parted Disk: %s" % self.path)
- self.partedDisk = parted.Disk(device=self.partedDevice)
- if not self.partedDisk:
- raise DeviceError("failed to create parted Disk")
+ try:
+ self.partedDisk = parted.Disk(device=self.partedDevice)
+ except:
+ # It is perfectly fine to have a device with no label.
+ self.partedDisk = None
self.probe()
@@ -1981,16 +1982,18 @@ class DMRaidArrayDevice(DMDevice):
_type = "dm-raid array"
_packages = ["dmraid"]
- def __init__(self, name, format=None, size=None,
+ def __init__(self, name, raidSet=None, level=None, format=None, size=None,
exists=None, parents=None, sysfsPath=''):
""" Create a DMRaidArrayDevice instance.
Arguments:
- name -- the device name (generally a device node's basename)
+ name -- the dmraid name also the device node's basename
Keyword Arguments:
+ raidSet -- the RaidSet object from block
+ level -- the type of dmraid
parents -- a list of the member devices
sysfsPath -- sysfs device path
size -- the device's size
@@ -2005,6 +2008,60 @@ class DMRaidArrayDevice(DMDevice):
parents=parents, sysfsPath=sysfsPath,
exists=exists)
+ self.formatClass = get_device_format_class("dmraidmember")
+ if not self.formatClass:
+ raise DeviceError("cannot find class for 'dmraidmember'")
+
+
+ self._raidSet = raidSet
+ self._level = level
+
+ @property
+ def raidSet(self):
+ return self._raidSet
+
+ @raidSet.setter
+ def raidSet(self, val):
+ # If we change self._raidSet, parents list will be invalid.
+ # Don't allow the change.
+ pass
+
+ def _addDevice(self, device):
+ """ Add a new member device to the array.
+
+ XXX This is for use when probing devices, not for modification
+ of arrays.
+ """
+ log_method_call(self, self.name, device=device.name, status=self.status)
+
+ if not self.exists:
+ raise DeviceError("device has not been created")
+
+ if not isinstance(device.format, self.formatClass):
+ raise ValueError("invalid device format for dmraid member")
+
+ if device in self.members:
+ raise ValueError("device is already a member of this array")
+
+ # we added it, so now set up the relations
+ self.devices.append(device)
+ device.addChild()
+
+ @property
+ def members(self):
+ return self.parents
+
+ @property
+ def devices(self):
+ """ Return a list of this array's member device instances. """
+ return self.parents
+
+ def activate(self, mknod=True):
+ self._raidSet.activate(mknod=mknod)
+
+ def deactivate(self):
+ self._raidSet.deactivate()
+
def probe(self):
""" Probe for any missing information about this device.
diff --git a/storage/devicetree.py b/storage/devicetree.py
index cdd41f0..6790c66 100644
--- a/storage/devicetree.py
+++ b/storage/devicetree.py
@@ -21,6 +21,7 @@
#
import os
+import block
from errors import *
from devices import *
@@ -561,6 +562,17 @@ class DeviceTree(object):
minor=udev_device_get_minor(info),
sysfsPath=sysfs_path)
self._addDevice(device)
+ elif udev_device_is_dmraid(info):
+ # This is just temporary as I need to differentiate between the
+ # device that has partitions and device that dont.
+ log.debug("%s is part of a dmraid" % name)
+ device = self.getDeviceByName(name)
+ if device is None:
+ device = StorageDevice(name,
+ major=udev_device_get_major(info),
+ minor=udev_device_get_minor(info),
+ sysfsPath=sysfs_path)
+ self._addDevice(device)
elif udev_device_is_disk(info):
log.debug("%s is a disk" % name)
device = self.getDeviceByName(name)
@@ -619,9 +631,8 @@ class DeviceTree(object):
# mdraid
kwargs["mdUuid"] = udev_device_get_md_uuid(info)
elif format_type == "isw_raid_member":
- # dmraid
- # TODO: collect name of containing raidset
- # TODO: implement dmraid member format class
+ # We dont add any new args because we intend to use the same
+ # block.RaidSet object for all the related devices.
pass
elif format_type == "LVM2_member":
# lvm
@@ -703,8 +714,47 @@ class DeviceTree(object):
parents=[device])
self._addDevice(md_array)
elif format.type == "dmraidmember":
- # look up or create the dmraid array
- pass
+ import pdb ; pdb.set_trace()
+ # Have we already created the DMRaidArrayDevice?
+ rs = block.getRaidSetFromRelatedMem(uuid=uuid, name=name, \
+ major = udev_device_get_major(info), \
+ minor = udev_device_get_minor(info))
+ if rs is None:
+ # FIXME: Should handle not finding a dmriad dev better
+ pass
+
+ dm_array = self.getDeviceByName(rs.name)
+ if dm_array is not None:
+ # Use the rs's object on the device.
+ device.format.raidmem = block.getMemFromRaidSet(dm_array, \
+ major = udev_device_get_major(info), \
+ minor = udev_device_get_minor(info), \
+ uuid=uuid, name=name)
+
+ # We add the new device.
+ dm_array._addDevice(device)
+
+ else:
+ # Use the rs's object on the device.
+ device.format.raidmem = block.getMemFromRaidSet(rs, \
+ major = udev_device_get_major(info), \
+ minor = udev_device_get_minor(info), \
+ uuid=uuid, name=name)
+
+ # Activate the Raid set.
+ rs.activate(mknod=True)
+
+ # For size. dmraid uses sector. use parted.
+ dm_size = parted.getDevice(rs.bdev.path).getSize(unit="MB")
+ # Create the DMRaidArray
+ dm_array = DMRaidArrayDevice(rs.name,
+ raidSet=rs,
+ level=rs.level,
+ size=dm_size,
+ exists=True,
+ parents=[device])
+
+ self._addDevice(dm_array)
elif format.type == "lvmpv":
# lookup/create the VG and LVs
try:
diff --git a/storage/formats/dmraid.py b/storage/formats/dmraid.py
index d458b45..ef80902 100644
--- a/storage/formats/dmraid.py
+++ b/storage/formats/dmraid.py
@@ -20,6 +20,8 @@
# Red Hat Author(s): Dave Lehman <dlehman@xxxxxxxxxx>
#
+import block
+
from iutil import log_method_call
#from dm import dm_node_from_name
from ..errors import *
@@ -65,25 +67,34 @@ class DMRaidMember(DeviceFormat):
device -- path to the underlying device
uuid -- this format's UUID
- raidSet -- the name of the raidset this member belongs to
exists -- indicates whether this is an existing format
+ On initialization this format is like DeviceFormat
+
"""
log_method_call(self, *args, **kwargs)
DeviceFormat.__init__(self, *args, **kwargs)
-
- self.raidSet = kwargs.get("raidSet")
+
+ # Initialize the attribute that will hold the block object.
+ self._raidmem = None
+
+ @property
+ def raidmem(self):
+ return self._raidmem
+
+ @raidmem.setter
+ def raidmem(self, raidmem):
+ self._raidmem = raidmem
def create(self, *args, **kwargs):
log_method_call(self, device=self.device,
type=self.type, status=self.status)
- raise DMRaidMemberError("creation of dmraid members is not supported")
+ raise DMRaidMemberError("creation of dmraid members is non-sense")
def destroy(self, *args, **kwargs):
log_method_call(self, device=self.device,
type=self.type, status=self.status)
- raise DMRaidMemberError("destruction of dmraid members is not supported")
-
+ raise DMRaidMemberError("destruction of dmraid members is non-sense")
register_device_format(DMRaidMember)
diff --git a/storage/udev.py b/storage/udev.py
index 4f83c2a..087f811 100644
--- a/storage/udev.py
+++ b/storage/udev.py
@@ -270,4 +270,12 @@ def udev_device_get_lv_sizes(info):
return [float(s) / 1024 for s in sizes]
-
+def udev_device_is_dmraid(info):
+ # Note that this function does *not* identify raid sets.
+ # Tests to see if device is parto of a dmraid set.
+ # dmraid and mdriad have the same ID_FS_USAGE string, ID_FS_TYPE has a
+ # string that describes the type of dmraid (isw_raid_member...), I don't
+ # want to maintain a list and mdraid's ID_FS_TYPE='linux_raid_member', so
+ # dmraid will be everything that is raid and not linux_raid_member
+ return info["ID_FS_USAGE"] == "raid" and \
+ info["ID_FS_TYPE"] != "linux_raid_member"
--
1.6.0.6
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