The original value of each device's format attribute is stored after
the device is probed/scanned/detected. An optional/keyword argument,
orig, is added to StorageDevice.setup so that the caller can specify
whether to set up the device using the current/new formatting or the
original formatting. StorageDevice.destroy methods automatically use
the original formatting.
---
storage/devices.py | 128 ++++++++++++++++++++++++++++++-------------------
storage/devicetree.py | 1 +
2 files changed, 80 insertions(+), 49 deletions(-)
diff --git a/storage/devices.py b/storage/devices.py
index 69aa8bf..f6cf0f2 100644
--- a/storage/devices.py
+++ b/storage/devices.py
@@ -302,11 +302,11 @@ class Device(object):
""" Destroy the device. """
raise NotImplementedError("destroy method not defined for Device")
- def setupParents(self):
+ def setupParents(self, orig=False):
""" Run setup method of all parent devices. """
- log_method_call(self, name=self.name, kids=self.kids)
+ log_method_call(self, name=self.name, orig=orig, kids=self.kids)
for parent in self.parents:
- parent.setup()
+ parent.setup(orig=orig)
def teardownParents(self, recursive=None):
""" Run teardown method of all parent devices. """
@@ -473,6 +473,7 @@ class StorageDevice(Device):
self.protected = False
self.format = format
+ self.originalFormat = self.format
self.fstabComment = ""
self._targetSize = self._size
@@ -527,12 +528,12 @@ class StorageDevice(Device):
" major = %(major)s minor = %(minor)r exists = %(exists)s\n"
" sysfs path = %(sysfs)s partedDevice = %(partedDevice)r\n"
" target size = %(targetSize)s path = %(path)s\n"
- " format args = %(formatArgs)s" %
+ " format args = %(formatArgs)s originalFormat = %(origFmt)s" %
{"uuid": self.uuid, "format": self.format, "size": self.size,
"major": self.major, "minor": self.minor, "exists": self.exists,
"sysfs": self.sysfsPath, "partedDevice": self.partedDevice,
"targetSize": self.targetSize, "path": self.path,
- "formatArgs": self.formatArgs})
+ "formatArgs": self.formatArgs, "origFmt": self.originalFormat})
return s
@property
@@ -599,15 +600,18 @@ class StorageDevice(Device):
"""
raise NotImplementedError("resize method not defined for StorageDevice")
- def setup(self, intf=None):
+ def setup(self, intf=None, orig=False):
""" Open, or set up, a device. """
- log_method_call(self, self.name, status=self.status)
+ log_method_call(self, self.name, orig=orig, status=self.status)
if not self.exists:
raise DeviceError("device has not been created", self.name)
- self.setupParents()
+ self.setupParents(orig=orig)
for parent in self.parents:
- parent.format.setup()
+ if orig:
+ parent.originalFormat.setup()
+ else:
+ parent.format.setup()
def teardown(self, recursive=None):
""" Close, or tear down, a device. """
@@ -615,8 +619,11 @@ class StorageDevice(Device):
if not self.exists and not recursive:
raise DeviceError("device has not been created", self.name)
- if self.status and self.format.exists:
- self.format.teardown()
+ if self.status:
+ if self.originalFormat.exists:
+ self.originalFormat.teardown()
+ if self.format.exists:
+ self.format.teardown()
udev_settle()
if recursive:
@@ -844,9 +851,9 @@ class DiskDevice(StorageDevice):
self.teardown()
- def setup(self, intf=None):
+ def setup(self, intf=None, orig=False):
""" Open, or set up, a device. """
- log_method_call(self, self.name, status=self.status)
+ log_method_call(self, self.name, orig=orig, status=self.status)
if not os.path.exists(self.path):
raise DeviceError("device does not exist", self.name)
@@ -1330,7 +1337,7 @@ class PartitionDevice(StorageDevice):
if not self.isleaf:
raise DeviceError("Cannot destroy non-leaf device", self.name)
- self.setupParents()
+ self.setupParents(orig=True)
self.disk.format.removePartition(self.partedPartition)
self.disk.format.commit()
@@ -1343,6 +1350,8 @@ class PartitionDevice(StorageDevice):
raise DeviceError("device has not been created", self.name)
if self.status:
+ if self.originalFormat.exists:
+ self.originalFormat.teardown()
if self.format.exists:
self.format.teardown()
if self.parents[0].type == 'dm-multipath':
@@ -1617,14 +1626,17 @@ class LUKSDevice(DMCryptDevice):
self.exists = True
self.setup()
- def setup(self, intf=None):
+ def setup(self, intf=None, orig=False):
""" Open, or set up, a device. """
- log_method_call(self, self.name, status=self.status)
+ log_method_call(self, self.name, orig=orig, status=self.status)
if not self.exists:
raise DeviceError("device has not been created", self.name)
- self.slave.setup()
- self.slave.format.setup()
+ self.slave.setup(orig=orig)
+ if orig:
+ self.slave.originalFormat.setup()
+ else:
+ self.slave.format.setup()
udev_settle()
# we always probe since the device may not be set up when we want
@@ -1637,8 +1649,15 @@ class LUKSDevice(DMCryptDevice):
if not self.exists and not recursive:
raise DeviceError("device has not been created", self.name)
- if self.status and self.format.exists:
- self.format.teardown()
+ if self.status:
+ if self.originalFormat.exists:
+ self.originalFormat.teardown()
+ if self.format.exists:
+ self.format.teardown()
+ udev_settle()
+
+ if self.slave.originalFormat.exists:
+ self.slave.originalFormat.teardown()
udev_settle()
if self.slave.format.exists:
@@ -1864,13 +1883,13 @@ class LVMVolumeGroupDevice(DMDevice):
device.removeChild()
- def setup(self, intf=None):
+ def setup(self, intf=None, orig=False):
""" Open, or set up, a device.
XXX we don't do anything like "vgchange -ay" because we don't
want all of the LVs activated, just the VG itself.
"""
- log_method_call(self, self.name, status=self.status)
+ log_method_call(self, self.name, orig=orig, status=self.status)
if not self.exists:
raise DeviceError("device has not been created", self.name)
@@ -1880,7 +1899,7 @@ class LVMVolumeGroupDevice(DMDevice):
if len(self.parents) < self.pvCount:
raise DeviceError("cannot activate VG with missing PV(s)", self.name)
- self.setupParents()
+ self.setupParents(orig=orig)
def teardown(self, recursive=None):
""" Close, or tear down, a device. """
@@ -1929,7 +1948,7 @@ class LVMVolumeGroupDevice(DMDevice):
raise DeviceError("device has not been created", self.name)
# set up the pvs since lvm needs access to them to do the vgremove
- self.setupParents()
+ self.setupParents(orig=True)
# this sometimes fails for some reason.
try:
@@ -2256,16 +2275,16 @@ class LVMLogicalVolumeDevice(DMDevice):
""" Test if vg exits and if it has all pvs. """
return self.vg.complete
- def setup(self, intf=None):
+ def setup(self, intf=None, orig=False):
""" Open, or set up, a device. """
- log_method_call(self, self.name, status=self.status)
+ log_method_call(self, self.name, orig=orig, status=self.status)
if not self.exists:
raise DeviceError("device has not been created", self.name)
if self.status:
return
- self.vg.setup()
+ self.vg.setup(orig=orig)
lvm.lvactivate(self.vg.name, self._name)
# we always probe since the device may not be set up when we want
@@ -2278,8 +2297,11 @@ class LVMLogicalVolumeDevice(DMDevice):
if not self.exists and not recursive:
raise DeviceError("device has not been created", self.name)
- if self.status and self.format.exists:
- self.format.teardown()
+ if self.status:
+ if self.originalFormat.exists:
+ self.originalFormat.teardown()
+ if self.format.exists:
+ self.format.teardown()
udev_settle()
if self.status:
@@ -2330,7 +2352,7 @@ class LVMLogicalVolumeDevice(DMDevice):
self.teardown()
# set up the vg's pvs so lvm can remove the lv
- self.vg.setupParents()
+ self.vg.setupParents(orig=True)
lvm.lvremove(self.vg.name, self._name)
self.exists = False
@@ -2341,8 +2363,10 @@ class LVMLogicalVolumeDevice(DMDevice):
raise DeviceError("device has not been created", self.name)
# Setup VG parents (in case they are dmraid partitions for example)
- self.vg.setupParents()
+ self.vg.setupParents(orig=True)
+ if self.originalFormat.exists:
+ self.originalFormat.teardown()
if self.format.exists:
self.format.teardown()
@@ -2705,9 +2729,9 @@ class MDRaidArrayDevice(StorageDevice):
""" Return a list of this array's member device instances. """
return self.parents
- def setup(self, intf=None):
+ def setup(self, intf=None, orig=False):
""" Open, or set up, a device. """
- log_method_call(self, self.name, status=self.status)
+ log_method_call(self, self.name, orig=orig, status=self.status)
if not self.exists:
raise DeviceError("device has not been created", self.name)
@@ -2716,7 +2740,7 @@ class MDRaidArrayDevice(StorageDevice):
disks = []
for member in self.devices:
- member.setup()
+ member.setup(orig=orig)
disks.append(member.path)
update_super_minor = True
@@ -2741,8 +2765,11 @@ class MDRaidArrayDevice(StorageDevice):
if not self.exists and not recursive:
raise DeviceError("device has not been created", self.name)
- if self.status and self.format.exists:
- self.format.teardown()
+ if self.status:
+ if self.originalFormat.exists:
+ self.originalFormat.teardown()
+ if self.format.exists:
+ self.format.teardown()
udev_settle()
# Since BIOS RAID sets (containers in mdraid terminology) never change
@@ -2947,10 +2974,10 @@ class DMRaidArrayDevice(DMDevice):
self._raidSet.activate(mknod=True)
udev_settle()
- def setup(self, intf=None):
+ def setup(self, intf=None, orig=False):
""" Open, or set up, a device. """
- log_method_call(self, self.name, status=self.status)
- StorageDevice.setup(self, intf=intf)
+ log_method_call(self, self.name, orig=orig, status=self.status)
+ StorageDevice.setup(self, intf=intf, orig=orig)
self.activate()
def teardown(self, recursive=None):
@@ -3103,14 +3130,14 @@ class MultipathDevice(DMDevice):
if recursive:
self.teardownParents(recursive=recursive)
- def setup(self, intf=None):
+ def setup(self, intf=None, orig=False):
""" Open, or set up, a device. """
- log_method_call(self, self.name, status=self.status)
+ log_method_call(self, self.name, orig=orig, status=self.status)
if self.status:
return
- StorageDevice.setup(self, intf=intf)
+ StorageDevice.setup(self, intf=intf, orig=orig)
udev_settle()
rc = iutil.execWithRedirect("multipath",
[self.name],
@@ -3152,9 +3179,9 @@ class NoDevice(StorageDevice):
""" Probe for any missing information about this device. """
log_method_call(self, self.name, status=self.status)
- def setup(self, intf=None):
+ def setup(self, intf=None, orig=False):
""" Open, or set up, a device. """
- log_method_call(self, self.name, status=self.status)
+ log_method_call(self, self.name, orig=orig, status=self.status)
def teardown(self, recursive=False):
""" Close, or tear down, a device. """
@@ -3226,13 +3253,16 @@ class FileDevice(StorageDevice):
return os.path.normpath("%s/%s" % (root, path))
- def setup(self):
- StorageDevice.setup(self)
+ def setup(self, intf=None, orig=False):
+ StorageDevice.setup(self, orig=orig)
if self.format and self.format.exists and not self.format.status:
self.format.device = self.path
for parent in self.parents:
- parent.format.setup()
+ if orig:
+ parent.originalFormat.setup()
+ else:
+ parent.format.setup()
def teardown(self, recursive=None):
StorageDevice.teardown(self)
@@ -3475,9 +3505,9 @@ class NFSDevice(StorageDevice, NetworkStorageDevice):
""" Device node representing this device. """
return self.name
- def setup(self, intf=None):
+ def setup(self, intf=None, orig=False):
""" Open, or set up, a device. """
- log_method_call(self, self.name, status=self.status)
+ log_method_call(self, self.name, orig=orig, status=self.status)
def teardown(self, recursive=None):
""" Close, or tear down, a device. """
diff --git a/storage/devicetree.py b/storage/devicetree.py
index e0892d9..11ac6eb 100644
--- a/storage/devicetree.py
+++ b/storage/devicetree.py
@@ -1279,6 +1279,7 @@ class DeviceTree(object):
log.debug("got device: %s" % device)
if device.format.type:
log.debug("got format: %s" % device.format)
+ device.originalFormat = device.format
def handleUdevDiskLabelFormat(self, info, device):
log_method_call(self, device=device.name)
--
1.6.6
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