Looks good
On 04/14/2009 01:16 PM, David Lehman wrote:
---
storage/devices.py | 37 +++++++++++++++++++++++++++++++++----
1 files changed, 33 insertions(+), 4 deletions(-)
diff --git a/storage/devices.py b/storage/devices.py
index 89595d7..e51ae05 100644
--- a/storage/devices.py
+++ b/storage/devices.py
@@ -2070,6 +2070,9 @@ class MDRaidArrayDevice(StorageDevice):
self._totalDevices = numeric_type(totalDevices)
self._memberDevices = numeric_type(memberDevices)
self.sysfsPath = "/devices/virtual/block/%s" % name
+ self.chunkSize = 64.0 / 1024.0 # chunk size in MB
+ self.superBlockSize = 128.0 / 1024.0 # superblock size in MB
+
# FIXME: Bitmap is more complicated than this.
# It can be internal or external. External requires a filename.
@@ -2086,11 +2089,37 @@ class MDRaidArrayDevice(StorageDevice):
% (self.path, self.uuid))
@property
+ def smallestMember(self):
+ try:
+ smallest = sorted(self.devices, key=lambda d: d.size)[0]
+ except IndexError:
+ smallest = None
+ return smallest
+
+ @property
def size(self):
- size = None
- for device in self.devices:
- if size is None or device.size< size:
- size = device.size
+ if not self.devices:
+ return 0
+
+ size = 0
+ smallestMemberSize = self.smallestMember.size - self.superBlockSize
+ if not self.exists or not self.partedDevice:
+ if self.level == 0:
+ size = self.memberDevices * smallestMemberSize
+ size -= size % self.chunkSize
+ elif self.level == 1:
+ size = smallestMemberSize
+ elif self.level == 5:
+ size = (self.memberDevices - 1) * smallestMemberSize
+ size -= size % self.chunkSize
+ elif self.level == 6:
+ size = (self.memberDevices - 2) * smallestMemberSize
+ size -= size % self.chunkSize
+ elif self.level == 10:
+ size = (self.memberDevices / 2.0) * smallestMemberSize
+ size -= size % self.chunkSize
+ else:
+ size = self.partedDevice.getSize()
return size
--
David Cantrell <dcantrell@xxxxxxxxxx>
Red Hat / Honolulu, HI
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