/// <summary>
/// Generates the partitioning layout used for the client when restoring an image.
/// </summary>
public ClientPartition GenerateClientSchema()
{
var activeCounter = _hdToGet;
HdNumberToGet = _hdToGet;
//Look for first active hd
if (!_imageSchema.HardDrives[HdNumberToGet].Active)
{
while (activeCounter <= _imageSchema.HardDrives.Count())
{
if (_imageSchema.HardDrives[activeCounter - 1].Active)
{
HdNumberToGet = activeCounter - 1;
}
activeCounter++;
}
}
LbsByte = Convert.ToInt32(_imageSchema.HardDrives[HdNumberToGet].Lbs); //logical block size in bytes
NewHdBlk = Convert.ToInt64(_newHdSize) / LbsByte; //size of client hard drive in block
//Find the Boot partition
if (_imageSchema.HardDrives[HdNumberToGet].Boot.Length > 0)
{
BootPart = _imageSchema.HardDrives[HdNumberToGet].Boot.Substring(_imageSchema.HardDrives[HdNumberToGet].Boot.Length - 1, 1);
}
if (!PrimaryAndExtendedPartitionLayout())
{
return(null);
}
if (ExtendedPartitionHelper.HasLogical)
{
if (!LogicalPartitionLayout())
{
return(null);
}
}
if (VolumeGroupHelpers.Any())
{
if (!LogicalVolumeLayout())
{
return(null);
}
}
//Order partitions based of block start
PrimaryAndExtendedPartitions =
PrimaryAndExtendedPartitions.OrderBy(part => part.Start, new CustomComparer()).ToList();
LogicalPartitions = LogicalPartitions.OrderBy(part => part.Start, new CustomComparer()).ToList();
return(this);
}
private bool LogicalPartitionLayout()
{
// Try to resize logical to fit inside newly created extended
var percentCounter = -.1;
var upSizeLock = new Dictionary <string, long>();
var logicalPartLayoutVerified = false;
while (!logicalPartLayoutVerified)
{
percentCounter += .1;
var isError = false;
LogicalPartitions.Clear();
double totalExtendedPercentage = 0;
var partCounter = -1;
foreach (var part in _imageSchema.HardDrives[HdNumberToGet].Partitions)
{
partCounter++;
if (part.Type.ToLower() != "logical")
{
continue;
}
var clientPartition = new ClientPartition
{
IsBoot = BootPart == part.Number,
Number = part.Number,
Start = part.Start,
Type = part.Type,
FsId = part.FsId,
Uuid = part.Uuid,
Guid = part.Guid,
FsType = part.FsType
};
var logicalPartitionHelper = new ServiceClientPartition(_imageProfile).Partition(HdNumberToGet,
partCounter, _newHdSize);
var percentOfExtendedForThisPartition = (double)logicalPartitionHelper.MinSizeBlk /
ExtendedPartitionHelper.AgreedSizeBlk;
var tmpClientPartitionSizeBlk = logicalPartitionHelper.MinSizeBlk;
if (upSizeLock.ContainsKey(part.Number))
{
tmpClientPartitionSizeBlk = upSizeLock[part.Number];
}
else
{
if (logicalPartitionHelper.IsDynamicSize)
{
clientPartition.SizeIsDynamic = true;
var percentOfOrigDrive = Convert.ToInt64(part.Size) /
(double)
Convert.ToInt64(_imageSchema.HardDrives[HdNumberToGet].Size);
if (Convert.ToInt64(NewHdBlk * percentOfOrigDrive) < logicalPartitionHelper.MinSizeBlk)
{
//This will never work because each loop only gets smaller
tmpClientPartitionSizeBlk =
Convert.ToInt64(NewHdBlk * (percentOfOrigDrive + percentCounter / 100));
if (logicalPartitionHelper.MinSizeBlk < tmpClientPartitionSizeBlk)
{
upSizeLock.Add(part.Number, tmpClientPartitionSizeBlk);
}
}
else
{
tmpClientPartitionSizeBlk = percentOfOrigDrive - percentCounter / 100 <= 0
? Convert.ToInt64(NewHdBlk * percentOfOrigDrive)
: Convert.ToInt64(NewHdBlk * (percentOfOrigDrive - percentCounter / 100));
percentOfExtendedForThisPartition = (double)tmpClientPartitionSizeBlk /
ExtendedPartitionHelper.AgreedSizeBlk;
}
}
}
if (logicalPartitionHelper.MinSizeBlk > tmpClientPartitionSizeBlk)
{
isError = true;
break;
}
totalExtendedPercentage += percentOfExtendedForThisPartition;
clientPartition.Size = tmpClientPartitionSizeBlk;
LogicalPartitions.Add(clientPartition);
if (logicalPartitionHelper.PartitionHasVolumeGroup)
{
logicalPartitionHelper.VolumeGroupHelper.AgreedPvSizeBlk = tmpClientPartitionSizeBlk;
VolumeGroupHelpers.Add(logicalPartitionHelper.VolumeGroupHelper);
}
}
//Could not determine a partition layout that works with this hard drive
if (isError && percentCounter > 99)
{
log.Error(JsonConvert.SerializeObject(PrimaryAndExtendedPartitions));
log.Error(JsonConvert.SerializeObject(LogicalPartitions));
return(false);
}
//This partition size doesn't work, continuation of break from earlier
if (isError)
{
continue;
}
if (totalExtendedPercentage <= 1)
{
long totalAllocatedBlk = 0;
var dynamicPartitionCount = 0;
//If totalPercentage is too far below 1 try to increase size of available resizable partitions
if (totalExtendedPercentage < .98)
{
foreach (var partition in LogicalPartitions)
{
totalAllocatedBlk += Convert.ToInt64(partition.Size);
if (partition.SizeIsDynamic)
{
dynamicPartitionCount++;
}
}
var totalUnallocated = ExtendedPartitionHelper.AgreedSizeBlk - totalAllocatedBlk;
if (dynamicPartitionCount > 0)
{
foreach (
var partition in LogicalPartitions.Where(partition => partition.SizeIsDynamic))
{
partition.Size =
partition.Size + totalUnallocated / dynamicPartitionCount;
}
}
}
logicalPartLayoutVerified = true;
}
//Theoretically should never hit this, but added to prevent infinite loop
if (percentCounter > 100)
{
return(false);
}
}
return(true);
}
