protected Vdev(NvList config)
{
this.Guid = config.Get<ulong>("guid");
this.ID = config.Get<ulong>("id");
MetaSlabArray = config.GetOptional<ulong>("metaslab_array");
MetaSlabShift = config.GetOptional<ulong>("metaslab_shift");
AShift = config.GetOptional<ulong>("ashift");
ASize = config.GetOptional<ulong>("asize");
}
protected Vdev(NvList config)
{
this.Guid = config.Get <ulong>("guid");
this.ID = config.Get <ulong>("id");
MetaSlabArray = config.GetOptional <ulong>("metaslab_array");
MetaSlabShift = config.GetOptional <ulong>("metaslab_shift");
AShift = config.GetOptional <ulong>("ashift");
ASize = config.GetOptional <ulong>("asize");
}
public RaidzVdev(NvList config, Dictionary<ulong, LeafVdevInfo> leafs)
: base(config)
{
this.mVdevs = config.Get<NvList[]>("children")
.Select(child => Vdev.Create(child, leafs))
.OrderBy(child => child.ID)
.ToArray();
mNparity = config.Get<UInt64>("nparity");
mUnitShift = (int)config.Get<UInt64>("ashift");
}
readonly int mUnitShift; //ashift
public RaidzVdev(NvList config, Dictionary<ulong, LeafVdevInfo> leafs)
: base(config)
{
this.mVdevs = config.Get<NvList[]>("children")
.Select(child => Vdev.Create(child, leafs))
.OrderBy(child => child.ID)
.ToArray();
mNparity = config.Get<UInt64>("nparity");
mUnitShift = (int)config.Get<UInt64>("ashift");
}
public MirrorVdev(NvList config, Dictionary <ulong, LeafVdevInfo> leafs)
: base(config)
{
this.mVdevs = config.Get <NvList[]>("children")
.Select(child => Vdev.Create(child, leafs))
.ToArray();
}
public MirrorVdev(NvList config, Dictionary<ulong, LeafVdevInfo> leafs)
: base(config)
{
this.mVdevs = config.Get<NvList[]>("children")
.Select(child => Vdev.Create(child, leafs))
.ToArray();
}
public static Vdev Create(NvList config, Dictionary<ulong, LeafVdevInfo> leafs)
{
var type = config.Get<string>("type");
switch (type)
{
case "mirror":
return new MirrorVdev(config, leafs);
case "disk":
case "file":
return new HddVdev(config, leafs[config.Get<ulong>("guid")]);
case "raidz":
return new RaidzVdev(config, leafs);
default:
throw new NotSupportedException("Unknown type: " + type);
}
throw new NotImplementedException();
}
public LeafVdevInfo(HardDisk hdd)
{
this.HDD = hdd;
var rentedBytes = Program.RentBytes(VDEV_PHYS_SIZE);
try
{
if (!hdd.ReadLabelBytes(rentedBytes, VDEV_SKIP_SIZE))
throw new Exception("Invalid checksum on lable config data!");
Config = new NvList(rentedBytes);
}
finally
{
Program.ReturnBytes(rentedBytes);
rentedBytes = default(ArraySegment<byte>);
}
//figure out how big the uber blocks are
var vdevTree = Config.Get<NvList>("vdev_tree");
var ubShift = (int)vdevTree.Get<ulong>("ashift");
ubShift = Math.Max(ubShift, UBERBLOCK_SHIFT);
ubShift = Math.Min(ubShift, MAX_UBERBLOCK_SHIFT);
var ubSize = 1 << ubShift;
var ubCount = VDEV_UBERBLOCK_RING >> ubShift;
List<uberblock_t> blocks = new List<uberblock_t>();
var ubBytes = Program.RentBytes(ubSize);
try
{
for (long i = 0; i < ubCount; i++)
{
var offset = VDEV_SKIP_SIZE + VDEV_PHYS_SIZE + ubSize * i;
if (!hdd.ReadLabelBytes(ubBytes, offset))
continue;
uberblock_t b = Program.ToStruct<uberblock_t>(ubBytes.Array, ubBytes.Offset);
if (b.Magic == uberblock_t.UbMagic)
{
blocks.Add(b);
}
}
}
finally
{
Program.ReturnBytes(ubBytes);
ubBytes = default(ArraySegment<byte>);
}
this.Uberblock = blocks.OrderByDescending(u => u.Txg).ThenByDescending(u => u.TimeStamp).First();
const int VDevLableSizeStart = 4 << 20;
const int VDevLableSizeEnd = 512 << 10;
hdd = OffsetHardDisk.Create(hdd, VDevLableSizeStart, hdd.Length - VDevLableSizeStart - VDevLableSizeEnd);
this.HDD = hdd;
}
public static Vdev Create(NvList config, Dictionary <ulong, LeafVdevInfo> leafs)
{
var type = config.Get <string>("type");
switch (type)
{
case "mirror":
return(new MirrorVdev(config, leafs));
case "disk":
case "file":
return(new HddVdev(config, leafs[config.Get <ulong>("guid")]));
case "raidz":
return(new RaidzVdev(config, leafs));
default:
throw new NotSupportedException("Unknown type: " + type);
}
throw new NotImplementedException();
}