public void LsFixedBlockChangedBlock(string snapmoref, int diskid, string timestamp, long blocksizekb)
{
ManagedObjectReference snapmor = new ManagedObjectReference();
snapmor.type = "VirtualMachineSnapshot";
snapmor.Value = snapmoref;
ManagedObjectReference vmref = null;
try
{
vmref = cb.getServiceUtil().GetMoRefProp(snapmor, "vm");
}
catch
{
Console.WriteLine("Could not find snapshot");
}
if (vmref != null)
{
var res = vimservice.QueryChangedDiskAreas(vmref, snapmor, diskid, 0, timestamp);
if (res != null)
{
CBTQChangeCalc c = LsFixedBlockCalc(res, blocksizekb, false);
System.Console.WriteLine(String.Format("Disk Offset : {0}", c.offset));
System.Console.WriteLine(String.Format("Disk Length : {0}", c.length));
System.Console.WriteLine("###########################");
if (c.cbtreal.Count > 0)
{
foreach (CBTQChangedBlock block in c.cbtreal)
{
System.Console.WriteLine("Start {0,-20} Length {1,-20} Flagged Fixed Blocks {2,-5}", block.offset, block.length, block.fiximpact);
}
System.Console.WriteLine("###########################");
System.Console.WriteLine(String.Format("Total Bytes CBT Flagged \t: {0}", c.cbtrealtotal));
System.Console.WriteLine(String.Format("Total Bytes CBT Flagged (MB)\t: {0}", c.cbtrealtotalmb));
System.Console.WriteLine("###########################");
foreach (CBTQChangedBlock block in c.cbtfix)
{
System.Console.WriteLine("Fix Blocks Start {0,-20} Length {1,-20} Fixed Blocks {2,-5}", block.offset, block.length, block.fiximpact);
}
System.Console.WriteLine("###########################");
System.Console.WriteLine(String.Format("Total Fixed CBT Flagged \t: {0}", c.cbtfixchangedblocks));
System.Console.WriteLine(String.Format("Total Fixed Bytes CBT Flagged \t: {0}", c.cbtfixtotal));
System.Console.WriteLine(String.Format("Total Fixed Bytes CBT Flagged (MB)\t: {0}", c.cbtfixtotalmb));
}
else
{
System.Console.WriteLine("Could not find changed blocks");
}
}
}
}
public void DiskMonPrint(CBTQChangeCalc c, string vmmoref, int display)
{
System.Console.WriteLine(String.Format("Disk Offset : {0,30} Length : {1,30}", c.offset, c.length));
if (c.cbtreal.Count > 0)
{
if (display == 1)
{
foreach (CBTQChangedBlock block in c.cbtreal)
{
System.Console.WriteLine("Start {0,-20} Length {1,-20} Flagged Fixed Blocks {2,-5}", block.offset, block.length, block.fiximpact);
}
System.Console.WriteLine("");
foreach (CBTQChangedBlock block in c.cbtfix)
{
System.Console.WriteLine("Fix Blocks Start {0,-20} Length {1,-20} Fixed Blocks {2,-5}", block.offset, block.length, block.fiximpact);
}
System.Console.WriteLine("");
}
else if (display == 2)
{
MakePNG(c, vmmoref);
}
System.Console.WriteLine(String.Format(
"{0,14} | {1,10} | {2,10} | {3,14} | {4,10}", "Bytes CBT", "MBytes CBT", "Blocks Fix", "Bytes Fix", "MBytes Fix"
));
System.Console.WriteLine(String.Format(
"{0,14} | {1,10} | {2,10} | {3,14} | {4,10}", c.cbtrealtotal, c.cbtrealtotalmb, c.cbtfixchangedblocks, c.cbtfixtotal, c.cbtfixtotalmb
));
System.Console.WriteLine("");
}
else
{
System.Console.WriteLine("Could not find changed blocks");
if (display == 2)
{
MakePNG(c, vmmoref);
}
}
}
public void MakePNG(CBTQChangeCalc c, string vmmoref)
{
//mod here
int widthblock = 5;
int heightblock = 5;
int spacer = 1;
int blocksonrow = 128;
int offsetx = 10;
int offsety = 10;
DateTime d = DateTime.UtcNow;
String fixname = String.Format("fix-{0,4:D4}{1,2:D2}{2,2:D2}t{3,2:D2}{4,2:D2}{5,2:D2}z-{6}-{7}.png", d.Year, d.Month, d.Day, d.Hour, d.Minute, d.Second, c.blocksize, vmmoref);
DrawPNG(c.blocksize, c.length, c.cbtfixbitmap, c.cbtfixchangedblocks, fixname, widthblock, heightblock, spacer, blocksonrow, offsetx, offsety, true);
if (c.cbtrealbitmap != null)
{
String cbtname = String.Format("cbt-{0,4:D4}{1,2:D2}{2,2:D2}t{3,2:D2}{4,2:D2}{5,2:D2}z-{6}-{7}.png", d.Year, d.Month, d.Day, d.Hour, d.Minute, d.Second, c.cbtrealminblock, vmmoref);
DrawPNG(c.cbtrealminblock, c.length, c.cbtrealbitmap, c.cbtrealchangedblocks, cbtname, widthblock, heightblock, spacer, blocksonrow, offsetx, offsety, true);
}
}
public void DiskMonExtended(string vmmoref, int diskid, long blocksizekb, int display)
{
var vr = GetVm(vmmoref);
if (vr != null)
{
ManagedObjectReference csnap = null;
DateTime cdate = new DateTime(0);
String changeId = null;
bool allok = true;
while (allok)
{
var snapinfo = (VirtualMachineSnapshotInfo)cb.getServiceUtil().GetDynamicProperty(vr.Mor, "snapshot");
if (snapinfo != null)
{
ManagedObjectReference querycsnap = snapinfo.currentSnapshot;
if (querycsnap != null)
{
VirtualMachineSnapshotTree info = FindSnapInfo(snapinfo.rootSnapshotList, querycsnap.Value);;
if (info != null)
{
if (csnap != null)
{
if (!csnap.Value.Equals(querycsnap.Value) && info.createTime > cdate)
{
System.Console.WriteLine("New snapshot '" + info.name + "' detected, calculating diff");
Dictionary <long, CBTQListedDisk> disks = LsDiskExecute(querycsnap.Value);
if (disks.ContainsKey(diskid))
{
csnap = querycsnap;
cdate = info.createTime;
System.Console.WriteLine("New CBT Changeid " + disks[diskid].cbtTimestamp);
var res = vimservice.QueryChangedDiskAreas(vr.Mor, csnap, diskid, 0, changeId);
if (res != null)
{
CBTQChangeCalc c = LsFixedBlockCalc(res, blocksizekb, (display == 2));
DiskMonPrint(c, vmmoref, display);
}
changeId = disks[diskid].cbtTimestamp;
}
else
{
allok = false;
System.Console.WriteLine("VM does not contain disk id, halting");
}
}
}
else
{
System.Console.WriteLine("Detected First Reference Snap '" + info.name + "'");
Dictionary <long, CBTQListedDisk> disks = LsDiskExecute(querycsnap.Value);
if (disks.ContainsKey(diskid))
{
csnap = querycsnap;
cdate = info.createTime;
changeId = disks[diskid].cbtTimestamp;
System.Console.WriteLine("CBT Changeid " + changeId);
var res = vimservice.QueryChangedDiskAreas(vr.Mor, csnap, diskid, 0, "*");
if (res != null)
{
CBTQChangeCalc c = LsFixedBlockCalc(res, blocksizekb, (display == 2));
DiskMonPrint(c, vmmoref, display);
}
}
else
{
allok = false;
System.Console.WriteLine("VM does not contain disk id, halting");
}
}
if (info.name.Equals("stopdiskmon"))
{
System.Console.WriteLine("Detected 'stopdiskmon' snapshot");
allok = false;
}
}
}
}
System.Threading.Thread.Sleep(500);
}
}
else
{
System.Console.WriteLine("Could not find VM");
}
}
public CBTQChangeCalc LsFixedBlockCalc(DiskChangeInfo res, long blocksizekb, bool makecbtbitmap)
{
CBTQChangeCalc calcinfo = null;
if (res != null)
{
calcinfo = new CBTQChangeCalc();
long blocksize = blocksizekb * 1024;
bool[] cbtfixbitmap = null;
if (blocksize > 0)
{
//+1 for misalignment on the block level, normally does not happen but just in case
cbtfixbitmap = new bool[(res.length / blocksize) + 1];
for (var i = 0; i < cbtfixbitmap.Length; i++)
{
cbtfixbitmap[i] = false;
}
}
bool[] cbtbitmap = null;
long cbtblocksizemin = 1099511627776;
calcinfo.offset = res.startOffset;
calcinfo.length = res.length;
calcinfo.blocksize = blocksize;
//when flagging, instead of jumper per block, we will jump per maxjumpblockopt except at the end
//this should significantely speed up calculation of the bitmap
//to big is also not good because at the end more subjump will have to occure
long maxjumpblockopt = blocksize / 4;
long endmaxjumpblockopt = 1024;
if (res.changedArea != null && res.changedArea.Length > 0)
{
long changedarea = 0;
for (var i = 0; i < res.changedArea.Length; i++)
{
if (res.changedArea[i].length < cbtblocksizemin)
{
cbtblocksizemin = res.changedArea[i].length;
}
}
//make sure that jumps are smaller than the blocksize and the variable block size in CBT
long oneforthblock = cbtblocksizemin / 4;
if (oneforthblock < maxjumpblockopt)
{
maxjumpblockopt = oneforthblock;
}
System.Console.WriteLine("Jump size used: " + maxjumpblockopt);
if (makecbtbitmap)
{
if (cbtblocksizemin != 1099511627776 && cbtblocksizemin > 0)
{
cbtbitmap = new bool[(res.length / cbtblocksizemin) + 1];
for (var i = 0; i < cbtbitmap.Length; i++)
{
cbtbitmap[i] = false;
}
}
else
{
makecbtbitmap = false;
System.Console.WriteLine("Unusual block size, should not happen");
}
}
for (var i = 0; i < res.changedArea.Length; i++)
{
var changedblock = res.changedArea[i];
var start = changedblock.start;
var length = changedblock.length;
if (blocksize > 0)
{
long end = (start + length);
long flagged = 0;
long cbtflagged = 0;
//System.Console.WriteLine(fixstart);
//System.Console.WriteLine(fixend);
long prevtblock = -1;
long prevcbttblock = -1;
for (long m = start; m < end;)
{
long touchingblock = m / blocksize;
if (touchingblock >= 0 && touchingblock < cbtfixbitmap.Length && touchingblock != prevtblock)
{
cbtfixbitmap[touchingblock] = true;
flagged++;
prevtblock = touchingblock;
}
if (makecbtbitmap)
{
long cbttblock = m / cbtblocksizemin;
if (cbttblock >= 0 && cbttblock < cbtbitmap.Length && cbttblock != prevcbttblock)
{
cbtbitmap[cbttblock] = true;
cbtflagged++;
prevcbttblock = cbttblock;
}
}
//big continious region jumping
//if at the end, make sure we jump per 1kb to match the size at that point
//should give the most accurate prediction
long newm = m + maxjumpblockopt;
if (newm < end)
{
m = newm;
}
else
{
m += endmaxjumpblockopt;
}
}
//System.Console.WriteLine("Start {0,-20} Length {1,-20} Flagged Fixed Blocks {2,-5}", changedblock.start, changedblock.length, flagged);
calcinfo.cbtreal.Add(new CBTQChangedBlock(changedblock.start, changedblock.length, flagged));
}
else
{
calcinfo.cbtreal.Add(new CBTQChangedBlock(changedblock.start, changedblock.length, 0));
}
changedarea += changedblock.length;
}
calcinfo.cbtrealtotal = changedarea;
calcinfo.cbtrealtotalmb = Math.Round((((double)changedarea) / 1024 / 1024), 2);
if (makecbtbitmap)
{
calcinfo.cbtrealminblock = cbtblocksizemin;
calcinfo.cbtrealbitmap = cbtbitmap;
long cbtrealflagged = 0;
for (var i = 0; i < cbtbitmap.Length; i++)
{
if (cbtbitmap[i])
{
cbtrealflagged++;
}
}
calcinfo.cbtrealchangedblocks = cbtrealflagged;
}
if (blocksize > 0)
{
long fixedflagged = 0;
for (var i = 0; i < cbtfixbitmap.Length; i++)
{
if (cbtfixbitmap[i])
{
long begin = i * blocksize;
for (; i < cbtfixbitmap.Length && cbtfixbitmap[i]; i++)
{
fixedflagged += 1;
}
;
long end = i * blocksize;
calcinfo.cbtfix.Add(new CBTQChangedBlock(begin, (end - begin), (end - begin) / blocksize));
}
}
long fixedflaggedb = fixedflagged * blocksize;
calcinfo.cbtfixtotal = fixedflaggedb;
calcinfo.cbtfixtotalmb = Math.Round((((double)fixedflaggedb) / 1024 / 1024), 2);
calcinfo.cbtfixchangedblocks = fixedflagged;
calcinfo.cbtfixbitmap = cbtfixbitmap;
}
}
else
{
calcinfo.cbtfixchangedblocks = 0;
calcinfo.cbtfixtotal = 0;
calcinfo.cbtfixtotalmb = 0;
calcinfo.cbtfixbitmap = cbtfixbitmap;
if (makecbtbitmap)
{
calcinfo.cbtrealminblock = 64 * 1024;
calcinfo.cbtrealbitmap = new bool[res.length / calcinfo.cbtrealminblock];
for (var i = 0; i < calcinfo.cbtrealbitmap.Length; i++)
{
calcinfo.cbtrealbitmap[i] = false;
}
calcinfo.cbtrealtotal = 0;
calcinfo.cbtrealtotalmb = 0;
calcinfo.cbtrealchangedblocks = 0;
}
}
}
return(calcinfo);
}
