Merge pull request bitcoin#133 from dgenr8/increase_min_diskspace

Increase min diskspace

src/main.h

@@ -152,15 +152,15 @@ extern uint64_t nPruneTarget;
 /** Block files containing a block-height within MIN_BLOCKS_TO_KEEP of chainActive.Tip() will not be pruned. */
 static const signed int MIN_BLOCKS_TO_KEEP = 288;
 
-// Require that user allocate at least 550MB for block & undo files (blk???.dat and rev???.dat)
-// At 1MB per block, 288 blocks = 288MB.
-// Add 15% for Undo data = 331MB
-// Add 20% for Orphan block rate = 397MB
-// We want the low water mark after pruning to be at least 397 MB and since we prune in
+// Require that user allocate at least 950MB for block & undo files (blk???.dat and rev???.dat)
+// At 2MB per block, 288 blocks = 576MB.
+// Add 15% for Undo data = 662MB
+// Add 20% for Orphan block rate = 794MB
+// We want the low water mark after pruning to be at least 794 MB and since we prune in
 // full block file chunks, we need the high water mark which triggers the prune to be
-// one 128MB block file + added 15% undo data = 147MB greater for a total of 545MB
-// Setting the target to > than 550MB will make it likely we can respect the target.
-static const signed int MIN_DISK_SPACE_FOR_BLOCK_FILES = 550 * 1024 * 1024;
+// one 128MB block file + added 15% undo data = 147MB greater for a total of 942MB
+// Setting the target to > than 950MB will make it likely we can respect the target.
+static const uint64_t MIN_DISK_SPACE_FOR_BLOCK_FILES = 950 * 1024 * 1024;
 
 /** Register with a network node to receive its signals */
 void RegisterNodeSignals(CNodeSignals& nodeSignals);