diff options
| -rw-r--r-- | src/node/blockstorage.cpp | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/src/node/blockstorage.cpp b/src/node/blockstorage.cpp index af84e6d7e7..27b11af886 100644 --- a/src/node/blockstorage.cpp +++ b/src/node/blockstorage.cpp @@ -619,7 +619,18 @@ bool BlockManager::FindBlockPos(FlatFilePos& pos, unsigned int nAddSize, unsigne bool finalize_undo = false; if (!fKnown) { - while (m_blockfile_info[nFile].nSize + nAddSize >= (gArgs.GetBoolArg("-fastprune", false) ? 0x10000 /* 64kb */ : MAX_BLOCKFILE_SIZE)) { + unsigned int max_blockfile_size{MAX_BLOCKFILE_SIZE}; + // Use smaller blockfiles in test-only -fastprune mode - but avoid + // the possibility of having a block not fit into the block file. + if (gArgs.GetBoolArg("-fastprune", false)) { + max_blockfile_size = 0x10000; // 64kiB + if (nAddSize >= max_blockfile_size) { + // dynamically adjust the blockfile size to be larger than the added size + max_blockfile_size = nAddSize + 1; + } + } + assert(nAddSize < max_blockfile_size); + while (m_blockfile_info[nFile].nSize + nAddSize >= max_blockfile_size) { // when the undo file is keeping up with the block file, we want to flush it explicitly // when it is lagging behind (more blocks arrive than are being connected), we let the // undo block write case handle it |