diff options
Diffstat (limited to 'src/init.cpp')
| -rw-r--r-- | src/init.cpp | 90 |
1 files changed, 86 insertions, 4 deletions
diff --git a/src/init.cpp b/src/init.cpp index 665aebe1c5..b648a237bf 100644 --- a/src/init.cpp +++ b/src/init.cpp @@ -275,7 +275,12 @@ std::string HelpMessage(HelpMessageMode mode) #ifndef WIN32 strUsage += HelpMessageOpt("-pid=<file>", strprintf(_("Specify pid file (default: %s)"), "bitcoind.pid")); #endif - strUsage += HelpMessageOpt("-reindex", _("Rebuild block chain index from current blk000??.dat files") + " " + _("on startup")); + strUsage += HelpMessageOpt("-prune=<n>", _("Reduce storage requirements by pruning (deleting) old blocks. This mode disables wallet support and is incompatible with -txindex.") + " " + + _("Warning: Reverting this setting requires re-downloading the entire blockchain.") + " " + + _("(default: 0 = disable pruning blocks,") + " " + + strprintf(_(">%u = target size in MiB to use for block files)"), MIN_DISK_SPACE_FOR_BLOCK_FILES / 1024 / 1024)); +strUsage += HelpMessageOpt("-reindex", _("Rebuild block chain index from current blk000??.dat files") + " " + _("on startup")); + #if !defined(WIN32) strUsage += HelpMessageOpt("-sysperms", _("Create new files with system default permissions, instead of umask 077 (only effective with disabled wallet functionality)")); #endif @@ -352,7 +357,7 @@ std::string HelpMessage(HelpMessageMode mode) strUsage += HelpMessageOpt("-flushwallet", strprintf(_("Run a thread to flush wallet periodically (default: %u)"), 1)); strUsage += HelpMessageOpt("-stopafterblockimport", strprintf(_("Stop running after importing blocks from disk (default: %u)"), 0)); } - string debugCategories = "addrman, alert, bench, coindb, db, lock, rand, rpc, selectcoins, mempool, net, proxy"; // Don't translate these and qt below + string debugCategories = "addrman, alert, bench, coindb, db, lock, rand, rpc, selectcoins, mempool, net, proxy, prune"; // Don't translate these and qt below if (mode == HMM_BITCOIN_QT) debugCategories += ", qt"; strUsage += HelpMessageOpt("-debug=<category>", strprintf(_("Output debugging information (default: %u, supplying <category> is optional)"), 0) + ". " + @@ -458,10 +463,33 @@ struct CImportingNow } }; + +// If we're using -prune with -reindex, then delete block files that will be ignored by the +// reindex. Since reindexing works by starting at block file 0 and looping until a blockfile +// is missing, and since pruning works by deleting the oldest block file first, just check +// for block file 0, and if it doesn't exist, delete all the block files in the +// directory (since they won't be read by the reindex but will take up disk space). +void DeleteAllBlockFiles() +{ + if (boost::filesystem::exists(GetBlockPosFilename(CDiskBlockPos(0, 0), "blk"))) + return; + + LogPrintf("Removing all blk?????.dat and rev?????.dat files for -reindex with -prune\n"); + boost::filesystem::path blocksdir = GetDataDir() / "blocks"; + for (boost::filesystem::directory_iterator it(blocksdir); it != boost::filesystem::directory_iterator(); it++) { + if (is_regular_file(*it)) { + if ((it->path().filename().string().length() == 12) && + (it->path().filename().string().substr(8,4) == ".dat") && + ((it->path().filename().string().substr(0,3) == "blk") || + (it->path().filename().string().substr(0,3) == "rev"))) + boost::filesystem::remove(it->path()); + } + } +} + void ThreadImport(std::vector<boost::filesystem::path> vImportFiles) { RenameThread("bitcoin-loadblk"); - // -reindex if (fReindex) { CImportingNow imp; @@ -674,6 +702,21 @@ bool AppInit2(boost::thread_group& threadGroup) if (nFD - MIN_CORE_FILEDESCRIPTORS < nMaxConnections) nMaxConnections = nFD - MIN_CORE_FILEDESCRIPTORS; + // if using block pruning, then disable txindex + // also disable the wallet (for now, until SPV support is implemented in wallet) + if (GetArg("-prune", 0)) { + if (GetBoolArg("-txindex", false)) + return InitError(_("Prune mode is incompatible with -txindex.")); +#ifdef ENABLE_WALLET + if (!GetBoolArg("-disablewallet", false)) { + if (SoftSetBoolArg("-disablewallet", true)) + LogPrintf("%s : parameter interaction: -prune -> setting -disablewallet=1\n", __func__); + else + return InitError(_("Can't run with a wallet in prune mode.")); + } +#endif + } + // ********************************************************* Step 3: parameter-to-internal-flags fDebug = !mapMultiArgs["-debug"].empty(); @@ -710,6 +753,21 @@ bool AppInit2(boost::thread_group& threadGroup) nScriptCheckThreads = MAX_SCRIPTCHECK_THREADS; fServer = GetBoolArg("-server", false); + + // block pruning; get the amount of disk space (in MB) to allot for block & undo files + int64_t nSignedPruneTarget = GetArg("-prune", 0) * 1024 * 1024; + if (nSignedPruneTarget < 0) { + return InitError(_("Prune cannot be configured with a negative value.")); + } + nPruneTarget = (uint64_t) nSignedPruneTarget; + if (nPruneTarget) { + if (nPruneTarget < MIN_DISK_SPACE_FOR_BLOCK_FILES) { + return InitError(strprintf(_("Prune configured below the minimum of %d MB. Please use a higher number."), MIN_DISK_SPACE_FOR_BLOCK_FILES / 1024 / 1024)); + } + LogPrintf("Prune configured to target %uMiB on disk for block and undo files.\n", nPruneTarget / 1024 / 1024); + fPruneMode = true; + } + #ifdef ENABLE_WALLET bool fDisableWallet = GetBoolArg("-disablewallet", false); #endif @@ -1030,8 +1088,12 @@ bool AppInit2(boost::thread_group& threadGroup) pcoinscatcher = new CCoinsViewErrorCatcher(pcoinsdbview); pcoinsTip = new CCoinsViewCache(pcoinscatcher); - if (fReindex) + if (fReindex) { pblocktree->WriteReindexing(true); + //If we're reindexing in prune mode, wipe away all our block and undo data files + if (fPruneMode) + DeleteAllBlockFiles(); + } if (!LoadBlockIndex()) { strLoadError = _("Error loading block database"); @@ -1055,7 +1117,18 @@ bool AppInit2(boost::thread_group& threadGroup) break; } + // Check for changed -prune state. What we are concerned about is a user who has pruned blocks + // in the past, but is now trying to run unpruned. + if (fHavePruned && !fPruneMode) { + strLoadError = _("You need to rebuild the database using -reindex to go back to unpruned mode. This will redownload the entire blockchain"); + break; + } + uiInterface.InitMessage(_("Verifying blocks...")); + if (fHavePruned && GetArg("-checkblocks", 288) > MIN_BLOCKS_TO_KEEP) { + LogPrintf("Prune: pruned datadir may not have more than %d blocks; -checkblocks=%d may fail\n", + MIN_BLOCKS_TO_KEEP, GetArg("-checkblocks", 288)); + } if (!CVerifyDB().VerifyDB(pcoinsdbview, GetArg("-checklevel", 3), GetArg("-checkblocks", 288))) { strLoadError = _("Corrupted block database detected"); @@ -1106,6 +1179,15 @@ bool AppInit2(boost::thread_group& threadGroup) mempool.ReadFeeEstimates(est_filein); fFeeEstimatesInitialized = true; + // if prune mode, unset NODE_NETWORK and prune block files + if (fPruneMode) { + LogPrintf("Unsetting NODE_NETWORK on prune mode\n"); + nLocalServices &= ~NODE_NETWORK; + if (!fReindex) { + PruneAndFlush(); + } + } + // ********************************************************* Step 8: load wallet #ifdef ENABLE_WALLET if (fDisableWallet) { |