diff --git a/doc/release-notes.md b/doc/release-notes.md
index 7a9a98bfe..e1bb84cca 100644
--- a/doc/release-notes.md
+++ b/doc/release-notes.md
@@ -56,6 +56,11 @@ frequently tested on them.
Notable changes
===============
+GUI changes
+-----------
+
+- Block storage can be limited under Preferences, in the Main tab. Undoing this setting requires downloading the full blockchain again. This mode is incompatible with -txindex and -rescan.
+
RPC changes
------------
diff --git a/src/qt/forms/optionsdialog.ui b/src/qt/forms/optionsdialog.ui
index a3721991e..8f34e6bc8 100644
--- a/src/qt/forms/optionsdialog.ui
+++ b/src/qt/forms/optionsdialog.ui
@@ -37,6 +37,69 @@
+ -
+
+
+ Qt::Horizontal
+
+
+
+ 40
+ 5
+
+
+
+
+ -
+
+
-
+
+
+ Disables some advanced features but all blocks will still be fully validated. Reverting this setting requires re-downloading the entire blockchain. Actual disk usage may be somewhat higher.
+
+
+ Prune &block storage to
+
+
+
+ -
+
+
+ -
+
+
+ GB
+
+
+ Qt::PlainText
+
+
+
+ -
+
+
+ Qt::Horizontal
+
+
+
+ 40
+ 20
+
+
+
+
+
+
+ -
+
+
+ Reverting this setting requires re-downloading the entire blockchain.
+
+
+ Qt::PlainText
+
+
+
-
-
@@ -81,7 +144,7 @@
-
-
+
-
@@ -103,7 +166,7 @@
-
-
+
Qt::Horizontal
diff --git a/src/qt/optionsdialog.cpp b/src/qt/optionsdialog.cpp
index c0ddb89b4..108aa4f99 100644
--- a/src/qt/optionsdialog.cpp
+++ b/src/qt/optionsdialog.cpp
@@ -36,8 +36,17 @@ OptionsDialog::OptionsDialog(QWidget *parent, bool enableWallet) :
/* Main elements init */
ui->databaseCache->setMinimum(nMinDbCache);
ui->databaseCache->setMaximum(nMaxDbCache);
+ static const uint64_t GiB = 1024 * 1024 * 1024;
+ static const uint64_t nMinDiskSpace = MIN_DISK_SPACE_FOR_BLOCK_FILES / GiB +
+ (MIN_DISK_SPACE_FOR_BLOCK_FILES % GiB) ? 1 : 0;
+ ui->pruneSize->setMinimum(nMinDiskSpace);
ui->threadsScriptVerif->setMinimum(-GetNumCores());
ui->threadsScriptVerif->setMaximum(MAX_SCRIPTCHECK_THREADS);
+ ui->pruneWarning->setVisible(false);
+ ui->pruneWarning->setStyleSheet("QLabel { color: red; }");
+
+ ui->pruneSize->setEnabled(false);
+ connect(ui->prune, SIGNAL(toggled(bool)), ui->pruneSize, SLOT(setEnabled(bool)));
/* Network elements init */
#ifndef USE_UPNP
@@ -157,6 +166,9 @@ void OptionsDialog::setModel(OptionsModel *_model)
/* warn when one of the following settings changes by user action (placed here so init via mapper doesn't trigger them) */
/* Main */
+ connect(ui->prune, SIGNAL(clicked(bool)), this, SLOT(showRestartWarning()));
+ connect(ui->prune, SIGNAL(clicked(bool)), this, SLOT(togglePruneWarning(bool)));
+ connect(ui->pruneSize, SIGNAL(valueChanged(int)), this, SLOT(showRestartWarning()));
connect(ui->databaseCache, SIGNAL(valueChanged(int)), this, SLOT(showRestartWarning()));
connect(ui->threadsScriptVerif, SIGNAL(valueChanged(int)), this, SLOT(showRestartWarning()));
/* Wallet */
@@ -176,6 +188,8 @@ void OptionsDialog::setMapper()
mapper->addMapping(ui->bitcoinAtStartup, OptionsModel::StartAtStartup);
mapper->addMapping(ui->threadsScriptVerif, OptionsModel::ThreadsScriptVerif);
mapper->addMapping(ui->databaseCache, OptionsModel::DatabaseCache);
+ mapper->addMapping(ui->prune, OptionsModel::Prune);
+ mapper->addMapping(ui->pruneSize, OptionsModel::PruneSize);
/* Wallet */
mapper->addMapping(ui->spendZeroConfChange, OptionsModel::SpendZeroConfChange);
@@ -266,6 +280,11 @@ void OptionsDialog::on_hideTrayIcon_stateChanged(int fState)
}
}
+void OptionsDialog::togglePruneWarning(bool enabled)
+{
+ ui->pruneWarning->setVisible(!ui->pruneWarning->isVisible());
+}
+
void OptionsDialog::showRestartWarning(bool fPersistent)
{
ui->statusLabel->setStyleSheet("QLabel { color: red; }");
diff --git a/src/qt/optionsdialog.h b/src/qt/optionsdialog.h
index faf9ff895..5aad484ce 100644
--- a/src/qt/optionsdialog.h
+++ b/src/qt/optionsdialog.h
@@ -53,6 +53,7 @@ private Q_SLOTS:
void on_hideTrayIcon_stateChanged(int fState);
+ void togglePruneWarning(bool enabled);
void showRestartWarning(bool fPersistent = false);
void clearStatusLabel();
void updateProxyValidationState();
diff --git a/src/qt/optionsmodel.cpp b/src/qt/optionsmodel.cpp
index cae9dace4..31a85f4e2 100644
--- a/src/qt/optionsmodel.cpp
+++ b/src/qt/optionsmodel.cpp
@@ -88,6 +88,16 @@ void OptionsModel::Init(bool resetSettings)
// by command-line and show this in the UI.
// Main
+ if (!settings.contains("bPrune"))
+ settings.setValue("bPrune", false);
+ if (!settings.contains("nPruneSize"))
+ settings.setValue("nPruneSize", 2);
+ // Convert prune size to MB:
+ const uint64_t nPruneSizeMB = settings.value("nPruneSize").toInt() * 1000;
+ if (!m_node.softSetArg("-prune", settings.value("bPrune").toBool() ? std::to_string(nPruneSizeMB) : "0")) {
+ addOverriddenOption("-prune");
+ }
+
if (!settings.contains("nDatabaseCache"))
settings.setValue("nDatabaseCache", (qint64)nDefaultDbCache);
if (!m_node.softSetArg("-dbcache", settings.value("nDatabaseCache").toString().toStdString()))
@@ -281,6 +291,10 @@ QVariant OptionsModel::data(const QModelIndex & index, int role) const
return settings.value("language");
case CoinControlFeatures:
return fCoinControlFeatures;
+ case Prune:
+ return settings.value("bPrune");
+ case PruneSize:
+ return settings.value("nPruneSize");
case DatabaseCache:
return settings.value("nDatabaseCache");
case ThreadsScriptVerif:
@@ -405,6 +419,18 @@ bool OptionsModel::setData(const QModelIndex & index, const QVariant & value, in
settings.setValue("fCoinControlFeatures", fCoinControlFeatures);
Q_EMIT coinControlFeaturesChanged(fCoinControlFeatures);
break;
+ case Prune:
+ if (settings.value("bPrune") != value) {
+ settings.setValue("bPrune", value);
+ setRestartRequired(true);
+ }
+ break;
+ case PruneSize:
+ if (settings.value("nPruneSize") != value) {
+ settings.setValue("nPruneSize", value);
+ setRestartRequired(true);
+ }
+ break;
case DatabaseCache:
if (settings.value("nDatabaseCache") != value) {
settings.setValue("nDatabaseCache", value);
diff --git a/src/qt/optionsmodel.h b/src/qt/optionsmodel.h
index fc1d119a7..2777cbeaf 100644
--- a/src/qt/optionsmodel.h
+++ b/src/qt/optionsmodel.h
@@ -50,6 +50,8 @@ public:
Language, // QString
CoinControlFeatures, // bool
ThreadsScriptVerif, // int
+ Prune, // bool
+ PruneSize, // int
DatabaseCache, // int
SpendZeroConfChange, // bool
Listen, // bool