Correct units for "-dbcache" and "-prune"

All dbcache-related values in the code are measured in MiB (not in
megabytes, MB) or in bytes.
The GUI "-prune" values in GB are translated to the node values in MiB
correctly. The maximum of the "-prune" QSpinBox is not limited by the
default value of 99 (GB).
Also, this improves log readability.

1 files changed, 5 insertions, 4 deletions

diff --git a/src/qt/optionsdialog.cpp b/src/qt/optionsdialog.cpp
index c9871f6c66..789b51cd6f 100644
--- a/src/qt/optionsdialog.cpp
+++ b/src/qt/optionsdialog.cpp
@@ -10,6 +10,7 @@
 #include <qt/forms/ui_optionsdialog.h>
 
 #include <qt/bitcoinunits.h>
+#include <qt/guiconstants.h>
 #include <qt/guiutil.h>
 #include <qt/optionsmodel.h>
 
@@ -37,10 +38,6 @@ 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);
@@ -161,6 +158,10 @@ void OptionsDialog::setModel(OptionsModel *_model)
         mapper->toFirst();
 
         updateDefaultProxyNets();
+
+        // Prune values are in GB to be consistent with intro.cpp
+        static constexpr uint64_t nMinDiskSpace = (MIN_DISK_SPACE_FOR_BLOCK_FILES / GB_BYTES) + (MIN_DISK_SPACE_FOR_BLOCK_FILES % GB_BYTES) ? 1 : 0;
+        ui->pruneSize->setRange(nMinDiskSpace, _model->node().getAssumedBlockchainSize());
     }
 
     /* warn when one of the following settings changes by user action (placed here so init via mapper doesn't trigger them) */