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Relocate calls to CheckDiskSpace

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Make sure we're checking disk space for block index writes and allow for pruning to happen before chainstate writes.
This commit is contained in:
Alex Morcos 2015-05-11 11:18:39 -04:00 committed by Pieter Wuille
parent 67708acff9
commit 86a5f4b54e
1 changed files with 9 additions and 6 deletions
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15
src/main.cpp
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@ -1919,12 +1919,8 @@ bool static FlushStateToDisk(CValidationState &state, FlushStateMode mode) {
bool fDoFullFlush = (mode == FLUSH_STATE_ALWAYS) || fCacheLarge || fCacheCritical || fPeriodicFlush || fFlushForPrune; bool fDoFullFlush = (mode == FLUSH_STATE_ALWAYS) || fCacheLarge || fCacheCritical || fPeriodicFlush || fFlushForPrune;
// Write blocks and block index to disk. // Write blocks and block index to disk.
if (fDoFullFlush || fPeriodicWrite) { if (fDoFullFlush || fPeriodicWrite) {
// Typical CCoins structures on disk are around 128 bytes in size. // Depend on nMinDiskSpace to ensure we can write block index
// Pushing a new one to the database can cause it to be written if (!CheckDiskSpace(0))
// twice (once in the log, and once in the tables). This is already
// an overestimation, as most will delete an existing entry or
// overwrite one. Still, use a conservative safety factor of 2.
if (fDoFullFlush && !CheckDiskSpace(128 * 2 * 2 * pcoinsTip->GetCacheSize()))
return state.Error("out of disk space"); return state.Error("out of disk space");
// First make sure all block and undo data is flushed to disk. // First make sure all block and undo data is flushed to disk.
FlushBlockFile(); FlushBlockFile();
@ -1955,6 +1951,13 @@ bool static FlushStateToDisk(CValidationState &state, FlushStateMode mode) {
} }
// Flush best chain related state. This can only be done if the blocks / block index write was also done. // Flush best chain related state. This can only be done if the blocks / block index write was also done.
if (fDoFullFlush) { if (fDoFullFlush) {
// Typical CCoins structures on disk are around 128 bytes in size.
// Pushing a new one to the database can cause it to be written
// twice (once in the log, and once in the tables). This is already
// an overestimation, as most will delete an existing entry or
// overwrite one. Still, use a conservative safety factor of 2.
if (!CheckDiskSpace(128 * 2 * 2 * pcoinsTip->GetCacheSize()))
return state.Error("out of disk space");
// Flush the chainstate (which may refer to block index entries). // Flush the chainstate (which may refer to block index entries).
if (!pcoinsTip->Flush()) if (!pcoinsTip->Flush())
return state.Abort("Failed to write to coin database"); return state.Abort("Failed to write to coin database");