Whenever -blocksonly is specified, there is implicitly a zero size mempool. However, there is still a non-zero value for -maxmempool which will be shared with dbcache, leading to 300 MB extra usage. Fix this.
{
    
    const fs::path& datadir = gArgs.GetDataDirNet();
    if (!DirIsWritable(datadir)) {
        return InitError(strprintf(_("Cannot write to data directory '%s'; check permissions."), fs::PathToString(datadir)));
    }
    if (!LockDirectory(datadir, ".lock", probeOnly)) {
        return InitError(strprintf(_("Cannot obtain a lock on data directory %s. %s is probably already running."), fs::PathToString(datadir), PACKAGE_NAME));
    }
    return true;
}
bool AppInitSanityChecks(const kernel::Context& kernel)
{
    
    if (auto error = kernel::SanityChecks(kernel)) {
        InitError(*error);
        return InitError(strprintf(_("Initialization sanity check failed. %s is shutting down."), PACKAGE_NAME));
    }
    
    
    
    return LockDataDirectory(true);
}
bool AppInitLockDataDirectory()