In the log I see things like:

    2017-09-13 03:54:33 init message: Rescanning...
    2017-09-13 03:54:33 Rescanning last 68616 blocks (from block 416339)...
    2017-09-13 03:54:40 AddToWallet xxxxx  update
    2017-09-13 03:55:33 Still rescanning. At block 418849. Progress=0.549138

I would be interested to see the wallet file name on each of these log lines.

Would there be any interest in merging such a PR?
{
    return (strType== "key" || strType == "wkey" ||
            strType == "mkey" || strType == "ckey");
}
DBErrors WalletBatch::LoadWallet(CWallet* pwallet)
{
    CWalletScanState wss;
    bool fNoncriticalErrors = false;
    DBErrors result = DBErrors::LOAD_OK;
    LOCK(pwallet->cs_wallet);
    try {
        int nMinVersion = 0;
        if (m_batch.Read((std::string)"minversion", nMinVersion))
        {
            if (nMinVersion > FEATURE_LATEST)
                return DBErrors::TOO_NEW;
            pwallet->LoadMinVersion(nMinVersion);
        }
        
        Dbc* pcursor = m_batch.GetCursor();
        if (!pcursor)
        {
            LogPrintf("Error getting wallet database cursor\n");
            return DBErrors::CORRUPT;
        }
        while (true)
        {