applyPDA
applyPDA(raidPtr, pda, ppda, qpda, node->dagHdr->bp);
applyPDA(raidPtr, pda, ppda, qpda, node->dagHdr->bp);
applyPDA(raidPtr, node->params[i].p, ppda, qpda, node->dagHdr->bp);
applyPDA(raidPtr, node->params[i].p, ppda, qpda, node->dagHdr->bp);
applyPDA(RF_Raid_t * raidPtr, RF_PhysDiskAddr_t * pda, RF_PhysDiskAddr_t * ppda,