buf += sprintf(buf, "backgroundGCs...... %u\n", dev->backgroundGCs);
buf += sprintf(buf, "nRetriedWrites..... %u\n", dev->nRetriedWrites);
buf += sprintf(buf, "nRetireBlocks...... %u\n", dev->nRetiredBlocks);
buf += sprintf(buf, "backgroundGCs...... %u\n", dev->backgroundGCs);
buf += sprintf(buf, "nRetriedWrites..... %u\n", dev->nRetriedWrites);
buf += sprintf(buf, "nRetireBlocks...... %u\n", dev->nRetiredBlocks);