一、硬件平台
RK3399+NVME固态硬盘
二、软件调式过程
1、
在dev/block下有识别到nvme
2、格式化 挂载之后 下df-h 看到已经识别到硬盘容量
格式化命令：mkdosfs /dev/block/nvme0n1p1
挂载命令：busybox mount /dev/block/nvme0n1p1 /data/nvme
加log分析
void VolumeManager::handleBlockEvent(NetlinkEvent *evt) {
std::lock_guard lock(mLock);
std::lock_guard
if (mDebug) {
LOG(VERBOSE) << "----------------";
LOG(VERBOSE) << "handleBlockEvent with action " << (int) evt->getAction();
evt->dump();
}std::string eventPath(evt->findParam("DEVPATH")?evt->findParam("DEVPATH"):"");
std::string devType(evt->findParam("DEVTYPE")?evt->findParam("DEVTYPE"):"");
+ LOG << "handleBlockEvent with eventPath " << eventPath;
if (devType != "disk") return;
加入补丁
1. if (isVirtioBlkDevice(majorId)) {
LOG << "Recognized experimental block major ID " << majorId
<< " as virtio-blk (emulator's virtual SD card device)";
mLabel = "Virtual";
break;
}
if(majorId==259) {
LOG << "majorID==259 major11 type " << majorId;
mLabel = "Pcie";
break;
}
LOG << "Unsupported block major11 type " << majorId;
return -ENOTSUP;
LOG << "Recognized experimental block major ID " << majorId
<< " as virtio-blk (emulator's virtual SD card device)";
mLabel = "Virtual";
break;
}
if(majorId==259) {
LOG << "majorID==259 major11 type " << majorId;
mLabel = "Pcie";
break;
}
LOG << "Unsupported block major11 type " << majorId;
return -ENOTSUP;
2： if (isVirtioBlkDevice(majorId)) {
// drivers/block/virtio_blk.c has "#define PART_BITS 4", so max is
// 2^4 - 1 = 15
return 15;
}
if(majorId==259) {
LOG << "majorID==259 major22 type " << majorId;
return 15;
}
// drivers/block/virtio_blk.c has "#define PART_BITS 4", so max is
// 2^4 - 1 = 15
return 15;
}
if(majorId==259) {
LOG << "majorID==259 major22 type " << majorId;
return 15;
}
结果可以识别到了 识别成USB移动设备
