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电梯直达

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发表于 2013-09-03 19:14 |只看该作者 |倒序浏览

本帖最后由 trackoftime 于 2013-09-07 16:22 编辑

高手帮忙分析下，在外接一个 hub 的时候，port1 接 HDD,port3 接 SD,挂载成功后,串口下指令:
1。cp /mnt/SD /mnt/HDD 一次 cp 单文件没问题，多文件出错，cp 单个文件没问题。
hub 1-1:1.0: hub_port_status failed (err = -32)
hub 1-1:1.0: cannot reset port 2 (err = -79)

2. cp /mnt/HDD /mnt/SD 一次 cp 单个文件或者多个文件都有问题

hub 1-1:1.0: hub_port_status failed (err = -32)
hub 1-1:1.0: cannot reset port 2 (err = -79)
hub 1-1:1.0: hub_port_status failed (err = -32)
hub 1-1:1.0: cannot reset port 2 (err = -79)
hub 1-1:1.0: hub_port_status failed (err = -32)
hub 1-1:1.0: hub_port_status failed (err = -32)
hub 1-1:1.0: Cannot enable port 2. Maybe the USB cable is bad?
hub 1-1:1.0: cannot disable port 2 (err = -79)
hub 1-1:1.0: hub_port_status failed (err = -32)
hub 1-1:1.0: cannot reset port 2 (err = -79)
hub 1-1:1.0: hub_port_status failed (err = -32)
hub 1-1:1.0: hub_port_status failed (err = -32)
hub 1-1:1.0: cannot reset port 2 (err = -79)
hub 1-1:1.0: hub_port_status failed (err = -32)
hub 1-1:1.0: hub_port_status failed (err = -32)