I have found on Kernel"s 2.4.27 (debian) 2.4.29 (mepis) and 2.6.10 (mepis), when I try to transfer a large volume of files, with total size about 1G, the usb harddrive, gets reset, and goes off line. I have to unplug it at plug it back in, and the data I sent is not complete. Only about 300M is there. This works with vfat, and ext3 formated partitions. There doesn"t seem to be a problem with usb 1.1 speed. Also if I transfer about 900M of data, sweet. Then leave the drive for a little while (Might be 5 mins, ie when I realise the transfer has finished), I can transfer another 900M ok. As you can prob guess... This problem can cause major issues, when you are trying to backup a computer, before a rebuild. Testing.
I used dd if=/dev/zero of=test1 bs=1024 count=number to see how large a transfer could be created. When count=999k the transfer was good When count=1000k the transfer failed. This was both on vfat and ext3 The second test I did was, how soon can another transfer be done and succeed. for this I used for ((x=1;x < 4;x++)) ; do dd if=/dev/zero of=test$x bs=1024 count=999k ; sleep 1 ; done That worked fine. I hope this helps someone. Fran
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