[arch-general] USB Buffering Issue

Paul Gideon Dann pdgiddie at gmail.com
Fri Dec 2 05:48:23 EST 2011


Hello all,

I've been having some trouble with USB drives in the last few months.  When 
copying files onto a device, the copy appears to be instantaneous, but is 
clearly buffered by the kernel.  If I unmount the drive, all appears well, but 
then removing the device results in corruption.

In order to work around this, I have to run "sync" before unmounting the 
device.

Any ideas what might be causing this, or how to fix it?  It would be nice to 
get a *real* progress bar when copying large files, instead of a quick flash 
followed by a boring minute or more of staring at "sync".

Paul


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