On Wed, 16 Jun 2004, Alan Stern wrote:
On Wed, 16 Jun 2004, Guennadi Liakhovetski wrote:
Hi
After successfully copying some files to a USB-2.0 memory stick with ext3, which made it almost full, an attempt to umount it hung. So did "sync" and "cat /proc/bus/usb/devices". The exact sequence was "umount", "sync", unplug, "cat /proc/bus/usb/devices". Trace attached. As well as "lspci -v" output for the USB-1.1 host. top reported 100% CPU load, but the most active process was taking less than 0.5%. Ok, I guess, I didn't miss anything.
Is it known / fixed?
I can't tell what happened from your trace. Does a more recent kernel work any better?
If you're still stuck, try turning on usb-storage debugging in the kernel configuration.
Thanks, Alan. "Unfortunately", this is my desktop PC at work, so, I won't be able to freely experiment with it - it has to run. And USB is not its primary function. So, for now, I'll, probably, avoid using USB on that PC, but I'll try to reproduce the problem with another one, if successful, will try a newer kernel, turn debugging on, and report results.
Thanks Guennadi --- Guennadi Liakhovetski
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