On Tue, Aug 20, 2019 at 06:37:22PM +0200, Piergiorgio Sartor wrote: > On Tue, Aug 20, 2019 at 09:23:26AM +0200, Christoph Hellwig wrote: > > On Mon, Aug 19, 2019 at 10:14:25AM -0400, Alan Stern wrote: > > > Let's bring this to the attention of some more people. > > > > > > It looks like the bug that was supposed to be fixed by commit > > > d74ffae8b8dd ("usb-storage: Add a limitation for > > > blk_queue_max_hw_sectors()"), which is part of 5.2.5, but apparently > > > the bug still occurs. > > > > Piergiorgio, > > > > can you dump the content of max_hw_sectors_kb file for your USB storage > > device and send that to this thread? > > Hi all, > > for both kernels, 5.1.20 (working) and 5.2.8 (not working), > the content of /sys/dev/x:y/queue/max_hw_sectors_kb is 512 > for USB storage devices (2.0 and 3.0). > > This is for the PC showing the issue. > > In an other PC, which does not show the issus at the moment, > the values are 120, for USB2.0, and 256, for USB3.0. Hi again, any news on this? Is there anything I can do to help? Should I report this somewhere else too? Currently this is quite a huge problem for me, since the only working external storage is an old 1394 HDD... Thanks, bye, -- piergiorgio