Re: reeze while write on external usb 3.0 hard disk [Bug 204095]

From: Piergiorgio Sartor
Date: Mon Aug 26 2019 - 13:38:58 EST


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