[Info-vax] Processes hang on USB-access

Joukj joukj at hrem.nano.tudelft.nl
Mon Feb 21 07:50:26 EST 2022


Volker Halle wrote:
> Jouk,
> 
> please force a crash. Then you can look at the static situation without SDA possibly going to RWAST ;-)

This morning I did not succeed to crash teh system. Decwindows is on the 
console and CRTL-F2 failed. Probably I need a LK keyboard (and not a 
PC-keyboard as is connected now). I may still have one, but I'll have to 
look where it is.
> 
> Device 'bsy' indicates, that the device has IOs pending and is probably waiting for an interrupt. Still: possible HW or driver problem.
> 

That's is logical. What I see is a hang of each process trying to 
perform I/O on the USB-disk.

hmm.. I do not think it is a driver problem, since on the boot-member I 
have attached another USB-drive (also 2GB) which already runs for 215 
days since the last reboot. The machine(s) giving problems are all 
satelites of this boot-member.

> There is a USB$SDA SDA extension, try SDA> USB HELP

I'll have a look at that.

      Jouk



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