[Info-vax] Processes hang on USB-access

[Joukj]

Volker Halle wrote:
> Joukj schrieb am Montag, 28. Februar 2022 um 10:58:12 UTC+1:
> 
>> From the next crash dump I find: 
>>
>> FFFFFFFF.82988F8C IRP$L_FPC 00020087 SYS$K_VERSION_08+00067
> 
> This looks like an internal PID again, not a FORK PC.
> 
> If accesses to the USB disk seem to hang, issue a couple of those commands and see, if the IRP and FPC and IRP$L_QIO_P3 are always the same. That would prove, that the SAME IO operation is always current and is stuck.
> 
> SDA> SHOW DEV DNA2
> SDA> READ SYSDEF
> 
> SDA> format @(ucb+ucb$l_irp)
> 

Correct stays the same on the hanging system

Now I get

FFFFFFFF.8299890C   IRP$L_FPC                       81DB3F50 
  SYS$DUD
RIVER+17B50


and

SDA> exa/ins @81DB3F50
%SDA-E-NOREAD, unable to access location 00000000.00003088

        Jouk