Re: [9fans] No regression tests

[erik quanstrom <quanstro@quanstro.net>]

> Here mount /srv/bcscan /n/bc gives a readable /n/bc/bcU0/data.
>
> Then the reader is unplugged
>
> bootes           12    0:00   0:00      336K Pread bcscan
> bootes           13    0:00   0:00      336K Rendez bcscan
> bootes           14    0:00   0:00      336K Rendez bcscan
>
> Plaese note that here we see a different case. There are three
> spurious processes. On the plant (same test) there is only one.
>
> Then the reader is plugged in again
>
> bootes           13    0:00   0:00      336K Rendez bcscan
> bootes           14    0:00   0:00      336K Rendez bcscan
> bootes          432    0:00   0:00      336K Rendez bcscan
> bootes          434    0:00   0:00      336K Pread bcscan
> bootes          435    0:00   0:00      336K Rendez bcscan
> bootes          436    0:00   0:00      336K Rendez bcscan
> bootes          437    0:00   0:00      336K Open bcscan

i should learn chess so i don't ask questions in serial.

with acid, you can get a backtrace of process 12 and get the fd
it is reading.  /proc/12/fd should have the file descriptor bcscan
thinks is open.  if it

also, since process 13 and 14 did not wake from rendezvous,
there is a second issue.  maybe you can see how 12 could exit
and leave 13 and 14 hanging.

- erik