Re: [9fans] boot via aan from fileserver?

[Axel Belinfante <Axel.Belinfante@cs.utwente.nl>]

Just for those interested:
> In the mean time, after being away for a day, I find at home that
> my connection has been down long enough such that a machine
> booted 'normally' from the work fs gives the 'i/o on hungup channel'
> whereas the 'tcpaan' booted one does not complain but simply
> hangs and waits -- seems what I'm doing does not (yet?) give
> me what I'm looking for...

After thinking about the code of aan.c I supected that the syslog(0, ...)
calls in the if(dialstring) branch of reconnect() were
causing the problems:
network problem -> pending connection to fs -> trying to consult
fs to see if we can write to a log file not possible ->
deadlock while waiting for the result of the log file existence test?!?

Experiments seem to confirm this -- replacing those calls to
syslog(0, Logname, ...) by calls to dmessage(0, ...)
seems to have solved the problem.

Now my only remaining problem is to make a number of connections to u9fs
reliable as well. Since there is no unix aan, easiest trick seems
to mount them all on the cpu server (where I mount them anyway)
and reexport from there.
If there were something like aan for unix, I could maybe even mount
those u9fs things on the cpu server via /lib/namespace.$sysname
(and then on the terminal at home in the same way)

Axel.