> > I?ve been looking into the ?kernel looks to be hung at reboot? problem at
> > bit. Adding a lot of printf() calls to the relevant parts it looks like it
> > actually isn?t hung but busy unmounting filesystems (which we have
> > thousands of), flushing disk caches, calling registered callbacks and stuff
> > and sometimes it takes a bit longer than usual - probably due to ZFS having
> > stuff queued up that needs to be written to disk before it finishes?
> >
> > Anyway, I?d like to propose that we add some kind of counter/printf() calls
> > in that code area so we can see that things are indeed progressing.
> > However, I?d probably prefer not to print _every_ filesystem (or registered
> > callbacks - a lot of those...) - that generates a lot of output (tried that
> > :-) but something like:
> >
> > Unmounting filesystems:
> > 1234 done
> > (With the "1234 done? updated something like once per second).
> >
> > What?s the right/best way to do that from the kernel? In user space I?d
> > just call time(&t) at some convenient points and only print something if
> > ?t? has changed. :-)
>
> How about updated every 128 unmounts?
>
> if ((i & 0x7f) == i) printf("%i done\n:");
if ((i & 0x7f) == 0) printf("%i done\n:");
> >
> > - Peter
>
> --
> Rod Grimes rgri...@freebsd.org
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--
Rod Grimes rgri...@freebsd.org
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