Why then there is such a thing as "uninterruptible sleep" in Unix/Linux?
What useful purpose (besides full Posix conformance) does this serve?

On Mon, 22 Jul 2002, guy keren wrote:

>
> On Mon, 22 Jul 2002, Sagi Bashari wrote:
[... snipped ...]
> >
> > Their parent- pid 1532 is already dead.
> >
> > My guess is that SMB share that I had mounted on this box have died after
> > the host rebooted. I cannot unmount that share because umount says that the
> > deviceis busy.
> >
> > Is there any way to kill the dead updatedb processesand umount the dead
> > shares without rebooting the system?
>
> no. that's why its called 'uninterruptible sleep'. 'kill -9' wn't help
> either, in such cases - they'll go away only when you reboot the mchine
> (and that reobot could get stuck while trying to umount the file systems,
> forcing you to reset the machine). this is an annoying problem, indeed.

                                             --- Omer
There is no IGLU Cabal.  The former Cabalists are now in a state of
uninterruptible sleep.
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