Control: tag -1 moreinfo
On Sun, 26 Jul 2015 04:32:23 -0700 "Dallas E. Legan" <aw585@lafn.org> wrote:
> Package: mount
> Version: 2.26.2-6
> Severity: normal
> Tags: upstream
>
> Dear Maintainer,
> I've found trying to mount an optical disk that turns out to be bad,
> (this is the case I've encountered, may possibly happen with other media)
> can cause the mount command to go into a noninteruptable sleep state,
> waiting for response from the hardware that never arrives.
Block device I/O is normally uninterruptible; that's standard Unix
behaviour that is unlikely to be changed.
However there should be a timeout in the driver. How long did you wait?
> This latter can interfere in placing the computer in hibernate or
> performing a clean shutdown.
> My understanding is that the command could alternatively be implimented to
> use a "killable" state, similar to the uninteruptable sleep,
> except that the process can be killed.
> If there are reason's the noninteruptable sleep must be used
> most of the time, perhaps providing a switch to enforce
> "killable" when the media is of unproven quality would be possible.
Well, it's not as simple as that. The driver would have to allow the
I/O to be cancelled.
> Thanks for any consideration.
Ben.
--
Ben Hutchings
Hoare's Law of Large Problems:
Inside every large problem is a small problem struggling to get out.
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