fsck on mounted system?

[Liam Proven]

On 7 September 2012 14:30, Dave Howorth <dhoworth at mrc-lmb.cam.ac.uk> wrote:
> Liam Proven wrote:
>> On 7 September 2012 11:26, oxy <oxyopes at googlemail.com> wrote:
>>>> sudo touch /forcefsck
>>>>
>>>> and then the filesystem should be checked at the next reboot.
>>>
>>> is there a way to force fsck on shutdown?
>>
>> No, not AFAIK, because the system would have to drop from a multituser
>> runlevel down to single-user in order that the filesystems could be
>> remounted read-only.
>
> That could be done of course,

Yes, you are quite right. Non-trivial, though, and liable to cause
questions to be asked of a user who will not be able to answer them.

> but at shutdown, the system is also in its
> 'most likely to be corrupt' state. Not the ideal time to run some
> self-checking code.

Not 100% convinced of that, but OTOH, what we have works, so by the
KISS principle I am inclined to leave it well alone.

> It would be better to let the system shut down,
> reboot so it's in a completely known state, then run fsck and shut down
> again.



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