disk inconsistency - should 'fsck' always executed with -y ?

[glenn at aoi.ultranet.com (Glenn Burkhardt)]

> But running with the -A option will not allow you make changes
> to the filesystem... if an inconsistency is found, you must run fsck
> manually.
> 
What changes would I like to make?

> When you have a real problem, you should run fsck -fy /dev/whatever on the
> filesystem named with the inconsistency, which will only check that
> filesystem, and automatically repair any problems (assuming it can). This
> mode of operation does not allow parallel checking, AFAIK.

If my system has a single physical disk, is there any downside to running
fsck -fy on boot?

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