Oops.
I appear to have made an error.
It appears this feature has been removed:
https://bugzilla.redhat.com/bugzilla....cgi?id=109442
RedHat 9 definitely did have this feature, though.
What I would suggest is that you get a rescue CD (Knoppix or similar) and run e2fsck -c (check the man page first), or 'badblocks' on the affected drive.
Dave