On Mon, 2016-09-19 at 16:07 -0400, Chris Mason wrote: > That's in the blockdev command (blockdev --setro /dev/xxx). Well, I know that ;-) ... but I bet most end-user don't (just as most end-users assume mount -r is truly ro)...
At least this is nowadays documented at the mount manpage... so in a way one can of course argue: if the user can't read you can't help him anyway... :) Cheers, Chris.
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