At Mon, 5 Apr 2021 07:04:32 -0000 (UTC), mlelstv%serpens.de@localhost (Michael van Elst) wrote: Subject: Re: how do I mount a read-only filesystem from the "root device" prompt? > > Someone would need to write code to "upgrade" vnodes. I doubt that's > trivial. Indeed -- I've underestimated the complexity of such low-level changes in the past -- they can snowball out of control! > Fortunately it is not necessary. If the parent device is read-only, > no "upgrade" will help to make it read-write. So you open read-write > or fail back to read-only when necessary. An attempt to open a wedge > read-write on a read-only opened parent device then has to fail. Yes, this makes sense. > I'm testing a patch for that... Excellent! Thank you very much! -- Greg A. Woods <gwoods%acm.org@localhost> Kelowna, BC +1 250 762-7675 RoboHack <woods%robohack.ca@localhost> Planix, Inc. <woods%planix.com@localhost> Avoncote Farms <woods%avoncote.ca@localhost>
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