On Mon, 9 Jan 2023 at 23:28, Greg Troxel <g...@lexort.com> wrote: > > David Brownlee <a...@absd.org> writes: > > > If only we had a reliable way to remount filesystems from read-write > > to readonly after flushing data, that could be an option on shutdown, > > then the ups command could be triggered with no writable filesystems > > :-P > > That is what ought to happen, yes. I am sort of surprised that doesn't > work.
I know it didn't work a while back, but I confess it's been a while since I tried. If it is reliable it might be a interesting pattern to switch criticallocal filesystems to readonly at the end of the shutdown and have a final point where UPs or other tasks could just just after that (allowing that they do not have any writable storage) David
