> > > from what i read now i should have used mdadm --grow. but i enlarged the > > partitions. then neither grub nor linux could find the array. the > > enlarged partitions were fine but the raid1 array had vanished. > > I see you generally insist on playing the dangerous game of learning on > "production" setups, as in, you try your experiments on hardware with data > that you care about. > you make unkind assumptions. the box at issue already failed. spurious reboots. all data was both fully backed up and migrated to working servers as a matter of standard op procedure. i'm about trying to diagnose it. i wanted to create a diagnostics partition so the manufacturer diagnostics could write a progress log that was fetchable even after a spurious reboot. if the box died further it would be no real loss, but for both my convenience and learning i tried to do what was needed without killing the OS, and succeeded. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://mailman.mn-linux.org/pipermail/tclug-list/attachments/20180115/bb8d88b6/attachment.html>