On Thu, 7 Mar 2024 14:39:17 -0800 Stewart Andreason <sandreas41@xxxxxxxxx> wrote: > $ sudo mdadm --assemble --verbose /dev/md0 /dev/sdc1 /dev/sdd1 > mdadm: looking for devices for /dev/md0 > mdadm: /dev/sdc1 is identified as a member of /dev/md0, slot 0. > mdadm: /dev/sdd1 is identified as a member of /dev/md0, slot 1. > mdadm: added /dev/sdc1 to /dev/md0 as 0 (possibly out of date) > mdadm: added /dev/sdd1 to /dev/md0 as 1 > mdadm: /dev/md0 has been started with 1 drive (out of 2). Please include "dmesg" output that's printed after running this command. > Where are the Last-updated timestamps? Don't they match? See the "Event" counters, one drive indeed has less than the other. But that shouldn't be a problem as you use a bitmap and the outdated parts should simply resync from the other drive. As for the actual steps, when you are in this state as in your report, I'd try: mdadm --re-add /dev/md0 /dev/sdc1 But to me it is puzzling why it got removed to begin with. -- With respect, Roman
