On 22.04.2021 19:56, Devon Beets wrote: > I ran with sudo since my user is not root in this case: > > printf "%llu\n" -1 > sudo /sys/block/md126/md/resync_start > -bash: printf: /sys/block/md126/md/resync_start: invalid number > > So, we assumed that you simply wanted us to edit the resync_start file value to the number 18446744073709551615. I did it by hand using a text editor. After doing so, the value of the file changed to none. That's right, sorry I forgot about sudo. It's a bit tricky to use it with redirections. Something like this should work: sudo sh -c 'printf "%llu\n" -1 > /sys/block/md126/md/resync_start' > After that, I proceeded to reconstruct the array. But I changed the order of the commands. Not sure if that mattered. > > sudo mdadm -S /dev/md125 > mdadm: stopped /dev/md125 > > sudo mdadm -a /dev/md127 /dev/sdb > mdadm: added /dev/sdb > > sudo mdadm -R --force /dev/md126 > mdadm: Started /dev/md/Data with 3 devices (0 new) > > Even though it only reported 3 devices (0 new) during the last command's output, it successfully added the new /dev/sdb drive as a spare, started the array resync, and is recovering now as reported by cat /proc/mdstat. > > Thank you so much for the assistance! No problem, I'm glad you got it working. Regards, Artur
