Any help ? Il giorno gio 25 gen 2024 alle ore 15:49 Gandalf Corvotempesta <gandalf.corvotempesta@xxxxxxxxx> ha scritto: > > Ok, i think i did a mess. > I have a 3 way mirror with 3 drives on it > All drives are working, not failed. > I would like to replace one of these drive (because it's very old) > with a new drive. > I would like to to the add and replace in the same phase, without > reducing the redundancy level > I did this multiple times before, during the sync, the array is a 4 way mirror > > BUT this time i think i did an issue, i've just run this: > > $ mdadm /dev/md0 --add /dev/sdd1 --replace /dev/sda1 --with /dev/sdd1 > > sda was marked failed immediately, and sdd1 is marked as active sync. > Less than 1 second. > > Is this ok or i've just added a blank drive and forced the removal of > a working one ? > > Honestly, and this is something that comes to mind right now, the > partition is very very small, like 64MB so 1 second sync (on a SSD) > could be ok. > > but: > 1. which is the right command to run to add-sync-remove a not-failed disk ? > 2. how can I ensure that sdd is working as expected and data were > synced properly?