Re-reading my own mail I noticed that md says "data-check" and not "rebuilding" I was not aware there was such a thing. Searching the interwebs I found that there is a difference, it is not rebuilding - although /proc/mdstat looks more or less the same as during a rebuild. Exactly. This is normal behaviour by the RAID system for eons now. The drives are checked for consistency once a month. If there is an error, a drive is marked faulty and is bumped out of the active set. It would remain faulty without manual intervention by the sysop. So, you cannot see the array "rebuilding" unless you (or someone with access) triggers such an action -- or drive is bumped and a hot spare is part of the
On 11/15/21 8:12 AM, Klaus Vink Slott wrote: process. And most home users don't have hot spares. Cheers, - Adam