On Mon, 5 Oct 2020 14:10:25 +0100 Daniel Sanabria <sanabria.d@xxxxxxxxx> wrote: > Hi all, > > Scrubbing ( # echo check > > /sys/devices/virtual/block/md1/md/sync_action) is killing my array :( > > I'm attaching details of the array and disks (bloody wd greens) as > well as journalctl errors providing some details about the issue. > > If you have any pointers on what might be the cause of this as well as > any recommendations on how to improve things please let me thank you > in advance ... > > I have backups of the data so happy to move this to a different setup > you might recommend (apps will be mostly reading from the array via > NFS since most of the content will be media). > > My suspicion is that a timer service is kicking in and disrupting the > scrubbing somehow but can't pinpoint what causes this. It looks like a drive is dropping off the bus and then failing to reidentify, could be bad cabling/controller/PSU, or just a bad drive. You should post "smartctl -a" of all drives as well. -- With respect, Roman