OK, new plan! After several reboots the array resyncs with about 120 MB/s, but it stops with “recovery interrupted” at about 40%. I have no idea how to fix this, so I’m gonna rebuild the array from scratch.
I ordered 3 new HGST 4 TB drives, hopefully delivered by tomorrow (2017/08/09). The Plan:
- Build a striped LVM device over 2 new drives. That should be enough to save all data.
- Rsync everything to the LVM device
- Replace the failing Seagate drive and rebuild the Array from scratch
- Rsync the data back to the RAID array and maybe replace the last remaining Seagate drive