I have 4 raid6 devices on my server /dev/md0, /dev/md1,/dev/md2 and /dev/md3 each having 9 hdd. I accidently removed /dev/sda1 without removing it from raid md1. When I re-inserted it, raid md1 is not adding /dev/sda1 back, md1 shows it as failed Mdadm --manage --add doesn't work. Is there any way to add it back to md1 without system reboot and without loosing data on md1 Also I have lvm configured on md1. But now pvs, vgs and lvs command not showing the pv, volume group and lv created on md1
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