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🌻Infrastructure And OperationsRathouse

rathouse is for capsulv2

SSD serial numbers

frontplate number | SSD serial number
0                 | 19431D801189
1                 | 22062712800355
2                 | PHYF209106Y93P8EGN
3                 | PHYF209300LX3P8EGN

use smartctl -x /dev/sdb | grep Serial to print serial numbers.

mdadm recovery

if a disk is pulled from a running system, mdadm assumes the worst & disconnects it from the RAID permanently.

If the system had a way of knowing that the removal and restoration was intentional, it could automatically pick it up. But a software RAID has no such knowledge, so it assumes the worst and acts as if the disk or its connection has become unreliable for some reason, until told otherwise.

to re-attach a disconnected disk, do this:

mdadm --manage /dev/md0 --add /dev/<disk><partition>

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