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Mdadm - quick command reference

Julian
see https://dev.to/c33s/comment/3eck
・1 min read
# show sync status
cat /sys/block/md0/md/sync_action

# show sync progress
cat /proc/mdstat

# show details
mdadm --detail /dev/md0

# mark faulty
mdadm /dev/md0 -f /dev/sdc1

# remove drive
mdadm /dev/md0 -r /dev/sdc1

# readd drive
mdadm /dev/md0 -a /dev/sdc1
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