snippetbashTip
mdadm — RAID management utility. More information: <https://manned.org/mdadm>.
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managementcommandcliinformationraidmdadmmoreutility
linux
Problem
How to use the
mdadm command: RAID management utility. More information: <https://manned.org/mdadm>.Solution
mdadm — RAID management utility. More information: <https://manned.org/mdadm>.Create array:
sudo mdadm --create {{/dev/md/MyRAID}} --level {{raid_level}} --raid-devices {{number_of_disks}} {{/dev/sdXN}}Stop array:
sudo mdadm --stop {{/dev/md0}}Mark disk as failed:
sudo mdadm --fail {{/dev/md0}} {{/dev/sdXN}}Remove disk:
sudo mdadm --remove {{/dev/md0}} {{/dev/sdXN}}Add disk to array:
sudo mdadm --assemble {{/dev/md0}} {{/dev/sdXN}}Show RAID info:
sudo mdadm --detail {{/dev/md0}}Reset disk by deleting RAID metadata:
sudo mdadm --zero-superblock {{/dev/sdXN}}Code Snippets
Create array
sudo mdadm --create {{/dev/md/MyRAID}} --level {{raid_level}} --raid-devices {{number_of_disks}} {{/dev/sdXN}}Stop array
sudo mdadm --stop {{/dev/md0}}Mark disk as failed
sudo mdadm --fail {{/dev/md0}} {{/dev/sdXN}}Remove disk
sudo mdadm --remove {{/dev/md0}} {{/dev/sdXN}}Add disk to array
sudo mdadm --assemble {{/dev/md0}} {{/dev/sdXN}}Context
tldr-pages: linux/mdadm
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