tldr/pages/linux/mdadm.md

# mdadm

> RAID management utility.
> More information: <https://manned.org/mdadm>.

- Create array:

`mdadm --create {{/dev/md/MyRAID}} --level {{raid_level}} --raid-devices {{number_of_disks}} {{/dev/sdXN}}`

- Stop array:

`mdadm --stop {{/dev/md0}}`

- Mark disk as failed:

`mdadm --fail {{/dev/md0}} {{/dev/sdXN}}`

- Remove disk:

`mdadm --remove {{/dev/md0}} {{/dev/sdXN}}`

- Add disk to array:

`mdadm --assemble {{/dev/md0}} {{/dev/sdXN}}`

- Show RAID info:

`mdadm --detail {{/dev/md0}}`
Fix markdown lint warning for linux man pages 2015-10-22 15:00:05 +08:00			`# mdadm`
mdadm - RAID management utility 2014-08-04 07:31:06 +04:00
Formatted all pages according to guidelines. 2016-01-07 18:31:27 +01:00			`> RAID management utility.`
multiple pages: replace all die.net links (#5528) Most of the links were replaced by manned.org, except when there are more up-to-date sources (like `ifup`) or first-party sources (like `sftp`). 2021-04-16 16:42:14 +02:00			`> More information: <https://manned.org/mdadm>.`
mdadm - RAID management utility 2014-08-04 07:31:06 +04:00
Formatted all pages according to guidelines. 2016-01-07 18:31:27 +01:00			`- Create array:`
mdadm - RAID management utility 2014-08-04 07:31:06 +04:00
multiple pages: Unify file path syntax to indicate a 'path to' (#4816) 2020-10-28 18:19:43 +01:00			`mdadm --create {{/dev/md/MyRAID}} --level {{raid_level}} --raid-devices {{number_of_disks}} {{/dev/sdXN}}`
mdadm - RAID management utility 2014-08-04 07:31:06 +04:00
Formatted all pages according to guidelines. 2016-01-07 18:31:27 +01:00			`- Stop array:`
mdadm - RAID management utility 2014-08-04 07:31:06 +04:00
multiple pages: Unify file path syntax to indicate a 'path to' (#4816) 2020-10-28 18:19:43 +01:00			`mdadm --stop {{/dev/md0}}`
mdadm - RAID management utility 2014-08-04 07:31:06 +04:00
Formatted all pages according to guidelines. 2016-01-07 18:31:27 +01:00			`- Mark disk as failed:`
mdadm - RAID management utility 2014-08-04 07:31:06 +04:00
multiple pages: Unify file path syntax to indicate a 'path to' (#4816) 2020-10-28 18:19:43 +01:00			`mdadm --fail {{/dev/md0}} {{/dev/sdXN}}`
mdadm - RAID management utility 2014-08-04 07:31:06 +04:00
Formatted all pages according to guidelines. 2016-01-07 18:31:27 +01:00			`- Remove disk:`
mdadm - RAID management utility 2014-08-04 07:31:06 +04:00
multiple pages: Unify file path syntax to indicate a 'path to' (#4816) 2020-10-28 18:19:43 +01:00			`mdadm --remove {{/dev/md0}} {{/dev/sdXN}}`
mdadm - RAID management utility 2014-08-04 07:31:06 +04:00
Formatted all pages according to guidelines. 2016-01-07 18:31:27 +01:00			`- Add disk to array:`
mdadm - RAID management utility 2014-08-04 07:31:06 +04:00
multiple pages: Unify file path syntax to indicate a 'path to' (#4816) 2020-10-28 18:19:43 +01:00			`mdadm --assemble {{/dev/md0}} {{/dev/sdXN}}`
mdadm - RAID management utility 2014-08-04 07:31:06 +04:00
Formatted all pages according to guidelines. 2016-01-07 18:31:27 +01:00			`- Show RAID info:`
mdadm - RAID management utility 2014-08-04 07:31:06 +04:00
multiple pages: Unify file path syntax to indicate a 'path to' (#4816) 2020-10-28 18:19:43 +01:00			`mdadm --detail {{/dev/md0}}`