Linux command
mdadm 命令
安全
权限或系统影响较大，执行前请核对目标。
常用示例
Create
sudo mdadm --create /dev/md/MyRAID --level raid1 --raid-devices 2 /dev/sda1 /dev/sdb1
Stop
sudo mdadm --stop /dev/md0
Example
sudo mdadm --fail /dev/md0 /dev/sda1
Remove
sudo mdadm --remove /dev/md0 /dev/sda1
Add
sudo mdadm --assemble /dev/md0 /dev/sdc1
Example
sudo mdadm --detail /dev/md0
Clear
sudo mdadm --zero-superblock /dev/sda1
说明
mdadm manages Linux software RAID arrays (md devices). It can create, assemble, monitor, grow, and manage arrays of various RAID levels including RAID 0, 1, 5, 6, and 10.
参数
- --create _device_
- Create a new array
- --assemble _device_
- Assemble a previously created array
- --stop _device_
- Stop an active array
- --detail _device_
- Display detailed information about an array
- --examine _device_
- Examine RAID superblock on a component device
- --fail _device_ _component_
- Mark a component as failed
- --remove _device_ _component_
- Remove a component from an array
- --add _device_ _component_
- Add a component to an array
- --level _level_
- RAID level (0, 1, 5, 6, 10, linear)
- --raid-devices _n_
- Number of active devices in array
- --zero-superblock _device_
- Erase RAID superblock from a device
FAQ
What is the mdadm command used for?
mdadm manages Linux software RAID arrays (md devices). It can create, assemble, monitor, grow, and manage arrays of various RAID levels including RAID 0, 1, 5, 6, and 10.
How do I run a basic mdadm example?
Run `sudo mdadm --create /dev/md/MyRAID --level raid1 --raid-devices 2 /dev/sda1 /dev/sdb1` in a terminal, then adjust file names, paths, flags, or remote targets for your system.
What does --create _device_ do in mdadm?
Create a new array