Create a RAID5 of 10G free space

1. Create four new partitions:

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2 , view partition file system with L, change with T, set to FD

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3 , save repartitioning

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4 , create Raid

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mdadm to create a command,-C creates a device file that automatically creates a target RAID device (yes), and-N 3 uses three blocks to create Raid,-x 1 to leave a free disk-L 5 level 5 (RAID-5),-C to specify the chunk size

5 , see if it is successful

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6 , Format raid

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7 , mount to the specified directory (this directory is to be built first)

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8 , see if the disk is formatted successfully

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9 , set up automatic mount, It's best to hang the UUID, because md0 may change.

Blkid/dev/md0

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vim/etc/ FS Tab

Ten , see if it works properly : mdadm-d/dev/md0 , the following result is normal

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One , test mark Sda7 as damaged

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View status: Watch-n1 ' Cat/proc/mdstat ' means to automatically invoke the command behind cat every second

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A , the result is identified as sda7 as faulty , for damage, while the SDA10 free disk automatically tops and updates the data synchronously

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- , remove the bad disk:

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Up to two blocks (fewer disks are degraded, less in descending)

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- , add disk operation: The disc has been repaired, or a new one has been replaced (the bottom Sda7 in a repair operation, it will be perfectly normal after a while)

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Create a RAID5 of 10G free space