[root@szm test]# mdadm --help-options

Any parameter that does not start with '-' is treated as a device name

or, for --examine-bitmap, a file name.

The first such name is often the name of an md device.  Subsequent

names are often names of component devices.

 

Some common options are:

  --help        -h   : General help message or, after above option,

                       mode specific help message

  --help-options     : This help message

  --version     -V   : Print version information for mdadm

  --verbose     -v   : Be more verbose about what is happening

  --quiet       -q   : Don't print un-necessary messages

  --brief       -b   : Be less verbose, more brief

  --export      -Y   : With --detail, use key=value format for easy

                       import into environment

  --force       -f   : Override normal checks and be more forceful

 

  --assemble    -A   : Assemble an array----组建一个已经存在的阵列

  --build       -B   : Build an array without metadata

  --create      -C   : Create a new array

  --detail      -D   : Display details of an array

  --examine     -E   : Examine superblock on an array component

  --examine-bitmap -X: Display the detail of a bitmap file

  --monitor     -F   : monitor (follow) some arrays

  --grow        -G   : resize/ reshape and array---调整阵列大小

  --incremental -I   : add/remove a single device to/from an array as appropriate

  --query       -Q   : Display general information about how a

                       device relates to the md driver

  --auto-detect      : Start arrays auto-detected by the kernel

  --offroot          : Set first character of argv[0] to @ to indicate the

                       application was launched from initrd/initramfs and

                       should not be shutdown by systemd as part of the

                       regular shutdown process.

-f：强制执行一个操作

s：扫描已激活阵列的扩展信息

x：指定热备磁盘的个数

l：指定阵列级别

-a：创建阵列的时候按用户回答的 命令执行相关操作