红帽全球峰会16.18. Creating advanced RAID devices
In some cases, you might want to install the operating system on an array that is created before the installation completes. Usually, this means setting up the /boot or root file system arrays on a complex RAID device. In such cases, you might need to use array options that are not supported by the Anaconda installer. To work around this, perform the following steps.
注意
The limited Rescue Mode of the installer does not include man pages. Both the mdadm(8) and md(4) man pages contain useful information for creating custom RAID arrays, and might be needed throughout the workaround.
Procedure
- Insert the install disk.
-
During the initial boot up, select Rescue Mode instead of Install or Upgrade. When the system fully boots into
Rescue mode, you can see the command line terminal. From this terminal, execute the following commands:
-
Create RAID partitions on the target hard drives by using the
partedcommand. -
Manually create raid arrays by using the
mdadmcommand from those partitions using any and all settings and options available.
-
Create RAID partitions on the target hard drives by using the
- Optional: After creating arrays, create file systems on the arrays as well.
- Reboot the computer and select Install or Upgrade to install. As the Anaconda installer searches the disks in the system, it finds the pre-existing RAID devices.
- When asked about how to use the disks in the system, select Custom Layout and click . In the device listing, the pre-existing MD RAID devices are listed.
- Select a RAID device and click .
- Configure its mount point and optionally the type of file system it should use if you did not create one earlier, and then click . Anaconda installs to this pre-existing RAID device, preserving the custom options you selected when you created it in Rescue Mode.
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