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2.2. Partitioning the Disk
Red Hat recommends creating separate partitions for the
/var/tmp/directories. The reasons for each are different, and we will address each partition.
- This partition is the first partition that is read by the system during boot up. The boot loader and kernel images that are used to boot your system into Red Hat Enterprise Linux 7 are stored in this partition. This partition should not be encrypted. If this partition is included in / and that partition is encrypted or otherwise becomes unavailable then your system will not be able to boot.
- When user data (
/home) is stored in
/instead of in a separate partition, the partition can fill up causing the operating system to become unstable. Also, when upgrading your system to the next version of Red Hat Enterprise Linux 7 it is a lot easier when you can keep your data in the
/homepartition as it will not be overwritten during installation. If the root partition (
/) becomes corrupt your data could be lost forever. By using a separate partition there is slightly more protection against data loss. You can also target this partition for frequent backups.
- Both the
/var/tmp/directories are used to store data that does not need to be stored for a long period of time. However, if a lot of data floods one of these directories it can consume all of your storage space. If this happens and these directories are stored within
/then your system could become unstable and crash. For this reason, moving these directories into their own partitions is a good idea.
During the installation process, you have an option to encrypt partitions. You must supply a passphrase. This passphrase serves as a key to unlock the bulk encryption key, which is used to secure the partition's data. For more information, see Section 4.9.1, “Using LUKS Disk Encryption”.