![]() So as you can see with just /, /home, /opt and /var we have already exceeded 4 partitions with 4 file systems and 1 swap resource. In addition to the above at least one partition is required as a swap resource (part of the virtual memory model - similar to a Pagefile in Windows) and business data might also be isolated in separate file systems.Įach file system and swap resource will exist on a separate partition or logical volume For example it is common for the following pathnames to be mount points for separate file systems: Linux systems adopt this traditional UNIX convention too. This is a little bit like having separate mapped drives for separate file systems in a Windows based system. Traditional UNIX systems frequently separated key subsets of Operating System files and directories into different file systems, which can then be mounted on to empty directories in a parent file system (often the root file system which is the core Operating System file system and is mounted on /). Where an entire disk is used for a file system or swap resource a single Primary Partition would be created. ![]() An Extended Partition can be logically partitioned further into Logical Partitions and this caters for scenarios that require more than 4 partitions from one disk. Under MBR constraints PC systems can have a maximum of four physical partitions on a disk, configured as up to 4 primary partitions or up to 3 Primary Partitions and 1 Extended Partition. The Linux Logical Volume Manager (LVM) provides software support for concatenated, striped and mirrored logical volumes similar to those offered by hardware RAID solutions.Īs Linux is installed on PC based systems it has in the past been constrained slightly by the Master Boot Record (MBR) interface supported by motherboards. Linux supports direct raw disk usage and Logical Volume Management to facilitate file system and swap resources. This article covers the partitioning of physical disks in a Linux Server ready for use as raw partitions for file systems and swap devices, or ready to be used to create Logical Volumes under the control of the Linux Logical Volume manager (LVM).
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