Overview of EVS Disk Management Using LVM
LVM is short for Logical Volume Manager, which is a mechanism used for managing disk partitions in Linux.
The process of managing EVS disks using LVM is as follows:
- Create physical volumes using EVS disks.
- Create a volume group for the physical volumes.
- Create logical volumes in the volume group.
- Create file systems on logical volumes.
With LVM, a file system can be created on top of multiple EVS disks and can be easily resized as needed. This way, the file system size is no longer limited by the underlying disk capacity.
For example, you can expand the size of the ext4 file system in Figure 1 in either of the following ways:
- Extend the logical volume directly if the unallocated space in the volume group is sufficient.
- Extend the volume group and then logical volumes if the unallocated space in a volume group is insufficient.
Glossary
- Physical Volume
Physical volumes are basic storage devices in LVM and are created based on EVS disks and LVM management parameters.
- Volume Group
A volume group concatenates physical volumes into a large storage pool that can be consecutively addressed.
- Logical Volume
Logical volumes are obtained by partitioning the volume group according to the logic.
Feedback
Was this page helpful?
Provide feedbackThank you very much for your feedback. We will continue working to improve the documentation.See the reply and handling status in My Cloud VOC.
For any further questions, feel free to contact us through the chatbot.
Chatbot