In this video, Kevin Dankwardt describes LVM Volume Groups. He describes how volume groups fit into the LVM abstraction layers. Kevin demonstrates how to use physical volumes and volume group commands to create volume groups.
- [Instructor] Physical volumes can be gathered together…to make a volume group.…You can think of a volume group as an abstraction…of a disk inside, or multiple disks…or maybe multiple partitions.…You create a volume group with the vgcreate command.…In our example here, we're going to create a volume group…we're going to name vg1.…It's not on a system that's participating in clustering…for this volume group so we say -c n for no clustering.…
Then we include the physical volumes…that we want to be in the group.…In this case, sdb1 and sdc1.…If we want to grow our volume group,…we use the vgextend command…and we list what we want to add to it.…In this case, the partition sdd1,…which we previously made a physical volume.…If we want to remove a physical volume we use vgreduce.…If we're no longer going to use a volume group…we use the vgremove command and the name…of the volume group we want to get rid of.…
So let's look at creating a volume group…and extending it and reducing it and removing it.…So I've made three partitions…
- Partitioning storage
- Creating, mounting, and unmounting file systems
- Formatting file systems
- Making volumes with LVM
- Adding storage security
- Managing swap spaces
- Backing up and recovering Linux storage systems
- Working with networked file systems like NFS and SSHFS
Skill Level Intermediate
Linux: Bash Shell and Scriptswith Kevin Dankwardt2h 46m Intermediate
Linux: Multitasking at the Command Linewith Scott Simpson39m 1s Intermediate
1. Disk Partitions, Formatting, and Mounting
2. Logical Volume Manager (LVM)
3. Security and Resource Constraints
4. Special Storage Features and Considerations
5. Networked File Systems
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