Linuxdoc Linux Questions
Click here to ask our community of linux experts!
Custom Search
Custom Search
Custom Search

Chapter 3. Anatomy of LVM

This diagram gives a overview of the main elements in an LVM system:


+-- Volume Group --------------------------------+
|                                                |
|    +----------------------------------------+  |
| PV | PE |  PE | PE | PE | PE | PE | PE | PE |  |
|    +----------------------------------------+  |
|      .          .          .        .          |
|      .          .          .        .          |
|    +----------------------------------------+  |
| LV | LE |  LE | LE | LE | LE | LE | LE | LE |  |
|    +----------------------------------------+  |
|            .          .        .         .     |
|            .          .        .         .     |
|    +----------------------------------------+  |
| PV | PE |  PE | PE | PE | PE | PE | PE | PE |  |
|    +----------------------------------------+  |
|                                                |
+------------------------------------------------+

         

Another way to look at is this (courtesy of Erik Bågfors on the linux-lvm mailing list):


    hda1   hdc1      (PV:s on partitions or whole disks)                        
       \   /                                                                    
        \ /                                                                     
       diskvg        (VG)                                                       
       /  |  \                                                                  
      /   |   \                                                                 
  usrlv rootlv varlv (LV:s)
    |      |     |                                                              
 ext2  reiserfs  xfs (filesystems)