{"id":113,"date":"2019-05-06T11:29:37","date_gmt":"2019-05-06T16:29:37","guid":{"rendered":"https:\/\/tech.my-netsol.com\/?p=113"},"modified":"2019-05-06T11:29:37","modified_gmt":"2019-05-06T16:29:37","slug":"how-to-extend-reduce-lvms-logical-volume-management-in-linux-part-ii","status":"publish","type":"post","link":"https:\/\/tech.my-netsol.com\/?p=113","title":{"rendered":"How to Extend\/Reduce LVM\u2019s (Logical Volume Management) in Linux \u2013 Part II"},"content":{"rendered":"\n

From TecMint.com – https:\/\/www.tecmint.com\/extend-and-reduce-lvms-in-linux\/<\/p>\n\n\n\n

Previously we have seen how to create a flexible disk storage using LVM. Here, we are going to see how to extend volume group, extend and reduce a logical volume. Here we can reduce or extend the partitions in Logical volume management (LVM) also called as flexible volume file-system.<\/p>\n\n\n\n

\"Extend\/Reduce<\/a><\/figure>\n\n\n\n

Extend\/Reduce LVMs in Linux<\/p>\n\n\n\n

Requirements<\/h4>\n\n\n\n
  1. Create Flexible Disk Storage with LVM \u2013 Part I<\/a><\/li><\/ol>\n\n\n\n
    When do we need to reduce volume?<\/h5>\n\n\n\n

    May be we need to create a separate partition for any other use or we\n need to expand the size of any low space partition, if so we can reduce\n the large size partition and we can expand the low space partition very\n easily by the following simple easy steps.<\/p>\n\n\n\n

    My Server Setup \u2013 Requirements<\/h5>\n\n\n\n
    1. Operating System \u2013 CentOS 6.5 with LVM Installation<\/li>
    2. Server IP \u2013 192.168.0.200<\/li><\/ol>\n\n\n\n

      How to Extend Volume Group and Reduce Logical Volume<\/h3>\n\n\n\n

      Logical Volume Extending<\/h4>\n\n\n\n

      Currently, we have One PV, VG and 2 LV. Let\u2019s list them one by one using following commands.<\/p>\n\n\n\n

      # pvs\n# vgs\n# lvs<\/pre>\n\n\n\n
      \"Logical<\/a><\/figure>\n\n\n\n
      Logical Volume Extending<\/p>\n\n\n\n
      There are no free space available in Physical Volume and Volume \ngroup. So, now we can\u2019t extend the lvm size, for extending we need to \nadd one physical volume (PV<\/strong>), and then we have to extend the volume group by extending the vg<\/strong>. We will get enough space to extend the Logical volume size. So first we are going to add one physical volume.<\/p>\n\n\n\n