LVM Extend Logical Volume and Filesystem

Linux

Extend a Logical Volume and Filesystem

1. Gather Filesystem information for the mount path

   # df -h <mount_path>

2. Gather logical volume "LV", volume group "VG" information, and physical volume "Device" information

   # lvs <filesystem_path> -o +devices,stripes

3. Expand underlying disk

   Follow vendors procedure to expand underlying disk

4. List SCSI device sizes, determine if added space was added to the device

   # lsscsi -s

   1. If space was not automatically added, rescan the SCSI Bus

      # echo '- - - -' > /sys/class/scsi_host/host#/scan

      Note: host# is from the first number in lsscsi -s [2:0:0:0], this would be host2

5. Resize the expanded physical volume

   # pvresize <device>

6. Expand the logical volume and file system
   1. Using all available space

      # lvextend -l +100%FREE -r <logical_volume_path>

   2. Not using all available space

      # lvextend -L +<size>[M|G|T] -r <logical_volume_path>

AIX

Extend a Logical Volume and Filesystem with Disk Expansion

1. Gather logical volume information for the mount path

   # df -g <mount_path>

2. Gather volume group "VOLUME GROUP" information from the logical volume group

   # lslv <logical_volume>

3. Gather physical volume information

   # lsvg -p <volume_group>

4. Expand underlying disk

   Follow vendors procedure to expand underlying disk

5. Examine all the disks in the volume group to see if they have grown in size

   # chvg -g <volume_group>

6. Get the maximum logical partitions "TOTAL PPs" from the volume group

   # lsvg <volume_group>

7. Set the maximum number of logical partitions that can be allocated to the logical volume

   # chlv -x <maximum> <logical_volume>

8. Expand the file system

   # chfs -a size=+<size>[M|G|T] <file_system>