Create Rescue CD, you may already have one created so just mount this in edit settings#

  • Download rescuecd from http://www.sysresccd.org
  • Load into ISO
  • Startup VM with ISO, in boot options ensure to boot into BIOS, set CD as primary boot device
  • Restart VM and you should see a command line

Resize partitian table#

  • enter or in 64 bit redhat type rescue64 (for keymap)
  • fdisk -l
  • fdisk /dev/sda
  • p (to print)
  • d (to delete)
  • 2 (choose second one)
  • n (to recreate)
  • p (choose primary)
  • 2 (choose second one)
  • enter (to except new size)
  • enter (to accept last one)
  • p (show new size)
  • t (change type)
  • 2 (choose second one)
  • 8e (to change patitian type code)
  • p (to print shows 83 changed to 8e)
  • w (to commit changes)

Scan for new or changed disks#

echo "- - -" > /sys/class/scsi_host/hostX/scan
Where X can be 0, 1, 2....

Resize physical volumne#

  • pvdisplay /dev/sda2 (show old size)
  • pvresize /dev/sda2
  • pvdisplay /dev/sda2 (to show new size)

extend volume group#

  • vgdisplay (show free space available, check "Free PE / Size" for $FreePESize parameter below)

Register Volumes#

  • vgscan
  • vgchange -ay (activate the lvm)

Extend Logical Volume#

  • lvextend -l +$FreePESize /dev/VolGroup00/LogVol00 (the 64 is the param above)
or
  • lvextend -l +$FreePESize /dev/VolGroup/lv_root (the 64 is the param above)

Resize File System#

  • resize2fs /dev/VolGroup00/LogVol00
or
  • resize2fs /dev/VolGroup/lv_root

Wait until this is finished.#

Sync buffer to disk#

  • sync
Now wait 2 minutes for a small increase, or 5 minutes for a large increase.
  • sync

Shutdown VM#

  • shutdown -h now
  • wait for machine to shutdown properly
  • remove rescue cd from machine
  • start machine as normal

If it fails when booting up, then run the fsck and click Y, then run this when OS starts from command line: resize2fs /dev/VolGroup00/LogVol00

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