Sunday, November 28, 2010

Resizing an EBS volume


If you run into size limitations with an EBS (Elastic block storage) volume attached to your EC2 instance it just takes a few minutes to expand the storage space.

  • Unmount the small volume (assumed to be /dev/sda here).
unmount /dev/sda
  • Detach the unmounted partition from the instance.
  • Take a snapshot of the detached volume.
  • Recreate an EBS partition from the snapshot.
  • Attach the EBS disk to your instance.
  • Resize and remount the larger volume with:
e2fsck -f /dev/sda
resize2fs -p /dev/sda
e2fsck -f /dev/sda
tune2fs -l /dev/sda
mount /dev/sda /somewhere

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