[resize2fs] – Amazon AWS EBS Volume Size Mismatch


Storage !
Image by trodrigues via Flickr

Few days (a month) back I had faced a strange (amateur) problem in Linux with Amazon EBS volume. For some reason I had to increase the volume size say double the size of current volume attached to an instance.

As a normal (not an “advance” user of Linux) I did the following steps:

  • Dismounted the device (EBS Volume) by “umount /dev/sdf“.
  • Logged into AWS console and detached the attached volume from the instance.
  • Took a snapshot of that EBS volume.
  • Created another volume from above created snapshot with double the size of the current volume.
  • Attached the above newly created volume back to the instance.
  • SSH to the instance and mounted the volume (a handy – “mount /dev/sdf/mnt/ebs“).
  • Just curious (being a naive Linuxian), I tried to see the size of the volume by running “df -h”.
  • <<<<<<PANIC>>>>>>
  • It shows the size of the volume as the old one.
  • I confirmed it in the AWS console the size of the new EBS volume is double the size of the original.
  • What the HECK is happening???

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[resize2fs] – Amazon AWS EBS Volume Size Mismatch