You may see a different volume size than the one you attached to an instance because of a conflict with device names when restarting the instance. To prevent this, it is highly recommended that you name your ephemeral disks before naming your volumes. We also encourage you to start naming your BSU/ephemeral disks from /dev/xvdb, and your volumes up from /dev/xvdz in order to avoid collisions.
Articles in this section
- How can I use a volume I just attached to an instance?
- What ratio should I keep between volume size and Provisioned IOs?
- How can I avoid disk checking during reboot?
- How can I make my readings/writings (IOPS) faster?
- Is it possible to modify a volume size ?
- I attached a volume to an instance as /dev/xvdb, but I see a different size than the one I chose, and lost data after rebooting. Why?
- I attached a volume to an instance launched with a non-official OMI, but it is not visible. Why?