Unix & Linux Stack Exchange is a question and answer site for users of Linux, FreeBSD and other Un*x-like operating systems. Join them; it only takes a minute:

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I'm building fedora live images and they use dm-snapshot to make root read-write. The problem I've noticed with this is that either the space allocated for the snapshot is inadequate, or it is generally unstable. My snapshot device is 1048576 512-byte or 512MB. I've used aufs in the past for both a router and desktop and I can generally keep my usage below 512MB.

I'm unable to tell exactly what is consuming all this space, I'm guessing that is the drawback to dm snapshot. Once my system blows past 512MB, it is no longer usable.

Does anyone else have this issue with Fedora livecds or usb keys?

I think my next best option is to make use of aufs, hopefully without needing to write a dracut module or hook.

share|improve this question

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.