Re: fragile Live Fedora ? Device-mapper Snapshot vs. Layered Fs solution (AUFS or Overlayfs)

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On Thu, Jul 30, 2015 at 11:24 AM, Chris Murphy <lists@xxxxxxxxxxxxxxxxx> wrote:
> Could be this:
> https://bugzilla.redhat.com/show_bug.cgi?id=1220950
>
> However I don't see the same snapshot message in that bug, that you get.
>

No, it's different.

This bug is as easy to reproduce: run Fedora 22 Live Mode on laptop or VM,
it boots default into liveuser, try a `sudo dnf install 'Development
Tools'` then kernel crash,
from console I collected the dm-0 IO Errors.

This is always reproducible that makes me think Fedora Live Mode is
not usable at all, or maybe no users at all.

On Thu, Jul 30, 2015 at 11:28 AM, Chris Murphy <lists@xxxxxxxxxxxxxxxxx> wrote:
>
> Also, overlayfs is really recently added to the kernel. It's much much
> newer than device mapper stuff. So I wouldn't call it immature. You
> might be thinking of the thin provisioning snapshots which is much
> newer, but still has been around longer than overlayfs. But I don't
> think the live media is using thin snapshots (?) I think they're the
> conventional (thick) type.

The fact is with overlayfs (or aufs from 2014 Ubuntu release) Live
Linux you can apt-get install whatever (write to /) as much data as
possible; till it becomes full and returns -ENOSPACE (and continues
usable if clean some data), on this Fedora Live OS with device-mapper
and simple sudo dnf install a few packages crashes kernel. Which is
more mature?

Maybe this is not the right place to complain or file a bug, could you
tell where is a better place to draw attention from developers behind
Fedora Live?

>
>
> Chris Murphy


Thanks,
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