Re: Is not btrfs about to replace our main live tools like squashfs, lzma, aufs, ... ?

[tomas@tuxteam.de]

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On Fri, Nov 12, 2010 at 08:51:02PM +0000, Philippe Lelédy wrote:
>  As CD-ROM are becoming legacy and USB ubiquitous, it is possible to think 
> about live systems without  the focus on there beeing  Read-0nly OSs.

[...]
> I start thinking that btrfs can be used to offer these features with 
> increased flexibility over our usual tools.

Good points overall, but as you state yourself:

> Now the main concern for me starting using this scheme is the effect of a 
> journaling FS on the lifetime on a cheap USB flash disk [...]

there are cases where the current scheme of things (read-only base plus
overlay living on another medium) is superior. Not "btrfs instead of
layering", but "btrfs alternative to layering" or even better "all of
them".

So I think the trick would be to find an abstract layer of "live" which
could be based on multiple underlying mechanisms (snapshotting
filesystem, layering, ...).

What do you think?

- -- tomás
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