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Re: file systems



On Thu, Apr 21, 2011 at 9:44 PM, prad <prad@towardsfreedom.com> wrote:
Chris Brennan <xaero@xaerolimit.net> writes:

> CDDL isn't a BSD Licence, it's the licence that's used by what was Sun
> Microsystems and is now Oracle.
>
sorry my mistake for thinking zfs was bsd (even after you said it was
cddl)! i was confusing it with the fact that you can use zfs via
freebsd). thx for the correction.

i looked it up and the key point for me is that
"The Free Software Foundation considers it a free software license that
is incompatible with the GNU General Public License (GPL)."
http://en.wikipedia.org/wiki/Common_Development_and_Distribution_License

> The BSD Licence and GNU can co-exists quite
> well and have for a very long time.
>
i'd forgotten this largely i think due to some of the hostility
demonstrated on the excellent freebsd mailist towards gpl (a few years
ago).

i guess this is also why you can actually have debian/freebsd then.
furthermore, we bridge the incompatibilities perhaps:

zfs --> cddl||bsd --> bsd||gpl --> debian(gpl)/freebsd(bsd)

i'm not up on the licensing protocols so i'm just guessing here.

No worries, couldn't hurt to read up on CDDL[1], *BSD[2] Licences and GNU/GPL[3]. As for your general Filesystem needs, XFS or XFS-LVM is probably the smart way to go. 

You mentioned something about doing this on USB (solid-state?) storage? You might want to also consider reading up on USB's general policy about write few, read many. In a nutshell, most USB devices don't like to be written to many many times (such as a busy *primary* FS). They have a limited shelf-life of writes )wear leveling) before they go bad (I have an OCZ ATV rubber thumb drive that has suffered this.) This is why they tell you defragmenting SSD's is a *VERY* bad idea, you significantly reduce the write ability of the device.[4][5][6]

[1] http://en.wikipedia.org/wiki/Common_Development_and_Distribution_License
[2] http://en.wikipedia.org/wiki/BSD_licenses
[3] http://en.wikipedia.org/wiki/GNU_General_Public_License
[4] http://en.wikipedia.org/wiki/USB_flash_drive#Advantages_and_disadvantages
[5] http://www.bress.net/blog/archives/114-How-Long-Does-a-Flash-Drive-Last.html
[6] http://www.corsairmemory.com/_faq/FAQ_flash_drive_wear_leveling.pdf


-- 
> A: Yes. > >Q: Are you sure? > >>A: Because it reverses the logical flow of conversation. 
> >>>Q: Why is top posting frowned upon? 

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