UsrMove feature (was Re: FESCo meeting minutes for 2011-10-24)

MichaƂ Piotrowski mkkp4x4 at gmail.com
Mon Oct 24 20:12:14 UTC 2011


2011/10/24 Miloslav Trmač <mitr at volny.cz>:
> 2011/10/24 Michał Piotrowski <mkkp4x4 at gmail.com>:
>> Hi,
>>
>> 2011/10/24 Chris Adams <cmadams at hiwaay.net>:
>>>>   * Discussion about https://fedoraproject.org/wiki/Features/UsrMove
>>>>     (t8m, 17:26:45)
>>>
>>
>> Cool idea. Next I suggest to stop using
>> /bin
>> /sbin
>> /lib
>> /lib64
>> in F19, and not to create these links on freshly installed systems in F20.
>
> What about
> * the FHS?

Standards can be updated.

> * "#! /bin/sh" in thousands of existing scripts?

Indeed, I forgot about it. Backward compatibility is important.

In any case
#!/usr/bin/env sh
seems to be more portable solution.


>
> If anything, wouldn't it make more sense to move stuff in the opposite
> direction, from /usr/bin to /bin ?  "usr" doesn't really mean anything
> - originally it was used because the filesystem format couldn't
> support more than 64MB(?) in a single volume, so the system had to be
> split to / and /usr.
>
> Also, Fedora already sort-of has a system for stateless OS images -
> see /etc/sysconfig/readonly-root.  What will happen to it?
>
> And more importantly, what is the overall benefit to our users?  I
> can't find anything compelling in the "Benefit to Fedora" section (if
> /usr/ can be snapshotted, why not / ?); AFAICT this requires changing
> 257 packages for mostly aesthetic reasons.
>   Mirek
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-- 
Best regards,
Michal

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