Date: Fri, 09 Apr 2010 10:42:18 +0000 From: Paul Wootton <paul@fletchermoorland.co.uk> To: =?UTF-8?B?RGFnLUVybGluZyBTbcO4cmdyYXY=?= <des@des.no> Cc: Bruce Cran <bruce@cran.org.uk>, freebsd-geom@freebsd.org, Alexander Leidinger <Alexander@leidinger.net>, Teske <dteske@vicor.com>, Randi Harper <randi@freebsd.org>, freebsd-current@freebsd.org, "Andrey V. Elsukov" <bu7cher@yandex.ru>, Garrett Cooper <yanefbsd@gmail.com> Subject: Re: [RFC] Rewriting sade(8) Message-ID: <4BBF048A.407@fletchermoorland.co.uk> In-Reply-To: <86fx356ku1.fsf@ds4.des.no> References: <55861270658151@web135.yandex.ru> <20100408103809.13496s9i6ny03ocg@webmail.leidinger.net> <867hoi8gbl.fsf@ds4.des.no> <201004080849.12151.jhb@freebsd.org> <86r5mqt4aj.fsf@ds4.des.no> <u2w7d6fde3d1004081103o62126620t7d1ea811255c8d66@mail.gmail.com> <86sk75ol54.fsf@ds4.des.no> <i2h7d6fde3d1004081231vfa329175kaefc50cb82e0ab06@mail.gmail.com> <86fx356ku1.fsf@ds4.des.no>
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Dag-Erling Smørgrav wrote:
> Garrett Cooper <yanefbsd@gmail.com> writes:
>
>> Dag-Erling Smørgrav <des@des.no> writes:
>>
>>> Garrett Cooper <yanefbsd@gmail.com> writes:
>>>
>>>> Dag-Erling Smørgrav <des@des.no> writes:
>>>>
>>>>> [restored relevant context which was removed earlier in the thread]
>>>>> ...which is exactly what I said - but in the sysinstall case, you may
>>>>> want to ask some additional questions ("are you sure you want to proceed
>>>>> without a swap partition?") or place some additional constraints (such
>>>>> as "don't allow the user to mount something on top of /mnt or /rescue"),
>>>>> and sysinstall needs to know the outcome.
>>>>>
>>>> If the user shoots him or herself in the foot, that's their own
>>>> problem.
>>>>
>>> That kind of attitude is why people choose Linux over FreeBSD...
>>>
>> Where do you draw the line though? /media, /libexec, /proc, /sys, etc?
>> I think it's better to educate users than build in more complexity to
>> the install application.
>>
>
> I draw the line at mounting something - anything - on top of directories
> that contain files that are critical to sysinstall's operation. IIRC,
> /mnt is where the installation CD is mounted.
>
> In sysinstall mode, sade's role is to 1) make sure that something
> sensible is mounted in the location where sysinstall is going to install
> the OS, 2) assist the user in making the correct disk, slice, partition
> or what-have-you bootable, 3) within reasonable limits, prevent the user
> from doing something that will break sysinstall, and 4) optionally allow
> the user to prepare additional filesystems that sysinstall doesn't care
> about (e.g. /usr/obj), as long as this does not conflict with 3).
>
> I think the easiest way to achieve this is for sysinstall to provide an
> empty directory (e.g. /inst) and have sade operate with that directory
> as root, so what the user sees is how things will look when the system
> reboots after installation; when the user asks sade to create /usr/obj,
> sade actually creates /inst/usr/obj.
>
> Last but not least, sade should report what it did to sysinstall -
> perhaps in fstab format, since sysinstall needs to populate
> (/inst)/etc/fstab anyway.
>
> DES
>
But... If this is a fresh install, then you really have not lost
anything if you making a mistake. If sysinstall / sade is run from a
running system and a mistake is made then you could loose your data, but
as you will need to have su-ed up, how does this differ from typing a
wrong command in?
Just my 2 cents
Paul
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