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Date:      Mon, 5 Jan 2015 20:11:27 -0800
From:      Kevin Oberman <rkoberman@gmail.com>
To:        Warren Block <wblock@wonkity.com>
Cc:        FreeBSD-STABLE Mailing List <freebsd-stable@freebsd.org>, Chris H <chrish@ultimatedns.net>
Subject:   Re: I need some swap partion help on new 10.1 install
Message-ID:  <CAN6yY1tqs4cNN36Nu6%2BaA5adMOnGVgCLpF7xbqTKcSuXhRbzQw@mail.gmail.com>
In-Reply-To: <alpine.BSF.2.11.1501051957390.30334@wonkity.com>
References:  <20150102144223.14a2987e@nunki.holyordnance.org> <20150102215604.GF867@rancor.immure.com> <20150102145801.6ea92658@nunki.holyordnance.org> <6b9041859ceb265eedaf6f56f9178a7b@ultimatedns.net> <20150102163539.1eaadbc7@nunki.holyordnance.org> <20150103172527.GI867@rancor.immure.com> <745af5f28074a940e743f6094be15991@ultimatedns.net> <CAN6yY1tAZfp-nDqhYrd63hcxA%2BBKayF3FypOeNvk5cY3e125sg@mail.gmail.com> <54A88D7B.8010901@protected-networks.net> <alpine.BSF.2.11.1501041836540.33242@wonkity.com> <20150105225028.GC57206@rancor.immure.com> <alpine.BSF.2.11.1501051957390.30334@wonkity.com>

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On Mon, Jan 5, 2015 at 7:04 PM, Warren Block <wblock@wonkity.com> wrote:

> On Mon, 5 Jan 2015, Bob Willcox wrote:
>
>  On Sun, Jan 04, 2015 at 06:37:18PM -0700, Warren Block wrote:
>>
>>> On Sat, 3 Jan 2015, Michael Butler wrote:
>>>
>>>  On 01/03/15 19:35, Kevin Oberman wrote:
>>>>
>>>> [ .. snip .. ]
>>>>
>>>>  As per an earlier suggestion, did you put:
>>>>>  kern.geom.label.gpt.enable=0
>>>>> into /boot/loader.conf? If so, that's why you lack a /dev/gpt label.
>>>>> This
>>>>> is usually a "friendlier" string than the diskid, but both work equally
>>>>> well.
>>>>>
>>>>
>>>> bsdinstall does that on its own - you have to manually
>>>> remove/comment/set to "1" after installation :-(
>>>>
>>>
>>> gpt, or gptid?  The first would be a terrible regression, the second,
>>> not so much.
>>>
>>
>> The more I read of this thread the more confused I get. What should I
>> have in
>> /boot/loader.conf to get the old behavior with more traditional device
>> names?
>>
>> Also, if bsdinstall doesn't do this for me automatically, why did it put
>> /dev/ada0p2 in the fstab for swap?
>>
>
> The best way is to use GPT labels, which are stored in the GPT header.
> They are portable, so keep working if the drive device name changes (ada0
> to da1, say).
>
> GPT labels can be set with gpart modify.  The labels appear in /dev/gpt/.
> As mentioned before, they might not appear if a partition is mounted due to
> GEOM "withering".
>
> GPT labels are enabled by default.  If bsdinstall is disabling them, it is
> a regression.
>
> GPT IDs, on the other hand, are a unique generated ID code that can appear
> at the same time.  Many of us find them not very useful and disable them in
> loader.conf.
>
> I have only upgraded systems to 10.1, so don't know what bsdinstall does
> on a new install.
>

Just checked head and bsdinstall does not disable GPT labels. It does
disable gptid labels (which IMHO is a good thing).
--
R. Kevin Oberman, Network Engineer, Retired
E-mail: rkoberman@gmail.com



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