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Date:      Thu, 19 Dec 2013 06:08:18 +0000
From:      "Teske, Devin" <Devin.Teske@fisglobal.com>
To:        Nathan Whitehorn <nwhitehorn@freebsd.org>
Cc:        "svn-src-head@freebsd.org" <svn-src-head@freebsd.org>, "svn-src-all@freebsd.org" <svn-src-all@freebsd.org>, Devin Teske <dteske@FreeBSD.org>, "src-committers@freebsd.org" <src-committers@freebsd.org>, "Teske, Devin" <Devin.Teske@fisglobal.com>
Subject:   Re: svn commit: r259479 - head/usr.sbin/bsdinstall/scripts
Message-ID:  <34980C34-1D4F-458E-8931-8080E0395D8E@fisglobal.com>
In-Reply-To: <52AF78B6.20706@freebsd.org>
References:  <201312161947.rBGJl4Jh087762@svn.freebsd.org> <52AF6FF6.1030909@freebsd.org> <7BF56E5D-CDE7-4E57-BA47-3565CD07236C@fisglobal.com> <A039986D-9C52-42F3-8E64-42B474A484B2@fisglobal.com> <52AF75C1.9040502@freebsd.org> <C908AFBD-A497-4692-88B0-75502119890D@fisglobal.com> <52AF78B6.20706@freebsd.org>

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On Dec 16, 2013, at 2:03 PM, Nathan Whitehorn wrote:

> On 12/16/13 15:55, Teske, Devin wrote:
>> On Dec 16, 2013, at 1:50 PM, Nathan Whitehorn wrote:
>>=20
>>> On 12/16/13 15:48, Teske, Devin wrote:
>>>> On Dec 16, 2013, at 1:40 PM, Teske, Devin wrote:
>>>>=20
>>>>> On Dec 16, 2013, at 1:26 PM, Nathan Whitehorn wrote:
>>>>>=20
>>>>>> On 12/16/13 13:47, Devin Teske wrote:
>>>>>>> Author: dteske
>>>>>>> Date: Mon Dec 16 19:47:04 2013
>>>>>>> New Revision: 259479
>>>>>>> URL: http://svnweb.freebsd.org/changeset/base/259479
>>>>>>>=20
>>>>>>> Log:
>>>>>>>  Add kern.geom.label.disk_ident.enable=3D"0" to loader.conf(5).
>>>>>>>     Discussed on:	-current, -stable
>>>>>>>  MFC after:	3 days
>>>>>>>=20
>>>>>>> Modified:
>>>>>>>  head/usr.sbin/bsdinstall/scripts/zfsboot
>>>>>>>=20
>>>>>>> Modified: head/usr.sbin/bsdinstall/scripts/zfsboot
>>>>>>> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D
>>>>>>> --- head/usr.sbin/bsdinstall/scripts/zfsboot	Mon Dec 16 19:44:45 20=
13	(r259478)
>>>>>>> +++ head/usr.sbin/bsdinstall/scripts/zfsboot	Mon Dec 16 19:47:04 20=
13	(r259479)
>>>>>>> @@ -1159,6 +1159,9 @@ zfs_create_boot()
>>>>>>> 	             $BSDINSTALL_TMPETC/rc.conf.zfs || return $FAILURE
>>>>>>> 	f_eval_catch $funcname echo "$ECHO_APPEND" 'zfs_load=3D\"YES\"' \
>>>>>>> 	             $BSDINSTALL_TMPBOOT/loader.conf.zfs || return $FAILURE
>>>>>>> +	f_eval_catch $funcname echo "$ECHO_APPEND" \
>>>>>>> +	             'kern.geom.label.disk_ident.enable=3D\"0\"' \
>>>>>>> +	             $BSDINSTALL_TMPBOOT/loader.conf.zfs || return $FAILU=
RE
>>>>>>>   	# We're all done unless we should go on for boot pool
>>>>>>> 	[ "$ZFSBOOT_BOOT_POOL" ] || return $SUCCESS
>>>>>> Uh -- what is all of this? Why are we disabling kernel functions dep=
ending on what the root filesystem is? Please don't MFC this.
>>>>> https://urldefense.proofpoint.com/v1/url?u=3Dhttp://lists.freebsd.org=
/pipermail/freebsd-stable/2013-December/076365.html&k=3D%2FbkpAUdJWZuiTILCq=
%2FFnQg%3D%3D%0A&r=3DLTzUWWrRnz2iN3PtHDubWRSAh9itVJ%2BMUcNBCQ4tyeo%3D%0A&m=
=3DWCmXzB4036KuOzNScbJsBQLKdo%2BAo15QWLYq4A7DKis%3D%0A&s=3D4f16f0d6399e3a3c=
5e105a7869c580884327a8721c2f44c1711b319212a23db7
>>>>> https://urldefense.proofpoint.com/v1/url?u=3Dhttp://lists.freebsd.org=
/pipermail/freebsd-stable/2013-December/076471.html&k=3D%2FbkpAUdJWZuiTILCq=
%2FFnQg%3D%3D%0A&r=3DLTzUWWrRnz2iN3PtHDubWRSAh9itVJ%2BMUcNBCQ4tyeo%3D%0A&m=
=3DWCmXzB4036KuOzNScbJsBQLKdo%2BAo15QWLYq4A7DKis%3D%0A&s=3D17882f97e3633c1e=
3ebd45f332e62d2212dc53d1f0577acc4ae15d8234d09c7f
>>>>>=20
>>>>> NB: Happy to rip it out... but want something in-reply to those threa=
ds (pretty please).
>>>> Basically... the logic is...
>>>>=20
>>>> The ZFS pool is built on vdevs of a specific name. The names that are =
used
>>>> should remain the same. Adding this to the loader.conf ensures that th=
e names
>>>> that the pool(s) was/were built upon do not change.
>>>>=20
>>>> This goes beyond just a swap partition I imagine. For example... copyi=
ng the
>>>> data to a new drive using a duplicator. I'm sure there are other cases=
 too.
>>> Thanks for the explanation! I wonder if we should just turn off the dis=
k ident stuff by default globally -- it was causing problems for me as well=
 without ZFS root.
>> As I was making the commit to zfsboot... the very thought had occurred t=
o me.
>>=20
>> I'm happy to rip this out in favor of a new global default. The end-resu=
lt is that
>> what Johan experienced won't be repeated.
>>=20
>> I think there's an urgency to get something to solve this into 10.
>=20
> Yeah, I can see that. Let me bring this up on -CURRENT, with a short time=
out, and see what the options are.

Any updates on this?
--=20
Devin

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